《三元延壽參贊書》

The Book of Prolonging Life through the Three Primordial Energies, Volume One, was compiled by Elder Chengxin of Jiuhua Mountain, Li Pengfei. It primarily discusses the relationship between the human body and the natural world.

Among all beings between heaven and earth, humans are the most precious. Yet people often remain confined by their physical forms, unaware of their own intrinsic value. The human head is round, symbolizing heaven, while the feet are square, representing earth. The eyes resemble the sun and moon; hair, flesh, blood, and bones are akin to mountains, forests, soil, and stones. Breathing is like the wind, exhalation like dew. Joy resembles auspicious stars and clouds, while anger is akin to thunder and lightning. The flow of blood nourishing the body mirrors the surging rivers, lakes, and seas. Furthermore, the four limbs correspond to the four seasons, the five organs (zang) align with the Five Phases (Wood, Fire, Earth, Metal, Water), and the six hollow organs (fu) resonate with the six musical tones. This demonstrates that our bodies are interconnected with the natural order of heaven and earth—how could they not be precious?

According to Buddhist scriptures, the development of a fetus unfolds as follows: When the parents' essence (Jing) and blood unite, the karmic consciousness enters the womb, and the four great elements (earth, water, fire, wind) gradually coalesce through dependent origination. The specific stages of development are: In the first week, the embryo resembles a lotus root; in the second, it takes the form of thick curds; in the third, it appears like shoes or socks; and in the fourth, it is akin to a warm stone. By the fifth week, a wind called Sheti stirs the embryo, initiating the rudiments of the head and limbs. In the sixth and seventh weeks, the rotating wind shapes the limbs, and by the seventh and eighth weeks, fingers and toes fully form. In the ninth week, the eyes, ears, nose, mouth, and excretory organs take shape, and in the tenth week, the Pumen wind solidifies the body and generates the five organs.

Subsequent weeks bring further development: In the eleventh week, the breath pathways open; in the twelfth, the large and small intestines form; in the thirteenth, the fetus begins to perceive hunger and thirst (absorbing nutrients through the umbilical cord); in the fourteenth, a hundred vessels emerge along the front, back, left, and right of the body; and in the fifteenth, twenty additional vessels develop, totaling eight hundred breath channels throughout the body. In the sixteenth week, the sweet dew wind enables the eyes to see; in the seventeenth, the hair-brushing wind clears the orifices of the five senses; and in the eighteenth, the stainless wind purifies the six roots (eyes, ears, nose, tongue, body, and mind). By the nineteenth week, the functions of the eyes, nose, and tongue are complete, and the fetus attains the three karmic rewards of body, life, and mind. Finally, in the twentieth week, the firm wind fully forms the bones of the limbs, completing the growth of over two hundred large and small bones in the body.

This scripture describes the thirty-eight seven-day cycles (approximately 266 days) of fetal development in the womb, emphasizing the preciousness of human form. Each week brings distinct transformations: muscles and blood vessels develop first (days 21-23), followed by the gradual formation of skin and hair (days 24-28). By the 35th day, limbs become fully developed, and on the 38th day, the "Blue Flower Wind" guides the fetus into the head-down birth position. The text particularly highlights how every part of the human body has its presiding spirit—deities safeguard the five viscera and six bowels, tendons and bones, blood vessels, even down to individual pores—demonstrating how rare and valuable human incarnation truly is.

Among the Five Blessings (longevity, wealth, health, virtue, and peaceful death), longevity is ranked foremost. The text asserts that worldly achievements like wealth and fame only become possible after obtaining a healthy body. It specifically criticizes those who disregard their physical form, equating disrespect for one's body with disrespect toward parents (since our flesh and hair are gifts from them). Regarding infant mortality, the scripture attributes it to parental negligence: possible causes include parental Yin-Yang imbalance, emotional stagnation, external pathogenic invasion, the mother taking overly warming tonics during pregnancy, or the father's alcohol abuse.

This passage blends Daoist embryology with ethical philosophy, simultaneously depicting the mystical process of fetal development (with its numerologically significant weekly changes) while stressing the value of human life and filial piety. The concept of "ten thousand spirits providing protection" reflects Daoism's polytheistic characteristics, while the connection between health and filial duty shows clear Confucian ethical influences. Together, these elements embody Daoism's core principle of "cherishing human life."

This scripture discusses how the essence of health preservation and longevity lies in nurturing Jing (essence) and Qi (vital energy), with particular emphasis on exercising restraint in sexual activity. Using a metaphor, it states that just as damaged flowers produce shriveled fruit, excessive indulgence when one's essence is depleted, or neglecting recuperation after childbirth, will inevitably harm one's health.

It enumerates various harmful practices: overdressing children, overfeeding them, allowing excessive sleep; disciplining through fear (like pretending objects are insects or invoking ghosts for intimidation); letting children sleep in drafty areas—all of which violate fundamental principles of health cultivation.

Regarding "heavenly longevity" (one's innate lifespan), the key lies in not depleting Jing and Qi. While sexual activity is natural, excess must be avoided. Zhuangzi warned that nothing is more perilous than unrestrained indulgence in bedchamber affairs. The human body mirrors cosmic patterns: the left kidney corresponds to Water, the right kidney's Mingmen (Gate of Life, a foundational concept in Chinese medicine) corresponds to Fire—much like the Daoist emblem of the Dark Warrior (Xuanwu), where turtle and serpent intertwine in the northern sky. The bladder aligns with the left kidney, while the Triple Burner (Sanjiao, the three bodily cavities in Chinese medicine) corresponds to the right kidney.

The text details the Triple Burner's locations: the Upper Burner at the Danzhong acupoint (chest center) connects to the heart; the Middle Burner above the navel links to the spleen; the Lower Burner below the navel governs kidney Qi. In states of tranquility and desirelessness, essence disperses through the Triple Burner to nourish the entire body. But when desire arises, the "fire of passion" draws essence outward through the Mingmen. Tragically, while human vitality is finite, desires are boundless—like wood fueling a fire until it consumes itself, unchecked indulgence exhausts one's primordial energy.

In youth, when blood and Qi remain unsettled, few heed Confucius' admonition: "In youth, guard against lust." In old age, when one should embrace serenity, many fail to emulate Liezi's mastery of life-nourishing arts. These are the critical points where primordial Qi is squandered.

Between heaven and earth, humans stand alongside heaven and earth as the Three Powers (referring to the three fundamental constituents: heaven, earth, and humanity). If one can uphold the balanced and proper Dao, they may cultivate themselves into sages or even immortals. Although humans are vastly outnumbered by the myriad beings of heaven and earth, modern people neglect the cultivation of human virtue, indulging in greed and sensual pleasures, which leads to the continuous depletion of life energy (Qi), ultimately reducing them to the level of ordinary creatures. This is the root cause of aging, illness, and premature death. Understanding this principle, one must learn to cherish and nurture oneself to attain the lifespan endowed by heaven (natural longevity bestowed by the cosmos).

Regarding desires, the Yellow Emperor once said: balance between Yin and Yang is the proper Dao, while imbalance leads to illness. Just as the four seasons must follow their natural order—without autumn after spring, or summer after winter—disrupting this harmony violates the laws of nature. The reason sages maintain good health is that they understand the Dao of harmonizing Yin and Yang, but they place even greater emphasis on preserving essence (Jing) to safeguard their innate vital energy (the life force one is born with).

The Plain Maiden (an ancient expert in bedroom arts) proposed guidelines for the frequency of sexual activity at different ages: once every four days at twenty, once every eight days at thirty, once every sixteen days at forty, and once every twenty days at fifty. These standards vary by individual—those with robust constitutions and ample nourishment are like deep wells with abundant water, where moderate use is harmless. But those with weak constitutions and insufficient Qi who force themselves are like frail individuals straining beyond their limits, inviting misfortune instead.

After sixty, one should abstain to preserve essence. However, if one's vitality remains exceptionally strong, prolonged suppression should also be avoided, as it may lead to ailments like abscesses. Pengzu (an ancient longevity master) held that men and women need the harmonization of Yin and Yang. While complete abstinence from desire is ideal, moderate sexual activity can also benefit longevity—twice a month, twenty-four times a year, is said to extend life to two hundred years.

Renowned physicians point out: excessive longing without fulfillment can lead to "white dissipation" (abnormal vaginal discharge or seminal loss). Overindulgence in sexual activity weakens the "ancestral sinews" (the male reproductive system). Medical texts record: men are rooted in essence (Jing), women in blood. When essence is abundant, desire naturally arises; when blood is vigorous, conception becomes easy. Prolonged isolation that severs the balance of Yin and Yang, with desires left unregulated, can trigger imbalances, manifesting as alternating chills and fever.

This passage discusses the Daoist health preservation principle of moderating desires. Two medical cases are presented first: Tang Jing, a wealthy young man, suffered from genital ulcers due to excessive indulgence in sexual pleasures, while Han Nü, a maid of the Prince of Jibei, developed back pain from unfulfilled romantic desires. These examples illustrate the necessity of restraining one's desires.

Regarding early marriage: Thin and weak women should marry in time to nourish their blood, while physically weak men should abstain from sexual activities and wait until maturity to marry. Ancient texts state that premature loss of virginity (po yang) in men damages their Jing (essence), while early loss of virginity (po yin) in women depletes their blood vitality. If a man engages in intercourse before his Jing-Qi has fully matured, he may develop incurable illnesses later in life. Young girls exposed prematurely to male companionship risk early leakage of yin energy, harming their health. Adolescents obsessed with sexual fantasies may experience scattered Shen (spirit) in boys and amenorrhea in girls.

Concerning excessive desires: The Huangting Jing (Yellow Court Scripture) teaches that moderation in sexual activity is paramount for longevity. Pengzu advised that superior practitioners sleep in separate beds, moderate practitioners use separate blankets, and that solitary sleep surpasses any tonic. Laozi observed that desires arising from the five organs can still be controlled, but unchecked indulgence leads to dissipation of Jing-Qi. Pengzu warned that obsession with beauty brings the calamity of depletion. The Yinfu Jing (Scripture of the Hidden Talisman) compares seductive music and beauty to bone-cutting saws—those who lack awareness drown in desire. The renowned physician Quan Yuanqi noted that lust consumes Jing, frequent intercourse scatters it, and health seekers should treasure and restrain it.

Special caution for the elderly: With declining Qi and blood in old age, heightened sexual desire requires particular restraint. Each act of temperance is like adding oil to a dying lamp, while indulgence exhausts the remaining reserves. As Zhuangzi wisely said: "Those with deeper desires have shallower innate endowments."

(Note: "Po yang" and "po yin" refer to first sexual experience; "tiangui" denotes menstruation; "Jing-Qi" represents vital essence, a core concept in Daoist cultivation.)

During the Spring and Autumn period, the renowned Qin physician He diagnosed the Marquis of Jin's illness, stating: "Your ailment stems from excessive intimacy with women. This is neither ghostly affliction nor dietary imbalance, but rather the dissipation of vital essence (Jing) due to lustful indulgence." When the Marquis asked, "Should one then abstain from women entirely?" Physician He replied: "The key lies in moderation."

The Mysterious Pivot Scripture (Xuanshu Jing) reveals: The primordial Qi (Yuanqi) of the human body originates from the Gate of Life (Mingmen) between the two kidneys (with the right kidney housing the Mingmen). This is the dwelling place of spirit (Shen). Through careful preservation and cultivation, ensuring the smooth circulation of Qi and blood while preventing the exhaustion of spirit, one may achieve longevity matching heaven and earth.

The Treatise on Primordial Qi (Yuanqi Lun) teaches: Human desires are boundless, yet pursuing infinite cravings with finite vitality is self-destruction. As immortal scriptures warn: Do not overexert the body, do not disturb the vital essence (Jing), maintain mental tranquility—only thus can longevity be attained. Scriptural verses proclaim: Dao practitioners treasure essence as supreme jewel, guarding it like hidden treasure. Shared with others, it creates life; preserved within, it nourishes existence. Even the immortal infant (Neidan term) formed through alchemy must not be lightly depleted—how much less should it be squandered? Unaware excessive loss accelerates aging and endangers life.

Immortal texts advise: Among the ways of Yin-Yang union, seminal essence holds supreme value. Guard it prudently to prolong life. Ancient records state: Indulgence in sensual pleasures agitates the spirit, while emotional entanglements deplete primordial Qi. Daytime fantasies and nighttime dreams chasing insatiable desires exhaust the hundred spirits, causing the bodily "dwelling" to collapse like a house losing its treasures.

Texts employ this metaphor: Reckless desire resembles rotten wood snapping in wind or crumbling embankments collapsing at water's touch. Moderation in passion can equally lead to longevity. The kidney meridian connects to ears, the bladder channel emerges at eye corners. Blindness and deafness often originate from sexual excess.

Human lifespan depends on disciplined cultivation. Proper regulation brings longevity; indulgence makes life ephemeral as morning dew. Excessive desires damage essence—what we should cherish most are life, body, and vital essence. Deficient liver essence causes blurred vision; insufficient lung essence leads to emaciation; depleted kidney essence results in weak Qi; inadequate spleen essence makes teeth and hair fall. Persistent loss of true essence invites disease and death.

The Lament of the Immortals (Shenxian Kexi Xu Ge) sighs: Alas! The Primordial Yang Palace (Dantian) has lost its master. Once essence flows away with lust, the assembled spirits can only weep farewell. Like pearls sinking into the sea, never to be retrieved. Practitioners should take ancient immortals as mirrors, understanding essence as life's foundation. As trees require deep roots for lush foliage, the human body depends on essence for health and longevity.

This scripture primarily discusses the art of bedroom cultivation, emphasizing the dangers of forced indulgence and enumerating various prohibitions to observe.

First, it states that excessive indulgence depletes Jing (essence) and Qi (vital energy), causing the "Three Corpses (the three malevolent spirits believed to reside in the human body according to Daoism) to rejoice and the Seven Po (corporeal souls) to rage," leading to irreversible decline in blood and Qi. It is akin to the "jade furnace and alchemical cauldron" (referring to the key energy centers in internal cultivation) losing their master. The text warns against indulging in sensual pleasures, as the divine spirits within the body will gradually depart without one’s awareness.

Forcing sexual activity is extremely harmful:

The Suwen (Yellow Emperor’s Inner Canon) records that engaging in intercourse under duress damages kidney Qi, leading to withered marrow, back pain, and stiffness. The Huangting Jing (Yellow Court Scripture) also states that preserving the "chamber of essence" and avoiding reckless loss is essential for longevity. Medical texts mention that forcibly taking elixirs to enhance performance when impotent will deplete kidney water (Yin) and stoke heart fire (Yang), drying out the Five Viscera and causing wasting-thirst syndrome. Those who force intercourse experience symptoms like physical weakness, emaciation, nocturnal emissions, tinnitus, and darkening of the complexion. The Zhenren (perfected beings) caution: the way of nurturing life lies in not forcing what cannot be done—just as one should not force eating or drinking, one must not force desire, lest primordial Qi scatter.

There are eight major prohibitions for sexual activity:

1. Engaging after a full meal harms blood and Qi, leading to intestinal disorders with bloody stools and abdominal pain.

2. Intercourse while intoxicated damages the liver—men suffer from diminished essence and impotence, while women experience irregular menstruation, blood stasis, and sores.

3. Performing under candlelight is a lifelong taboo.

4. Engaging while angry causes abscesses and ulcers.

5. Intercourse during fear leads to collapse, night sweats, and, over time, consumptive disease.

These actions severely deplete primordial Qi and are fundamental causes of shortened lifespan.

This health preservation classic primarily discusses taboos regarding sexual intercourse, enumerating various situations to avoid that could otherwise harm health or even endanger life.

Engaging in intercourse when physically exhausted after long journeys causes five types of wear and tear. Intercourse while a woman’s menstrual cycle is still ongoing may lead to vitiligo, and the invasion of cold Qi can result in sallow complexion or even infertility. Having intercourse with unhealed wounds disrupts the blood and Qi, worsening the injury. Suppressing urination during intercourse leads to painful urination and pale complexion, and in severe cases, sharp abdominal pain or death.

Intercourse immediately after recovering from illness, or young people indulging excessively without restraint, cannot be remedied even with the best tonics. Over time, this depletes primordial Qi (Yuanqi), like a lamp burning out when the oil is exhausted, or a person wasting away when the marrow dries up. Only by maintaining proper care can one stay strong—many ailments in old age are self-inflicted.

Intercourse disturbs the Three Burners (Sanjiao, the upper, middle, and lower energy regions): when heart-fire stirs, desire blazes; entering water causes middle burner stagnation and jaundice; excess Qi in the lower burner darkens the forehead; and blood-heat in the upper burner may expel black, congealed blood through stool. Men and women bathing together easily contract such illnesses.

Intercourse after consuming medicines like musk opens the body’s gateways, leading to Qi dissipation—severe cases cause dizziness, while milder ones impair mental acuity. Eating too much garlic before intercourse harms the liver, dulling the complexion. Wind-strike after sweating during intercourse results in exhaustion-wind syndrome. Those with inflamed eyes must abstain, lest internal heat worsens.

Intercourse before full recovery from illness can be fatal, as recorded in the Records of the Three Kingdoms: a patient diagnosed by Hua Tuo engaged in intercourse before complete recovery and died three days later with his tongue protruding several inches.

Particularly avoid intercourse during extreme heat or cold, violent storms, thunder, eclipses, or other celestial anomalies, as well as in places with heavy Yin energy like temples, monasteries, wells, latrines, and graves. Engaging in intercourse during these times or locations severely damages one’s spirit (Shen).

This scripture presents Daoist teachings on sexual taboos and the proper way of procreation, divided into two main sections:

The first part warns against engaging in sexual relations on specific forbidden dates. Intercourse during the new moon (first day of the lunar month) shortens one's lifespan by twelve years, during the full moon (fifteenth day) by ten years, and at month's end by one year. Other critical dates like the eighth, twenty-third, the Three Origins festivals (Shangyuan, Zhongyuan, Xiayuan), equinoxes, solstices, and Earth God festivals all incur four to five years of life reduction. Particularly dangerous are the Gengshen and Jiazi days or one's birth year - violating these taboos invites disasters ranging from illness to sudden death. The text specifies that intercourse during the "Nine Poison Days" (fifth to seventh of the fifth lunar month) leads to death within three years, while the night of the tenth day of the tenth month guarantees death within a year.

The second section illustrates the consequences of violating these prohibitions through historical anecdotes. It recounts how Meng Chang, ruler of Later Shu during the Five Dynasties period, took Lady Zhang Lihua as consort but incurred divine punishment when they committed sacrilegious acts near a Daoist temple - Zhang was struck dead by lightning. Later, the Daoist priest Li Ruochong witnessed Zhang's ghost being punished in the temple during the Shangyuan festival, a consequence of their earlier blasphemy. The text concludes with the example of Prince Xiaoping of Jian, showing that merely acquiring beautiful concubines doesn't ensure progeny, implying the need to follow proper procreative principles.

The scripture emphasizes how ancient people often lived full lifespans while modern people die prematurely, attributing this to ignorance of these temporal taboos and unrestrained desires. These prohibitions are systematically recorded in the Daoist underworld bureaucracy, where violations result in corresponding deductions from one's allotted lifespan.

Regarding the optimal age for marriage and childbearing, ancient scholars held that while males become capable of reproduction at sixteen, they should ideally wait until thirty to marry; females, though menstruation (Tiangui) begins at fourteen, should postpone marriage until twenty. This principle ensures both partners reach full physical maturity (complete Yin-Yang constitution) before conjugal relations, thereby producing robust and long-lived offspring. Violating this natural rhythm was considered the reason many nobles remained childless. Historical records mention a ruler who, upon following this advice, fathered six sons within two years.

Medical texts document that excessive exhaustion damaging the Kidney Meridian in males may cause semen to become thin as water or cold as ice, or lead to coagulation preventing ejaculation—all manifestations of severe Jing-Qi depletion causing infertility. For women, overexertion leading to Qi-Blood deficiency may result in irregular menstruation or abnormal vaginal discharge, compounded by improper recuperation, dietary indiscretion, or exposure to cold that allows pathogenic cold to invade the uterus (Zizang), similarly causing sterility.

The most auspicious conception window occurs on the first, third, and fifth days after menstruation when the cervical os (Zimen) opens favorably for conceiving males; the second, fourth, and sixth days predispose to female offspring, while conception beyond six days rarely succeeds. Notably, households should avoid cultivating trumpet vines (Lingxiaohua), as their fragrance allegedly induces sterility in pregnant women.

Pregnancy taboos vary monthly: During the first month when the Liver Meridian nourishes the fetus, avoid rage and overexertion; the second month requires Gallbladder Meridian support, prohibiting fright; the third month involves Heart-Kidney essence cultivation, forbidding indulgence and chill; the fourth month engages the Triple Burner Meridian (Sanjiao), demanding balanced activity; the fifth month relies on the Spleen Meridian for muscular development, prohibiting obsessive thoughts and dietary excess; the sixth month involves the Stomach Meridian, restricting improper eating; the seventh month depends on the Lung Meridian for skin development, prohibiting melancholy and shouting; the eighth month requires Large Intestine Meridian coordination for Qi nourishment, avoiding drying foods; the ninth month involves Kidney Meridian skeletal development, prohibiting fear and intercourse; the tenth month sees the Bladder Meridian assisting the Kidneys as the fetus completes meridian and organ development awaiting natural birth. The Heart isn't mentioned as it governs Shenming (spiritual illumination) and requires no special maintenance.

(Note: Terms like "Liver Meridian of Foot Jueyin" and "Triple Burner Meridian of Hand Shaoyang" reference TCM meridian nomenclature denoting energy pathways of respective organ systems)

The heart is the sovereign of the five organs, like an emperor that should not be agitated recklessly. Proper regulation during pregnancy prevents harm to the fetus's organs, and acupuncture on related meridians should be avoided each month. If a pregnant woman loses her appetite, simply providing the foods she craves will improve her condition. For dietary restrictions, refer to the dedicated chapter on food prohibitions.

The prenatal education theory of Taigong (Jiang Ziya) states: Expectant mothers should reside in quiet chambers, listen to uplifting words, recite poetry and classics, and discuss rituals and music. They must avoid coarse language, refrain from seeing ugly sights, and abstain from wicked thoughts—this ensures their children will enjoy both blessings and longevity, embodying loyalty and filial piety.

Yanshan Weng (a Song Dynasty health preservation expert) observed: It is already improper if parents fail to restrain desires during pregnancy, yet some even engage in intercourse during labor. This causes newborns to emerge with fetal membranes (white covering) on their heads, becoming the root of chronic weakness and illness.

On infant taboos: Ancient medical texts record that when a toddler cannot yet walk and the mother becomes pregnant again, continued breastfeeding may lead to "ba disease" (a type of infantile malnutrition), manifesting as sallow complexion, emaciation, persistent fever, and hair loss.

Other medical texts note: Many infants suffer from early weaning due to insufficient breastmilk, or from mothers habitually pre-chewing adult food for them. This often causes indigestion, bloating, withered hair, and listlessness.

The Essential Guide to Childrearing imparts this principle: Feed children warm food rather than cold, soft rather than hard, and always prioritize moderation over excess (this is an exceptionally profound childcare rule).

Medical texts specifically warn: A mother's tears must not drip into an infant's eyes, as this damages vision and causes corneal opacities.

Miscellaneous Records of Daily Life documents childcare details: Never let children point at the moon, lest they develop angular cheilitis (mouth corner sores); never let them drink directly from gourds or bottle openings, as this induces stuttering; children's clothes must not be left outside overnight.

This classic health preservation text explains how to attain longevity through daily lifestyle adjustments. Li Pengfei, the Serene Heart Elder of Jiuhua Mountain, likens the human body to a house: the eyes, ears, mouth, and nose are like windows and doors; the limbs and joints serve as beams and pillars; while hair and skin form the walls and roof tiles. Within the body, there are vital centers such as the pivot of Qi (Qi Shu), the chamber of blood (Xue Shi), and the dwelling of consciousness (Yi She) – each functioning like distinct spaces within a dwelling.

The crucial point is that the heart acts as the master of this "bodily dwelling." If the master neglects regular maintenance, allowing wind and rain to erode it, termites to gnaw at it, or thieves to damage it, the house will gradually deteriorate until it becomes uninhabitable. Similarly, only when the spirit-mind (Shen) remains clear and bright can all parts of the body remain intact – this forms the foundation for achieving longevity (the lifespan of Earthly Primordiality).

Laozi states that human natural lifespan could originally reach a hundred years, and those skilled in self-cultivation might even live a thousand years. This is like oil lamps – small wicks and large wicks burn for different durations. The essential principles of health preservation are: when others speak loudly, I keep my voice soft; when others exhaust their mental energy, I minimize unnecessary thoughts; when others become irritable, I maintain tranquility. By not allowing worldly affairs to disturb the spirit-mind, embracing detachment and Wuwei (non-action), one naturally achieves spiritual completeness and abundant Qi – this constitutes the finest elixir of longevity.

Zhuangzi supplements this wisdom: Those who truly cherish life neither harm their bodies through indulgence during wealth and honor, nor damage their forms through excessive striving during poverty and hardship. Many modern individuals in positions of power and influence ironically lose their health precisely because of these circumstances.

Sun Simiao's Health Preservation Inscription provides more concrete guidance: Great anger damages primordial Qi (Yuanqi), excessive thinking depletes spiritual energy (Shen). When spiritual energy is exhausted, willpower disperses easily; when vital force weakens, illnesses find easy entry. Key precautions include: avoiding emotional extremes, maintaining balanced eating habits, and particularly avoiding late-night drunkenness and morning outbursts of anger. The text recommends lightly tapping teeth (Ming Yun Gu, "striking the cloud drum") before bedtime and swallowing morning saliva (Shu Yu Jin, "rinsing jade nectar") upon waking – these practices keep pathogenic influences at bay and ensure natural abundance of vital essence (Jing). To minimize illness, one should also reduce consumption of pungent foods. Maintain a joyful spirit-mind and cherish harmonious primordial Qi. Lifespan depends not on heavenly mandate but on personal cultivation. By following these principles, ordinary people too can refine themselves into perfected beings.

The Canon of Three Origins for Prolonging Life states that those who do not understand the art of nurturing life indulge their desires and act contrary to nature's joys. They exhaust their Shen (spirit) in pursuit of cleverness, suffer anxiety over gains and losses, strain body and mind with ritual constraints, and exhaust themselves chasing wealth. Unless these four obsessions are eliminated, the heart-mind will become diseased.

Tao Hongjing (the renowned Daoist thinker) observed: Among all beings, only humans possess supreme spiritual intelligence, yet a hundred years pass like a brief sojourn. Without cultivating body and mind, one inevitably becomes burdened with illness and suffering.

On Excessive Joy:

Overindulgence in joy harms the ethereal and corporeal souls (hun-po), leading to mental derangement manifested as confusion and withered complexion. Uncontrolled emotions shake life's foundation, while emotional equilibrium ensures peaceful dwelling, repels pathogenic Qi, and brings longevity. Emotional extremes disrupt Yin-Yang harmony, obstruct Qi-blood circulation, and may cause toxic abscesses.

Moderate joy harmonizes Qi-blood and opens one's nature, but excessive joy damages the heart. Chronic overindulgence depletes primordial Qi—hence restrained joy preserves mental vitality. The Huainanzi records that excessive joy depletes Yang Qi. Liu Gongdu of the Tang Dynasty maintained sprightly gait past eighty by never expending primordial Qi on emotional extremes and keeping his Dantian (Qi sea) warm.

On Anger:

Rage causes Qi to rebel violently, sometimes inducing hematemesis. Frequent anger damages physical form, while resentment shortens lifespan. Angry glaring harms eyesight. Great fury injures the liver, preventing Qi-blood from nourishing sinews, leading to vomiting blood, diarrhea, blurred vision, or sudden syncope.

Intense anger must be checked promptly—protracted fury damages Shen, causing forgetfulness, dull lumbar pain, and restricted movement. Chronic anger disorders the meridians, withers hair, atrophies sinews, and ultimately damages the five viscera beyond remedy. Only by transforming an irascible temperament can one truly regain vitality.

Tao Hongjing said: The primary Daoist practice for nurturing life is reducing anger. Sudden rage during meals disturbs Shen and causes chaotic dreams. The Huainanzi notes that great fury disrupts Yin Qi.

(Note: "Rong-Wei" refers to the Qi-blood circulatory system; "Qi sea" denotes the Dantian; "sudden syncope" indicates abrupt loss of consciousness.)

Renowned physicians have observed that people fail to attain longevity primarily because they neglect self-care. Frequent anger, conflict, and emotional indulgence are like gathering toxins to assail the spirit (Shen), damaging the marrow internally and depleting the muscles externally. As righteous Qi (vital energy) weakens daily and pathogenic influences grow stronger, it resembles using an ocean to extinguish a torch or toppling Mount Hua to block a tiny stream.

An ancient verse warns: "Rage burns fiercer than wildfire, consuming harmonious Qi (vital energy) and wounding the self. When conflicts arise, refrain from contention—let calm return once matters pass."

On the harms of excessive grief: Medical texts record that prolonged sorrow leads to haggard features, labored weeping, and imbalances in Yin-Yang. Attending funerals or visiting the sick often disperses the spirit of joy. Grief injures the hun (ethereal soul), resulting in mental confusion, distraction, and, over time, atrophy of the genitalia, limb spasms, and rib pain that restricts movement. Extreme grief damages the pericardium meridians, stirring Yang Qi internally and causing heart ulcers or bloody urine. Profound sorrow depletes life’s foundation, tightening the heart’s channels, expanding the lung lobes, and obstructing the upper burner (thoracic cavity), disrupting Qi and blood flow. Trapped heat then dissipates primordial Qi (Yuanqi). Grief also weakens the will, manifesting as brittle hair, dull complexion, and eventual loss of vitality.

On the dangers of overthinking: The Yellow Emperor stated, "When the body is not overworked externally and the mind is free from internal turmoil—when one dwells in serenity and contentment—the form remains unharmed, the spirit (Shen) unfragmented, and a century of life attainable." Peng Zu acknowledged that humans cannot eliminate thought entirely but should gradually reduce it. The body thrives in stillness; harmonized Qi (vital energy) prevents illness. The path of cultivation requires no complexity—merely abstaining from obsessions over clothing, food, sensory pleasures, gains, losses, or reputation. When the mind avoids exhaustion, longevity follows. Gengsang Chu emphasized preserving the body and nurturing life by refusing entanglement in endless rumination. The Ling Shu notes that overthinking injures the spirit (Shen), causing anxiety, muscle wasting, withered hair, and sallow skin. Medical texts add that chronic worry and fear stagnate Qi, generating phlegm that coalesces with Qi to breed disease.

(Note: "Hun" refers to the ethereal soul or spiritual consciousness; the "upper burner" denotes the thoracic region; "nutritive and defensive Qi" (Rong-Wei) describes the Qi-blood circulatory system; "Qi" (炁) specifically signifies life energy.)

This scripture primarily discusses the physical harms caused by excessive contemplation, sorrow, and fright, combining medical observations with historical anecdotes for illustration.

Regarding excessive contemplation: When a person's Qi (vital energy) surges upward without descending, it leads to five types of choking disorders due to overthinking. Texts state that excessive contemplation weakens heart Qi, allowing external pathogens to invade, resulting in labored breathing and Qi stagnation that subsequently impairs digestion. Overthinking damages the heart, causing hematemesis, nosebleeds, and brittle hair. Zhuge Liang serves as a classic example—Sima Yi, upon learning of his micromanagement and minimal food intake, predicted his early demise, which later proved accurate.

A man named Zhang Chengjie mentioned that the notion of "consumptive disease being caused by worms" is unreliable, akin to a lovesick man who pined for his separated lover until he became emaciated and died of melancholy. Another scholar neglected food and sleep in his studies until a purple-clad figure (representing the grain spirit that sustains life) appeared, warning, "If you continue thinking like this, I will perish." Only then did he cease overusing his mind, restoring normal eating habits. This demonstrates how excessive contemplation causes Qi stagnation, unresolved heat accumulation, and eventual dual deficiency of Qi and blood, leading to severe illness.

On the harms of sorrow: The Ling Shu Jing (Spiritual Pivot) notes that grief and anger cause Qi to rebel upward, obstructing the channels of Qi and blood flow, resulting in congealed blood and stagnant fluids that form masses. Chronic sorrow damages the lungs, causing chest tightness, rebellious Qi, and unrelenting back pain; it also impairs consciousness, leading to mental confusion and limb weakness. Eating while distressed startles the heart-mind (Shen), causing insomnia and vivid dreams. For women especially, it triggers menstrual disorders, internal heat stagnation, dull complexion, and physical wasting. Profound grief further disrupts normal daily rhythms.

Regarding fright: While not elaborated in detail, contextual clues indicate that intense fear similarly disrupts Qi and blood circulation. These observations embody the core Daoist health preservation principle that "excess of the seven emotions can all cause illness."

This scripture primarily discusses how emotions like fear, hatred, and attachment harm the body, and methods for regulating one's mental state to maintain health.

When experiencing severe fright, if one cannot resolve it internally, it leads to deficiency of gallbladder Qi (Danqi) and unsettled spirit (Shen). Specific manifestations include palpitations, irritability, unexplained sweating, bodily edema, and loss of appetite. Prolonged states of fear damage kidney essence (Jing), causing symptoms like soreness in the lower back and knees, nocturnal emissions, resulting in dysfunction of the five organs and overall physical weakness.

During extreme terror, one's spirit loses its anchor, leading to confused thinking and disrupted Qi-blood circulation. Particularly severe fright directly harms the kidneys. If such fear persists unaddressed, it causes depression and mental confusion, violating fundamental health preservation principles. Emotions like terror and excessive worry internally damage the organs, sometimes even leading to blood vomiting in severe cases.

Illustrative cases include: A woman experienced difficult childbirth for days due to premature entry into the delivery room causing fearful Qi stagnation—only after taking Qi-regulating herbs like perilla leaf did she deliver successfully. Another man, frightened upon encountering a drunken giant while mountain climbing, developed frequent urination (50-60 times daily) because the shock scattered heart-fire and depleted kidney Yang.

Yet some remain composed in danger: An official showed no change in expression when lightning struck behind him in a temple, shattering pillars; an envoy calmly kept reading during a storm at sea while others panicked when the mast broke. These examples demonstrate the importance of inner cultivation.

Regarding hatred and attachment, the Laozi (Daode Jing) states: Excessive fondness inevitably exhausts the spirit; extreme accumulation inevitably invites loss. Knowing contentment prevents disgrace; understanding moderation ensures longevity. Particular obsession with beauty depletes vital energy, while excessive greed for wealth invites misfortune—what's gained proves little compared to what's lost. Only through contentment and moderation can danger be avoided.

The scripture advises: When disliking something, avoid excessive hatred—maintain equanimity; when loving something, avoid excessive attachment. Preserving mental equilibrium constitutes the true Dao of health preservation.

This scripture primarily discusses how excessive indulgence in sensory pleasures harms both physical and mental health, and how moderation can nurture life and prolong longevity.

The eyes and ears are gateways through which Jing (essence), Qi (vital energy), and Shen (spirit) dissipate. Laozi observed that obsession with dazzling colors dulls the eyes, while immersion in decadent music deafens the ears. Pengzu (an ancient longevity master) noted that though seductive music may delight the ears, it scatters the Shen (spirit). Confucius taught to "see not what is improper, hear not what is improper," while Mencius praised Boyi for refusing to look at unseemly sights or listen to unwholesome sounds.

Sun Simiao (a Tang dynasty physician) listed numerous behaviors that damage the eyes: eating raw spicy food followed immediately by hot meals, prolonged gazing into the distance, reading at night, prolonged exposure to smoke and fire, excessive chess-playing and drinking, consuming hot noodles, long hours of copying texts, intricate engraving, excessive sexual activity, excessive weeping, reading by moonlight, stargazing at night, bloodletting by pricking fingers, reading after sunset, staring directly at the sun or moon, gazing at distant mountains, hunting and rushing about, or chasing animals against the wind. All these contribute to deteriorating eyesight.

The scripture emphasizes: the heart’s Shen (spirit) dissipates through the eyes—prolonged looking harms the heart; the kidneys’ Jing (essence) dissipates through the ears—prolonged listening harms the kidneys. Indulging in sensory pleasures—sights, sounds, and flavors—disrupts the harmony of the five organs, disturbs Qi and blood, and scatters the Shen (spirit). Once vital energy weakens, pathogenic influences seize the opportunity to invade.

Health-preserving recommendations include: avoiding prolonged gazing at the sun, moon, or stars; never looking down into deep wells (which shortens lifespan); keeping wells and ditches clear (otherwise, blindness or deafness may result); and refraining from watching violent fights (which stagnates Qi). Among all colors, a black screen is most beneficial for eye health.

The Huainanzi states that the five colors confuse vision, the five sounds disturb hearing, and the eyes and ears should not be overworked for long periods. A final case is mentioned: an elderly man in his eighties still possessed sharp eyesight, able to read small text at night. He attributed his secret to avoiding animal liver since childhood, as the Bencao (Classic of Herbal Medicine) records that foods like sheep liver harm the eyes.

The core of these health-preserving methods lies in moderating sensory indulgence, avoiding excessive depletion of Jing, Qi, and Shen, and maintaining well-being through mindful daily habits.

This passage discusses two key principles of health cultivation: the harm of excessive suspicion and the necessity of moderation in speech and laughter.

Regarding how suspicion damages health, the text explains that prolonged states of doubt lead to mental agitation. The example is given of a Jin dynasty ruler who developed "gu disease" (a disorder resembling mental confusion) due to excessive indulgence in sensual pleasures, which physicians diagnosed as spiritual disturbance caused by overstimulation. Ancient people used the character 蛊 (gu, meaning "venomous insect") as a metaphor - just as worms in a vessel cause decay, persistent suspicion erodes mental health like parasites corrupting the mind.

Several illustrative cases are provided: a man who mistook the shadow of a bow on the wall for a snake while drinking, becoming ill from fright; a monk who stepped on an eggplant at night, imagining he'd killed a living creature and spent hours hallucinating vengeful spirits. These examples demonstrate how excessive suspicion directly impacts both mental and physical well-being.

Concerning speech moderation, the text cites Laozi's philosophy that health cultivation requires restraining sensory channels ("blocking the openings and closing the gates"). Indulging desires ("opening the passages and indulging affairs") depletes vital energy (Qi). Specifically:

• Excessive talking and laughing injures kidney Qi, leading to back pain
• Unrestrained mirth damages the spirit (Shen), causing mental distraction
• Frequent loud laughter harms internal organs, inducing abdominal pain around the navel

Daoist practitioners particularly emphasize speaking less to preserve vital energy, embodying the health wisdom of "guarding against excessive speech to prevent Qi depletion and preserve longevity."

(Note: The terms "openings" (兑) and "gates" (门) are Daoist technical terms referring to sensory channels; "emotional Qi" (情炁) denotes spiritual energy; "perfected person" (真人) indicates an enlightened Daoist adept.)

The Essentials of Health Preservation in The Book of Prolonging Life Through the Three Primordial Energies can be understood as follows:

Excessive talking, contentious debates, and overconsumption of salty or bitter foods all harm lung health. The text notes that speaking too much depletes one's primordial Qi (元气), and one should pause appropriately. Saliva, known in Daoist practice as "golden nectar and jade wine" (金浆玉醴), nourishes the body when swallowed regularly, maintaining the fullness of Jing (精, essence) and giving one a radiant complexion. Those who cultivate health should avoid spitting carelessly, as saliva is a vital substance for bodily nourishment—the farther one spits, the greater the loss. Ideally, one should refrain from spitting altogether.

When saliva flows within the body, it rises as sweet springs, gathers to form the nourishing "Flower Pool" (华池, the mouth), disperses as bodily fluids, and descends like dew, moistening the organs, unblocking the meridians, nurturing the Shen (神, spirit), and strengthening the limbs and hair. The joints contain lubricating fluids; when wind-stroke occurs, these fluids surge upward, causing throat noises. In such cases, medicine should guide them back to their proper place—they must not be casually spat out, as doing so may leave one disabled even if life is preserved. Similarly, children experiencing convulsions should not spit out their saliva.

There was a case of someone whose body withered from habitual spitting, only recovering after learning the "Method of Returning Fluids" (回津法), a health-preserving technique of swallowing saliva back into the body. All bodily fluids are precious: on the skin, they manifest as sweat; in the muscles, as blood; in the kidneys, as Jing (精, essence); in the mouth, as saliva; in the spleen, as phlegm; and in the eyes, as tears. Once sweat, blood, tears, or Jing are lost, they are hard to recover—only saliva can be reclaimed, and reclaiming it sustains vitality. A Daoist Golden Elixir (金丹) maxim states: "Preserving Jing and Qi is like being wealthy; squandering them is like begging."

Guangchengzi (广成子, an immortal from the Yellow Emperor's era) taught: "Do not overexert the body, do not disturb the Jing and Qi—only then can one preserve life." "Not overexerting" does not mean sitting motionless all day, which would stagnate Qi and blood, but avoiding excessive strain or ceaseless toil that exhausts one's vitality. Zhuangzi illustrated this with a parable: A man, afraid of his shadow, ran faster only to find it clinging closer—yet simply stepping into the shade made it vanish. This metaphor teaches that health preservation follows the principle of Wuwei (无为, non-action), aligning with nature's flow.

The Book of Prolonging Life through Three Primordial Energies discusses methods for avoiding bodily harm and preserving vital essence in daily life. In modern terms, it conveys:

Running recklessly without pause until complete exhaustion is as foolish as failing to rest one's shadow in the shade or allowing footsteps to fade through stillness. Ancient texts state: reckless bravado invites disaster, while knowing restraint preserves life. Excessive striving harms vitality, whereas measured wuwei (non-action) nurtures it.

Irregular routines and overexertion damage meridians—injuring yang channels causes nosebleeds, while harming yin channels leads to diarrhea. Those who eat immoderately allow pathogens to invade the zang organs through yin meridians, causing bloating, diarrhea, and dysentery. External pathogenic winds attack the fu organs via yang meridians, triggering fever, insomnia, panting, and cough.

Jing (essence) is the foundation of shen (spirit), qi (vital energy) governs shen, and the body houses qi. Overusing shen depletes it, exhausting jing desiccates it, and overexpending qi severs it. Strenuous exercise that causes panting and sweating wastes qi and blood.

Prolonged walking damages tendons (linked to the liver), while excessive standing harms bones (connected to the kidneys). Health preservation advice: walk without haste, stand before fatigue sets in, and never stand with your back to the sun. Galloping horses drive qi upward to the diaphragm—drinking water in this state causes qi-water clashes inducing vomiting.

Avoid bathing or crossing rivers in windy, sandy areas—follow experienced livestock to traverse quickly. The "water crossbow" creature can fatally strike reflections; scatter it by agitating the water before crossing. Never rest with legs outstretched after sweating, as this stagnates blood flow, causing foot and back pain.

Ancient night travelers often clicked teeth to repel ghosts. Shen Kuo's Dream Pool Essays records yellow "celestial snakes" in grass—their bites combined with dew cause leprosy-like ulcers; morning travelers beware.

Foggy days unfit for journeys; if necessary, drink modest alcohol to resist miasma (records show three dawn travelers: porridge-eater fell ill, fasting man died, drinker remained unharmed—alcohol fortifies qi against fog-poison).

Long sitting weakens muscles; prolonged lying depletes primordial qi. When seated, avoid facing away from sunlight or into wind—this invites consumptive disorders. Sitting/sleeping near graves dissipates shen. Sleeping exposed to wind congeals blood: in skin causing numbness, in meridians triggering spasms, in feet producing gout.

This classic text on health preservation focuses on sleep and daily living practices. When blood circulation is impaired, it leads to cold feet—a condition termed "Jue" (reversal).

Sleeping with lamps lit disturbs the Shen (spirit). The optimal posture is lying sideways with knees bent. Sleeping straight on one's back depletes heart Qi, while moderate stretching calms the spirit—though excessive extension invites pathogenic influences (Confucius advised "not to sleep like a corpse" for this reason). Speaking during sleep should be avoided, as the internal organs are in a relaxed state resembling an unplayed ancient Qing chime (Confucius similarly cautioned against "speaking while abed").

Specific prohibitions include: Never dangle feet over elevated surfaces, as prolonged practice weakens kidney energy and chills the feet; avoid drawing on the face with ink, which may cause the Hun and Po (ethereal and corporeal souls) to disperse; when nightmares occur, awaken gently without shouting—never illuminate with lamps lest the souls struggle to return; keep braziers away from bedheads to prevent chronic head heaviness, red eyes, nasal dryness, or even brain abscesses.

Health recommendations: Nasal breathing during sleep wards off pathogens—mouth breathing over time depletes Qi and blood; never cover the head completely while sleeping, and washing feet before bed prevents cold limbs. Critical warnings: Never sleep drunk facing wind currents to avoid losing one's voice; avoid drunken slumber in grain piles to prevent sores; never lie naked during thunderstorms or let others fan you while intoxicated.

Living space guidelines: Bedrooms require ventilation but must avoid cross-drafts (Pengzu discovered a family's three-generation streak of early deaths traced to wind seeping through their bedhead). Overheated clothing damages primordial Qi. Sleeping immediately after meals causes Qi stagnation and back pain, while lying exposed after sweating invites colds and rashes. Elderly must particularly avoid wind exposure (since the head gathers Yang Qi, wind disperses this vital energy).

Finally, washing practices: Excessive hair washing congests Qi in the brain, leading to emaciation. These methods embody the Daoist health philosophy of "Heaven-Human resonance"—aligning human rhythms with cosmic patterns.

This health preservation classic primarily discusses the taboos and proper methods of bathing and hair combing, which modern readers can understand as follows:

When washing hair or bathing, one must be cautious. Washing hair immediately after eating, using cold water, or washing with hot rice-washing water can all lead to headaches. After washing hair, avoid exposing it to wind and never sleep with damp hair tied up in a bun, as this may cause dizziness, blurred vision, increased dandruff, hair loss, toothache, or even deafness. Women must absolutely avoid washing hair during menstruation, as this may leave behind difficult-to-cure health issues.

Sleeping with un-dried water on the body after bathing allows moisture to accumulate in the lower abdomen and genital area, leading to kidney bi-pain (similar to what we now call kidney deficiency back pain). Using overnight bathwater to wash the body may cause skin diseases, while washing the face with it will make skin lose its luster and may even cause sores. Frequent bathing may make skin smooth but dissipates Qi and blood—those with weak constitutions are prone to toxic sores, which manifest from Qi-blood imbalance.

Using cold water to bathe when just recovered from illness damages the heart. Soaking in cold water immediately after sweating leads to bone bi-disease (similar to rheumatic bone pain). A famous physician once saw a woodcutter jump into a river to bathe while drenched in sweat and immediately predicted the man would die suddenly. Later, he saved him with garlic hot noodle soup—this shows even ordinary people should know these taboos, let alone wealthy families.

Suddenly washing hands with cold water during hot weather can harm the five organs, not to mention full-body bathing. When encountering a river after long travel while overheated, never wash the face immediately, or dark spots may appear. Those with eye diseases must avoid bathing, as it may cause blindness. A man named Bai Yanliang frequently suffered from red eye disease in his youth until a Daoist priest told him it would heal if he stopped washing his hair—he maintained this practice until his seventies without recurrence.

Regarding hair combing for health: frequent combing dispels wind and brightens vision, being a path to longevity. Combing hair a hundred times daily is ideal. Daoists emphasize combing 120 strokes each morning. To summarize the five essential health preservation techniques: frequent hair combing, regular face rubbing, diligent tooth tapping, frequent saliva swallowing, and proper breath regulation (breathing cultivation)—these five practices embody the ancient saying: "To seek immortality, first cultivate Kunlun (referring to the head)."

The Book of Prolonging Life through the Three Primordial Energies (Sanyuan Yanshou Canzan Shu) offers practical health advice that translates well into modern terms:

Hair Care:

Ancient practitioners viewed hair as an extension of blood essence. Daily combing was believed to stimulate blood circulation and dispel wind-dampness. Storing fallen hair in bedroom wall crevices was considered inauspicious over time. Accidentally consuming hair with food could cause illness - historical records describe cases of abdominal pain diagnosed as "hair concretions" (similar to modern trichobezoars), with severe cases even vomiting snake-like objects (likely tangled hair masses).

Elimination Habits:

Suppressing urination leads to urinary disorders and cold knees, while holding in stool predisposes one to hemorrhoids. Retaining urine causes knee chilliness, whereas stool retention triggers lower back pain and blurred vision. Vigorous activity or sudden temperature changes after meals may twist the bladder, causing acute pain that could prove fatal without prompt urination. Both straining during elimination and excessive restraint harm vital Qi (vital energy). Historical accounts document fatal edema cases from overdose of urine-retention medicines, demonstrating that scanty urination indicates bladder weakness requiring warming tonics rather than forced suppression. Additionally, relieving oneself under celestial bodies or facing northwest was believed to shorten lifespan.

Clothing Principles:

During early spring when ice persists, wearing "thick below, thin above" protects lower-body warmth to nourish Yang (active principle) and consolidate Yin (receptive principle). Insufficient spring clothing invites colds, cholera, indigestion and headaches. After heavy sweating, changing clothes or immediate washing prevents damp garments from causing skin ulcers, itching, and elimination difficulties. Crucially, removing half one's clothing during profuse sweating may induce "hemiplegic wind" (resembling modern facial paralysis or hemiplegia).

While reflecting ancient medical understanding, these practices - particularly regarding timely elimination and proper dressing - share remarkable congruence with contemporary health principles.

The Canon of Longevity Through the Three Origins records numerous essential health preservation techniques. Regarding post-drinking precautions, it warns that removing clothing, shoes, and socks to cool down while sweating may lead to beriberi. In winter, when wearing padded clothes or using thick quilts, one should never hastily remove layers upon sudden sensations of heat. Tao Hongjing (the renowned Daoist master) reminds us that padded garments shouldn't be added excessively—once warmth is achieved, timely removal is advised.

Folk sayings capture this wisdom differently across regions: Northerners say "For bodily ease, don't shed clothes lightly," while Southerners advise "For good health, adjust attire frequently." These seemingly contradictory proverbs both emphasize adapting clothing to environmental changes.

The Yellow Emperor's Inner Canon instructs alignment with natural rhythms: work at sunrise, rest at sunset, avoid overexertion, and steer clear of damp pathogens like mist and dew. Extreme weather demands particular caution—bitter cold, scorching heat, fierce winds, and dense fog all harm the body. Cold penetrating the marrow causes headaches and toothaches, while summer heat induces feverish pain. During violent storms, thunderstorms, or heavy fog, Daoist adepts recommend returning home immediately to burn incense, sit in stillness, and wait for fair weather before venturing out again.

The text also notes taboos: shedding tears on the new moon (shuori) or singing on the last day of the lunar month (huiri) may invite misfortune.

Regarding seasonal cultivation, the Inner Canon advises rising early and retiring late in spring while maintaining emotional ease—failure to do so injures the liver and predisposes one to summer ailments. Spring exposure to wind pathogens leads to summer diarrhea. During damp spring-summer transitions, excessive water intake causes rheumatism, profuse sweating, bodily heaviness, and dysuria—conditions best treated with Five-Ingredient Poria Powder.

Summer's three months of flourishing growth also demand late bedtimes and early rising, with serene emotions to ensure smooth Qi circulation. Tao Hongjing particularly emphasizes summer's cultivation challenges: with Yang energy radiating outward and Yin lying latent internally, abdominal discomfort easily arises. These time-tested health preservation insights remain profoundly relevant today.

Summer is the season when the body's Yang Qi disperses outward, leaving the functions of the heart, liver, and kidneys relatively weakened. During this time, one should pay attention to warm foods and maintaining body warmth—consuming warm meals can prevent gastrointestinal illnesses like cholera, and keeping the abdomen warm helps avoid many diseases.

When using ice in summer, special care must be taken. Ice should only be used to chill drinks, never chewed and swallowed directly, as the clash of cold and heat can trigger illness. From the summer solstice to the autumn equinox, it's best to minimize greasy pastries and butter-rich foods, as these conflict with the properties of alcohol, melons, and fruits—many summer ailments arise this way.

Tao Hongjing (a renowned Daoist physician) warned: Do not sleep with your head on cold objects for the sake of coolness, as this severely damages eyesight. Avoid sleeping outdoors in summer, as it can lead to skin diseases or facial paralysis. Those who suffer heatstroke in summer are prone to malaria in autumn. When sudden cold spells occur, seek shelter promptly to prevent seasonal epidemics.

Do not sit on sun-scorched stones immediately—their heat toxins can cause sores, while their residual cold may lead to hernias. When drenched in sweat, avoid direct exposure to wind, and never wash your face with cold water immediately after being under intense sunlight, as this invites eye diseases. If internal heat toxins are present, do not abruptly drink cold water or consume chilled food to force cooling—this could endanger life. In the fifth and sixth lunar months, stagnant marsh waters often harbor fish and turtle spirits; drinking it accidentally may cause abdominal lumps.

The Yellow Emperor's Inner Canon (Huangdi Neijing) states: The three months of autumn are a season of gathering and calm. One should sleep early and rise early, maintaining inner tranquility. Violating this principle harms the lungs, leading to winter diarrhea and insufficient energy reserves for the cold season. Autumn exposure to damp pathogens causes coughing and weakens the limbs. After the Beginning of Autumn (Liqiu), avoid frequent bathing to prevent dry, flaky skin. After the first day of the eighth lunar month, warm your feet with mild heat to keep the lower body free from cold.

The three winter months are for storing and conserving—when water freezes and the earth cracks, do not disturb Yang Qi. Sleep early and rise late, waiting for sunlight before activity. Stay warm and avoid cold, never sweating to the point of dispersing Yang Qi. Disregarding this harms the kidneys, resulting in springtime limb weakness and inadequate energy for the season's growth. Sudden warm spells in winter should be met with caution, as they bring seasonal epidemics. Winter exposure to cold pathogens predisposes one to springtime febrile diseases. As the body's Qi and blood retreat inward in winter, avoid sweating during labor, and take special care to keep the back warm.

Though winter is cold, one should avoid excessive heat when warming by fire. Do not warm your hands directly over flames—cease once they're comfortably warm, lest you deplete your vital Qi (blood energy) and develop feverish palms and soles (since the meridians of hands and feet connect to the heart).

After walking barefoot in snow, never wash your feet with hot water or drink heated wine immediately, or your toes may suffer frostbite and even detach. Similarly, when returning from extreme cold, refrain from consuming hot soups or scalding foods until the chill has fully dissipated.

The Treatise on Harmonizing Spirit with the Four Seasons states: The waxing and waning of Yin-Yang through the seasons is the root of all life. Thus, those skilled in nurturing life cultivate Yang energy in spring and summer, and nourish Yin energy in autumn and winter, aligning with the rhythms of growth and conservation in nature. To violate this principle is to damage one’s primordial Qi. The cyclical dance of seasonal Yin-Yang governs the life and death of all things; by following it, one avoids illness—this is the mark of attaining the Dao. The Classic of Heavenly Truth adds: The wise discern the shifts of Yin-Yang, harmonize with the seasons, and emulate the ancient True Ones’ practices, thereby prolonging their years.

Dawn and Dusk Taboos:

Carry a sliver of ginger in your mouth at daybreak to ward off miasma and stimulate digestion. Never approach corpses or decay on an empty stomach—this causes a white tongue coating and foul breath. If unavoidable, drink wine first. Longevity masters advise: Rising at dawn, step first with your left foot to ensure safety, repel misfortune, and ward off evil. Paired with the "Seven Stars Pace" (a Daoist practice), this further extends life.

Speak auspicious words at dawn. If hearing ill omens, spit thrice toward their source to neutralize them. Avoid anger in the morning and drunkenness at night, and refrain from distant travel.

Medical texts note: At dawn, the body’s Yang energy stirs; it peaks at noon and wanes at sunset as pores close. Thus, after dark, restrain activity to spare your sinews, and shun damp mist. Disregarding these three temporal rhythms weakens the constitution.

At night, combing your hair while walking keeps malign forces at bay; frequent tooth-tapping repels ghosts. When sleeping, avoid stretching legs straight together to prevent nocturnal emissions. The True Ones teach: Never speak of bad dreams—at dawn, face east, rinse your mouth, and chant: "Ill dreams cling to grass and trees; good dreams turn to jewels," to secure fortune.

A longevity maxim says: "Never face dawn fasting, nor nightfall stuffed" (though adapt to seasonal qi).

The Book of Prolonging Life through Three Primes (Sanyuan Yanshou Canzan Shu) records various taboos and precautions for daily life:

When passing by temples or shrines, one should not enter casually. If entry is necessary, maintain reverence and caution—avoid looking around aimlessly or behaving frivolously. When encountering strange lights or unusual phenomena, remain calm and composed without panic; this ensures safety (citing the example of Cheng Yi). The text also mentions that government offices often witness peculiar occurrences: when someone reported a ghost using a fan, the reply was "It must be feeling hot"; another reported a ghost beating a drum, so drumsticks were handed to it. Fan Zhongyan, while studying at the prefectural school at night, encountered a giant-faced specter—he simply wrote on its face with his brush: "With such a big face, you can't deceive Fan Zhongyan." These examples illustrate that treating strange phenomena with equanimity makes them vanish naturally.

Lighting lamps with animal fat unsettles the spirit (Shen), as it operates under "bloodlight" (ancients associated animal fat with blood Qi). If wounded by blades or swords, never drink water immediately—this may cause fatal bleeding. For unstoppable bleeding, promptly apply hot water-soaked cloth to the wound or immerse it in cold water; chewing parasitic tree leaves into a poultice proves highly effective for stanching blood.

The text further warns: never play wind instruments hung on walls directly, as centipedes may lurk inside (documenting Liu Fuzhen's case where a woman collapsed screaming—a centipedes had entered her abdomen through a fire-blowing tube and was later expelled by administering pig's blood). Ancient wells and deep pits often harbor toxic Qi; never enter recklessly, especially during the fifth and sixth lunar months when danger peaks. Test with chicken or duck feathers: if they spiral without sinking, toxic Qi is present. Additionally, treasure hunting in mountain caves should only occur in the third and ninth months—other months risk fatal encounters as Yin and Yang Qi converge violently in the mountains.

The third volume of The Book of Prolonging Life Through the Three Primordial Energies (Sanyuan Yanshou Canzan Shu) contains dietary principles compiled by Elder Chengxin of Jiuhua Mountain, Li Pengfei.

The Yellow Emperor’s Inner Canon (Huangdi Neijing) states that human vitality stems from dietary moderation. The foundation of Yin energy lies in the harmonious balance of the five flavors (sour, bitter, sweet, pungent, and salty), yet harm to the five organs often arises from their imbalance. The renowned physician Bian Que emphasized that maintaining health fundamentally depends on proper diet—those ignorant of dietary principles struggle to preserve life. The Analects (Lunyu), in its "Village" chapter, meticulously records the sage’s disciplined approach to eating. Unfortunately, later generations pursued fame and wealth, eating irregularly without regard to hunger or fullness. Indulging in luxury, they craved only rich, heavy flavors, ignored seasonal rhythms, and failed to balance the five tastes—inevitably inviting illness. By avoiding these pitfalls, one may attain health and longevity.

Regarding the five flavors: The Inner Canon stresses that careful harmonization ensures upright bones, supple sinews, smooth Qi and blood circulation, and firm skin, naturally leading to a full lifespan. The Huainanzi notes that disordered flavors damage oral health. Tao Hongjing (the Hermit Tao) warned that excessive preference for any one taste harms well-being; prolonged imbalance injures the organs—this follows the natural law of the Five Phases (Wuxing) overcoming one another. Initially imperceptible, such habits eventually manifest as disease.

Specifically:

• Excess sourness harms the spleen, causing muscle atrophy and chapped lips. Thus, during spring’s 72 days, reduce sourness and increase sweetness to nourish the spleen (sour corresponds to Wood, the spleen to Earth; Wood overcomes Earth). Overconsumption of vinegar weakens stomach Qi, damages muscles and bones, and dulls male vitality. Note: vinegar should not be eaten with clams. However, warm vinegar in small doses dispels cold more effectively than wine. The heart, associated with red, benefits from sour foods like adzuki beans, dog meat, plums, and chives.

• Excess saltiness injures the heart, leading to congealed blood and altered complexion. In winter’s 72 days, reduce saltiness and increase bitterness to nurture the heart (saltiness aligns with Water, the heart with Fire; Water overcomes Fire). Overly salty food damages the lungs, resulting in darkened skin and weak sinews. Northwesterners, accustomed to salty diets, often enjoy longevity, whereas southeasterners who overconsume salt tend to die young. Those with coughs or edema must abstain completely—like the hermits of Taoyuan during the Jin dynasty, whose salt-free diets contributed to their long lives.

This health preservation classic primarily discusses the correspondence between diet and the five organs, along with key principles of dietary regulation. Based on the theory of mutual generation and restraint among the Five Phases (Wood, Fire, Earth, Metal, Water), each organ has specific dietary recommendations and contraindications:

The spleen corresponds to the color yellow and benefits from salty foods such as soybeans, pork, and chestnuts. However, excessive consumption of sweet foods harms the kidneys, leading to bone pain and tooth loss. Therefore, during the last eighteen days of each season, one should reduce sweet foods and increase salty foods to nourish kidney Qi (since the sweet flavor belongs to Earth, while the kidneys belong to Water, and Earth overcomes Water).

The liver corresponds to the color green and benefits from sweet foods such as japonica rice, beef, and dates. However, excessive bitter foods damage the lungs, causing dry skin and hair loss. For seventy-two days during summer, one should reduce bitter foods and increase pungent foods to nourish lung Qi (bitter flavor belongs to Fire, while the lungs belong to Metal, and Fire overcomes Metal).

The lungs correspond to the color white and benefit from bitter foods such as wheat, lamb, and apricots. However, excessive pungent foods harm the liver, leading to stiff tendons and brittle nails. For seventy-two days during autumn, one should reduce pungent foods and increase sour foods to nourish liver Qi (pungent flavor belongs to Metal, while the liver belongs to Wood, and Metal overcomes Wood). It specifically mentions that excessive consumption of black pepper damages the lungs, causing bloody vomit, while long-term consumption of chili peppers impairs vision and depletes vital Qi.

The kidneys correspond to the color black and benefit from pungent foods such as millet, chicken, and peaches. However, one should avoid Sichuan pepper during the tenth lunar month, as it harms the heart and blood vessels, leading to forgetfulness.

Regarding dietary habits: Those who understand health preservation drink water before feeling thirsty, but not excessively—overdrinking harms Qi, while drinking only when extremely thirsty damages blood. They eat before feeling hungry, but avoid overeating—overeating harms the spirit (Shen), while eating only when starving damages the kidneys.

Additional dietary precautions: Food left uncovered outdoors may become contaminated by insects, causing throat blisters. Food containers should ideally have wide tops and narrow bases; if not properly sealed, rodent or insect saliva can cause jaundice-like illness (with waxy yellow skin that's difficult to treat). When covering food with copper utensils, copper corrosion mixing with food leads to malignant sores. Northerners with robust digestive systems can tolerate raw or cold foods, but those who have lived long-term in the south should abstain due to differences in climate and water conditions.

This classic text on health preservation primarily discusses dietary principles for nurturing life. In northern regions where the climate and water tend to be cold, those with weak constitutions should pay special attention to spleen and stomach care.

Regarding water hygiene: Water licked by cats or dogs or crawled over by insects can easily cause illness and should be avoided. Drinking tea on an empty stomach in the morning is inadvisable, and one should eat lightly after 3 PM. When extremely hungry, avoid overeating as it leads to food stagnation; when parched, refrain from gulping water which can generate phlegm. After sunset, drinking alcohol immediately after meals may cause nausea.

Emperor Taizong of Tang shared his health preservation insights: maintaining regular, moderate meals kept him in excellent condition. He quoted Laozi's "My life depends on myself, not Heaven" to emphasize self-regulation in nurturing vitality. Tao Hongjing (the Hermit Tao) believed one needn't deliberately seek immortality elixirs—simply moderating dietary desires ensures health and longevity.

Regarding beverage choices: Ordinary fermented drinks (jiangshui) actually benefit health by regulating spleen-stomach function, quenching thirst, and refreshing the spirit. Yet fashionable premium drinks like perilla soup and eaglewood tea prove harmful—prolonged perilla consumption depletes genuine Qi (Zhenqi), eaglewood's dryness harms the spleen, while ophiopogon root's cold nature is overly cooling.

Special warning about alcohol: While small amounts may activate blood circulation, excess numbs nerves and damages stomach-intestines. The renowned physician Bian Que noted chronic alcoholism corrodes internal organs, while the story of Zhou Yi (Eastern Jin scholar) demonstrates good alcohol tolerance doesn't prevent bodily harm.

(Note: The character "冑" means "stomach"; "phlegm accumulation" refers to fluid retention disorders; "acute cholera" indicates severe gastroenteritis; "eaglewood" is a type of incense; "ophiopogon root" refers to the Chinese herb maidong.)

This health preservation classic primarily discusses taboos regarding alcohol, tea, and dietary habits. Let me explain each point in detail:

Excessive alcohol consumption leads to severe consequences. As Bian Que (the ancient renowned physician) warned, some died from ruptured abdomens and rib perforations due to gluttony. White liquor paired with beef or spoiled wine (wine that doesn't cast a shadow when held to light indicates spoilage) should never be consumed. Mixing alcohol with milk causes Qi stagnation. Sacrificial wine that self-ferments to spoilage can be fatal. Eating spicy foods like mustard after drinking relaxes tendons and bones, while sleeping on millet straw after consuming pork may cause leprosy. Alcohol poisoning is the hardest to treat because alcohol accelerates toxin diffusion through the bloodstream.

Drinking cold water or tea while intoxicated directs alcohol toxins to the kidneys, causing heavy sensations in the waist and legs, cold pain in the bladder, and potentially edema, diabetes, and muscle cramps. Fanning oneself while drunk causes purple spots, and drinking water immediately after vomiting triggers wasting-thirst syndrome (similar to diabetes). Though immortals (referring to accomplished Daoist practitioners) don't abstain from alcohol, they only consume small amounts to promote Qi circulation and blood flow, never exceeding moderation.

Tea should be consumed hot and sparingly—ideally avoided. Long-term tea consumption depletes fat reserves causing emaciation and lower abdominal cold deficiency. Only one or two cups after meals are harmless, but drinking tea on an empty stomach causes insomnia, and combining it with leeks creates bodily heaviness. Adding salt to tea is like inviting thieves into the kidneys. Su Shi proposed using strong tea as mouthwash to remove grease and strengthen teeth—tea cleans food residues between teeth without harming gums. Since teeth naturally favor bitterness, this actually reinforces them.

Other dietary prohibitions: Drinking water too quickly causes Qi disorders (respiratory illnesses); feasting near divine statues disturbs the ethereal and corporeal souls; drinking from shaded springs in June invites malaria; cold drinks when chilled damage lungs, causing coughs and nasal congestion; plain water after meals creates water-damp stagnation (similar to edema). Tao Hongjing (the renowned Daoist physician) reminded: Chew food thoroughly—better to eat less than to wolf it down.

These taboos largely reflect Daoist health preservation principles, emphasizing dietary harmony with organ characteristics to avoid disrupting the body's Qi balance.

This health preservation classic primarily discusses dietary taboos and precautions, advising how to extend one's lifespan through proper eating habits.

Regarding eating methods: Meals should be chewed thoroughly and eaten slowly. Overeating in one sitting damages primordial Qi (yuanqi) and harms the heart. Food must be well-cooked and thoroughly chewed—raw meat should never be swallowed directly. After eating, rinse the mouth multiple times to prevent bad breath and dental issues, but avoid using overly hot water, as it can damage teeth.

Concerning food choices: Grilled or roasted foods should be allowed to cool before consumption, as eating them hot harms blood vessels and teeth. Avoid dried meat that has been soaked in water leaking from thatched roofs, as it may cause tumors and malignant sores. Meat contaminated by sweat before consumption leads to skin ulcers, and naturally deceased animals' meat should not be eaten either, as it similarly causes skin ailments. Raw, cold, sticky, or sinewy foods, as well as livestock that died naturally, should all be avoided.

Special warnings: Overeating steamed buns can obstruct Qi flow (though plum blood soup can counteract this), while raw fish easily triggers spleen and stomach disorders. Pickled foods, sauces, animal embryos, greasy dishes, and spoiled foods are all excessively yin and cold in nature—for the elderly, consuming these morning and night is as harmful as handing weapons to an enemy.

On utensil selection: Ivory or metal utensils can detect poison. Tableware made from fish maw will automatically crack upon contact with gu poison (a caution for those traveling to Fujian).

Regarding meal timing: Avoid eating at midnight; ideally, finish dinner before 5 PM. Ancient records in the Rites of Zhou note that music aids digestion because the spleen enjoys sound, but nighttime eating prevents the spleen from functioning properly (especially critical during short summer nights).

Final emphasis: Ordinary people should avoid overeating harmful or nutritionally void foods, while the ill must strictly abstain. This text only documents foods that are outright harmful or of mixed benefit—those purely beneficial are not explicitly mentioned.

Fruit taboos: Raw dates induce dryness, thirst, and bloating; those with weak constitutions or fever should consume even less, as they damage organs and spleen Qi. Eating them with honey harms the five viscera. Soft dates trigger old illnesses like coughing and must not be eaten with crab. Plums erode teeth. Fresh longan should be scalded with boiling water to avoid spleen damage. Lychees are thermally hot—overconsumption causes deficiency-heat, thirst, and nosebleeds. Cherries should not be overeaten during cold or heat illnesses, as they provoke hidden ailments, weaken tendons and bones, and induce vomiting.

This passage discusses dietary restrictions regarding various fruits, explained in modern terms:

Children eating too much can easily develop excessive internal heat. Hawthorn (Crataegus) should not be consumed excessively as it damages teeth and bones. Tangerines are extremely cold in nature, harming the spleen and stomach while potentially triggering old ailments. Though they can promote bowel movements and induce mild sweating, those with deficient cold spleen/stomach constitutions must avoid overconsumption—all citrus fruits share similar properties.

Overeating oranges and pomelos causes mouth numbness and loss of taste. Oranges are warm-natured, but excessive peel consumption damages the liver. When eaten with betel nuts, they cause dizziness and nausea while easily generating phlegm and inducing malaria. Excessive bayberries generate heat while damaging teeth and tendons.

Apricots are heat-inducing—overconsumption harms bones and tendons. Apricot paste can be eaten raw or cooked, but half-ripe ones are deadly. Long-term almond consumption leads to blindness, eyebrow/hair loss, and recurrence of old illnesses. Double-kernel almonds are poisonous and fatal, though finely ground they can treat external wounds.

Peaches trigger erysipelas and damage the stomach. Overconsumption causes heat symptoms, while eating peach kernels after meals followed by bathing leads to difficult urination. Peach and apricot blossoms normally have five petals—six-petaled variants inevitably produce double kernels that are lethally poisonous due to their unnatural state.

Plums, though neutral-natured, induce malaria and deficiency-heat. When combined with honey they damage the five viscera, and must never be eaten near water or with sparrow meat. Floating plums are toxic, while plum kernels eaten with eggs cause indigestion.

Pears are cold-natured—certain varieties like "goose-breast pears" and "purple-flower pears" treat heart-heat, but other types damage spleen/stomach when overeaten. Postpartum women and the injured should avoid them as they cause weakness. While benefiting teeth, pears harm spleen/stomach, especially avoided in January/February (records mention a household growing pear-sized fruits that killed officials who ate them—investigation revealed a venomous serpent beneath the tree).

Excessive kiwifruit causes stomach-cold. Apples (Malus asiatica) when overeaten generate heat, chest congestion, and drowsiness while inducing cold syndromes and sores—their seeds cause agitation.

Pomegranates damage lungs and teeth when overconsumed, while wild pomegranates lack nutrition and cause astringency. Chestnuts are warm-natured—raw ones treat lumbar/leg ailments but cause bloating, better dried or roasted. Overeating leads to qi stagnation, unsuitable for edema patients. Raw chestnuts should be roasted to eliminate woody qi—children struggle to digest cooked ones which easily cause bloating.

Persimmons are cold-natured (dried ones colder)—overeating causes stomach pain, with raw ones being even colder.

This passage on health preservation taboos primarily discusses food combinations and dietary prohibitions, which can be understood in modern terms as follows:

Eating persimmons with crab can cause vomiting. Consuming persimmons while drinking alcohol may trigger angina or even prove fatal, while also worsening intoxication. A variety called "ta persimmon" tends to generate phlegm-dampness; eating too many dried ones can induce wind-fire symptoms and has poor flavor. Another variety, bei persimmons, are cold in nature—eating them with crab leads to abdominal pain and diarrhea.

Excessive wine consumption harms the eyes, and drinking beneath grapevines risks insect droppings falling into the drink. Raw ginkgo nuts cause ganji (digestive stagnation); cooked ones are beneficial but must not be overeaten—excess causes bloating. Legend states consuming a thousand nuts proves fatal, as they bloom nocturnally and embody yin-cold energy (some who ate them as staple food died overnight).

Water chestnuts, being cold-natured, damage spleen and stomach. Overconsumption depletes yang qi, causing impotence and difficult digestion leading to bloating (relievable with ginger wine). Eating raw in July breeds parasites. Arrowheads, extremely cold, aggravate chronic conditions and cause bloating—children eating them in autumn suffer lower abdominal pain. Pregnant women must avoid them; southerners frequently consuming them develop beriberi and skin diseases while harming teeth and complexion.

Water caltrops share similar properties with arrowheads. Raw foxnuts may induce wind-cold and spleen damage—though hard to digest, they nourish kidney essence. Excessive lotus root consumption cools the body but prevents epidemics. Postpartum women uniquely may eat lotus root (as it activates blood), but must avoid other raw-cold foods.

Muskmelons aggravate old ailments—overeating causes genital eczema, sores, deficient heat, diarrhea, and fatigue (small amounts are harmless). Summer overconsumption causes diarrhea; late autumn eating leads to stubborn dysentery (from yang qi damage). Melons worsen beriberi. May's sunken melons are toxic—overeating causes jaundice and nullifies medicine. Double-stemmed melons are poisonous; eating them with oily pancakes causes illness (an official who ate melons in summer suffered sudden autumn paralysis, recovering only after treatment).

Though watermelon relieves summerheat, northerners with robust constitutions may eat more, while southerners with weaker builds shouldn't—otherwise incurable cold syndromes like cholera may develop. Papayas, warm-natured, are best when thin-skinned, reddish-yellow, fragrant, sweet-sour (not astringent) with pointed, square seeds—they strengthen spleen but harm teeth. Rounder papayas are inferior.

This passage primarily discusses the harms of excessive consumption or improper food combinations, along with various dietary taboos. Here's the modern interpretation:

Overindulging in sugarcane may cause nosebleeds, and exposure to smoke from burning sugarcane residue can impair vision. Brown sugar, being cold in nature, can induce heart pain when consumed excessively. Particularly avoid pairing it with crucian carp (may cause parasites), mallows (may lead to internal blockages), or bamboo shoots (may cause indigestion and bodily heaviness).

Special cautions for children: Excessive sweets damage teeth and increase risk of pinworm infestation. Too many plums cause abdominal distension, especially harmful for the sick. Overconsumption of quinces harms teeth and joints. Pine nuts in excess may induce heat toxins. While walnuts are neutral in nature, excessive intake promotes diuresis, may cause eyebrow loss, and could trigger wind-phlegm symptoms with nausea—consumed with alcohol in excess may even lead to bloody sputum.

Avoid unripe fruit pits in May as they may cause boils. Fruits fallen on the ground during summer/autumn may have been contaminated by poisonous insects, risking fistula disease if eaten. Never consume spoiled fruits stored for days. All double-kernel fruit pits are toxic—antidote: ingest powdered burnt pork bones with warm water.

Regarding grains: Raw rice is cooling, cooked rice heating, but half-cooked rice most damages spleen/stomach. Never pair with cockleburs or horse meat (causing heart pain and relapse of old ailments respectively). Pregnant women eating glutinous rice with meat harms the fetus; long-term raw rice consumption breeds tapeworms (Taenia) and weakens limbs. Glutinous rice's cold nature obstructs meridians, causing drowsiness—consume sparingly.

Millet provokes old illnesses; long-term consumption clouds the mind; children eating too much develop walking difficulties. White millet in excess causes bodily heat and irritability; never combine red millet with honey. Combining any of the five millet types with mallows creates stubborn ailments, though beneficial for lung patients medicinally. Habitual snacking on raw grains causes "grain accumulation" (similar to chronic indigestion).

Wheat thrives when autumn-sown and summer-harvested. Northern frost-rich regions produce non-toxic flour, while southern low-snow areas' wheat may be harmful. Maltose stimulates appetite but damages the spleen when overeaten. These dietary prohibitions largely originate from ancient medical experience, with some principles aligning with modern nutrition science.

Wheat has a warm and heating nature, and excessive consumption can easily induce wind-heat symptoms. If one feels poisoned after eating wheat products, taking three to five Sichuan peppercorns (huajiao) with wine can alleviate the discomfort.

Barley is beneficial for long-term consumption, but eating it raw can harm the spleen and stomach. Malt (sprouted barley), if consumed regularly, depletes kidney Qi (vital energy) and should not be eaten in excess.

Naked barley (a type of barley) is widely cultivated in Sichuan, while people in Shandong and Hebei sow it only in the first month of the lunar year. Those with a cold and deficient constitution should avoid it.

Buckwheat has a cold nature and is difficult to digest. Prolonged consumption can lead to dizziness and wind-related disorders. Eating it with pork eight or nine times may trigger heat symptoms, causing hair and eyebrow loss.

After eating millet (xiaomi), one should avoid almonds, as the combination can induce vomiting and diarrhea. Broomcorn millet (jizi) tends to provoke various illnesses and is considered the lowest quality among the eight staple grains. It must not be consumed with Sichuan aconite (chuanfuzi).

Aged millet and non-glutinous rice (jingmi) have a cold and cooling nature, and frequent consumption may cause diarrhea. If preserved meat stored in a rice jar for over three months is unknowingly eaten, it can harm health.

When using mung beans for medicinal purposes, the skins should not be removed, as peeled beans may cause Qi stagnation. Adzuki beans (chixiaodou) promote urination, but long-term consumption weakens the body, darkens and dries the skin, depletes bodily fluids, and leads to heaviness.

Eating red and white beans with salted fish may induce wasting-thirst disorder (similar to diabetes). Fava beans (qingxiaodou) consumed with salted carp can cause liver disease, potentially developing into wasting-thirst within five years.

Fermented black beans (douchi) made from various legumes are extremely cold in nature. Soybean sprouts and fermented sauces are neutral but may cause bodily heaviness if overeaten. Those consuming soybean flour should avoid pork.

Feeding fried beans to children aged 1–10 alongside pork over time can lead to fatal Qi stagnation. There was a case where someone suffered poisoning from eating tofu, and doctors failed to cure them. Later, they encountered a tofu maker's family quarrel and learned that the wife had mistakenly poured radish soup into the pot, ruining the tofu. The doctor then used radish soup as a medicinal guide to treat the poisoning.

Authentic fermented sauce should be made from beans. Nowadays, sauces made from wheat flour weaken medicinal efficacy (Confucius said, "One should not eat without the proper sauce"—the five organs favor suitable seasonings, which is also a principle of health cultivation).

Sesame oil pressed while hot after roasting is only suitable for lamps; it must be further refined before consumption. Oil induces cold syndromes, damages bone marrow, and obstructs the spleen. Overnight oil can cause Qi stagnation. Those with dental or spleen-stomach ailments should avoid aged oil; daily cooking should use freshly rendered oil.

Eating roasted black sesame seeds can help prevent wind disorders (such as strokes). Those suffering from wind disorders who consume them daily will find their gait steadier and their speech free from stuttering.

White sesame, also known as foreign sesame (huma), can serve as a nutritional substitute for grains. When eaten raw, it has a cold nature, but roasting it makes it hot in property. However, excessive consumption may trigger cholera or convulsions—care should be taken to distinguish it from a bitter-tasting variety. Overeating sesame kernels can damage the blood vessels, leading to involuntary seminal emission in men and abnormal vaginal discharge in women.

Regarding vegetables:

Mallow (kui) is considered the foremost among the five major vegetables and is sown in autumn. Early-sown varieties that bear seeds by spring are called winter mallow—their tender shoots are toxic and harmful. With a cold nature, even when eaten warm, it can induce restlessness and easily provoke wind disorders. Consuming frostbitten mallow raw worsens the five types of phlegm-retention diseases, with severe cases causing vomiting. Eating it with carp is harmful, and raw mallow should be avoided year-round as it is hard to digest and may trigger old ailments. It should also be avoided while taking medicine, as it may induce mania. Hollyhock (wukui) should not be eaten long-term, as it dulls mental sharpness. Consuming marsh mallow (rongkui) with bird meat may lead to a sallow complexion.

Eating raw scallions with honey causes diarrhea, while roasted scallions with honey may lead to fatal bloating. Paired with white dog meat, it can induce bleeding from the seven orifices. Those with qi disorders should avoid overconsumption, as it may cause rebellious qi to assail the heart. Eating scallions in the first lunar month may trigger facial rashes. While their main benefit is inducing sweating, excessive intake clouds the mind.

Long-term consumption of shallots (hucong) weakens the spirit (shen), impairs memory, harms vision, and exacerbates chronic illnesses—those with halitosis or tooth decay should especially limit intake. Eating them with black carp may breed parasites.

Chives, known as "herbaceous stalactites," can be eaten by the sick. However, overconsumption causes mental confusion and blurred vision—they are particularly contraindicated with alcohol and should never be paired with honey. Unharvested yellow chives are hard to digest, while chive flowers easily induce wind disorders and should be avoided after the Qingming Festival. Those with cold stomach conditions will find symptoms aggravated, and frostbitten chives must not be eaten as they provoke phlegm-retention and vomiting.

Eating chives in the fifth lunar month depletes primordial qi (yuanqi). They should never be consumed with beef, as this forms abdominal masses. Avoid them for ten days after febrile illnesses, as they cause fatigue and weakness—scallions should also be avoided during this period.

Wild leeks (jiao tou) strengthen the body, but eating them raw increases nasal discharge and saliva. Paired with beef, they form masses; they should not be eaten raw in the fourth month or throughout winter, as this easily induces excessive mucus.

Long-term garlic consumption damages the liver, impairs vision, and weakens sexual function. When boiled, it should not be paired with black carp (possibly referring to a specific incompatibility).

This passage on health preservation taboos primarily discusses dietary prohibitions concerning various vegetables and fish, along with illnesses that may arise from improper consumption:

Regarding fish: Yellowed salted fish and sashimi can harm the body, especially when eaten raw or undercooked. Consuming spoiled fish in summer may cause poisoning, and one should avoid drinking cold water simultaneously. Eating fish during the fourth and eighth lunar months damages the spirit (Shen) and weakens the gallbladder, potentially leading to asthma, palpitations, abdominal distension, or even intestinal ulcers. Northerners, due to their stronger constitutions, experience milder symptoms from such consumption.

Concerning wild garlic (Allium macrostemon): Frequent consumption is discouraged. Eating it with raw fish causes shortness of breath (Qi deficiency) and severe testicular pain. March consumption harms primordial Qi (Yuanqi), while post-illness consumption followed by sexual activity may prove fatal.

About coriander (Coriandrum sativum): Long-term use leads to forgetfulness, bad breath, and aggravated beriberi. Eating its roots triggers old ailments.

Regarding water pepper (Polygonum hydropiper): Excessive consumption of soaked tender shoots causes vomiting, damages Yang Qi, and harms the heart and bone marrow. February consumption injures the kidneys, while combining with raw fish results in Yin Qi damage and intense testicular pain.

Other vegetable warnings: Overeating daylilies (Hemerocallis fulva) causes dizziness resembling drunkenness; Chinese cabbage (Brassica pekinensis), being cooling, suits those with heat constitutions; mustard greens (Brassica juncea) in excess easily induce wind disorders and cause illness when eaten with rabbit meat; turnip (Brassica rapa) roots cause bloating when overconsumed, though their seeds produce oil for treating graying hair; radishes (Raphanus sativus) shouldn't be eaten raw by the weak; post-illness consumption of raw greens leads to bluish limb swelling; all vegetables are prohibited on the fifth day of the fifth lunar month.

Special notes: All vegetables must be thoroughly cooked—those touched by eave-drippings become toxic; October frostbitten vegetables cause dull complexion, back pain, and malaria outbreaks; shepherd's purse (Capsella bursa-pastoris) shouldn't accompany wheat products; amaranth (Amaranthus tricolor) is forbidden during medication; prolonged violet (Viola verecunda) consumption induces edema; rapeseed (Brassica napus) aggravates lumbar-leg disorders and triggers mouth ulcers/toothache.

These taboos reflect ancient empirical observations about dietary combinations, seasonal prohibitions, and constitutional differences.

This scripture primarily discusses dietary taboos concerning various vegetables, explained in modern terms as follows:

Deer horn vegetable (a type of seaweed) may trigger chronic illnesses and damage meridians with prolonged consumption, causing poor complexion. Spinach is relatively neutral for northerners who consume meat and wheat-based foods, but tends to induce coldness in southerners who eat fish and rice. Overconsumption may chill the intestines, and long-term intake could lead to weak legs and lower back pain.

Water shield has slippery properties—excessive eating may aggravate hemorrhoids and epidemic diseases due to potential mercury residue. In the seventh lunar month, these plants often carry wax insects that may cause cholera if ingested, so they should be avoided.

For celery, choose highland varieties; water celery (the dark, slippery type) is preferable while red celery is harmful. Raw celery's cold nature combined with vinegar may damage teeth (legend says dragon essence sometimes mixed with celery during spring and autumn periods—accidental consumption causes abdominal distension requiring sugar-induced vomiting). Endive benefits the heart in summer but should be avoided by silkworm-rearing women.

Lettuce's cold nature harms eyes with prolonged use. White lettuce's extreme coldness causes abdominal chill—forbidden for postpartum women and promotes parasites when eaten with malt sugar. Endive shouldn't combine with honey. Chard (similar to spinach) causes qi stagnation when overeaten, inducing diarrhea in cold-constitution individuals.

Alfalfa clears intestines but causes diarrhea with honey and leads to weight loss in excess. Bracken fern consumption weakens legs, causes impotence, blurred vision, and hair loss over time—children's growth may be stunted, cold-constitution people experience bloating, and raw consumption may form parasites (records show someone vomiting small snakes after eating raw).

Eggplants are extremely cold—frail individuals risk aggravating old ailments. Cooked eggplants in moderation are tolerable but unsuitable for cold-constitution people, while autumn consumption harms eyes. Cucumbers (originally called "barbarian melons") are generally unhealthy, worsening beriberi symptoms.

White melons may cause sores, leg weakness—harmful to children and convalescents, incompatible with cheese, and induce heart pain when eaten空腹. Unripe melons impair memory. Winter melon promotes damp sores and jaundice in excess—post-frost varieties (ninth month) may cause alternating chills and fever, initial consumption might induce vomiting, and cold-constitution individuals experience further weakness.

Gourds can impair eyesight and are particularly unsuitable for elderly consumption, as their accumulated toxins may trigger malaria in autumn. All bitter-tasting gourds are toxic, and those with two stems or navels are harmful to humans.

Calabash (a type of gourd) has a cold nature; excessive consumption can cause severe illness, deplete vital Qi (vital energy), lead to beriberi and edema, and make it difficult to expel internal toxins. Overeating bottle gourds may induce vomiting.

Taro, also known as "earth mushroom," comes in purple and white varieties. It is safe to eat in winter but should be avoided in other seasons. Yam (Dioscorea) also has purple and white types and is superior to taro, with the smaller variety, commonly called "mountain yam," being the best.

Konjac has a cold nature, so those with deficient-cold constitutions should consume it sparingly. However, there is a documented case of a tuberculosis patient who believed himself incurable but unexpectedly recovered after greedily eating konjac prepared by a neighbor. Several others with mumps were also cured after being advised to consume more konjac.

Excessive bamboo shoot consumption can cause Qi stagnation and cold-induced masses. Water bamboo shoots have a slippery nature and should not be overeaten. Eating ginger on the Double Ninth Festival (9th day of the 9th lunar month) harms the Shen (spirit) and shortens lifespan. Pregnant women who consume too much dried ginger may develop internal heat and excessive thirst. Overeating Chinese toon shoots can cause mental confusion, while excessive elm seeds may induce fever and heart pain.

Among fungi, those growing on the ground are called "jun," while those on wood are categorized as "ru," "wood ear," or "xun." Newly picked fungi with the following traits are highly toxic: surface fuzz, lack of veining at the base, nighttime luminescence, resistance to cooking, rapid decay without insect damage, inability to cast a shadow when cooked, or contamination by poisonous insects or snakes in spring or summer. Mistakenly eating toxic fungi often leads to death from uncontrollable laughter. In emergencies, dig a pit, fill it with water, stir, and drink the clear upper layer.

Wood ears growing on paper mulberry, locust, elm, willow, or mulberry trees are edible. Those harvested in winter or spring are non-toxic but should still be consumed in moderation. Fungi with the toxic traits mentioned earlier are invariably fatal. Additionally, red fungi with caps that remain upright and uncurled, as well as wild field fungi, are poisonous and may cause cold syndromes, hemorrhoids, lethargy, and weakness.

Chinese artichoke (Stachys affinis) should not be eaten raw or in excess, as it may harbor tapeworms. Consuming it with fish causes stomach discomfort. Eating Zanthoxylum in the sixth or seventh lunar month harms the spirit. Excessive consumption of garland chrysanthemum leads to bloating. There have been fatal cases of poisoning from dill root.

Among fowl, yellow-feathered chicken suits the elderly, while black-boned chicken nourishes blood and benefits postpartum women. Eating multicolored-feathered chickens induces mania. Chickens with six toes, white-headed domestic fowl, or wild birds laying eggs marked with the character "八" (eight) or found dead with stiff legs are all harmful to humans.

This passage on health preservation taboos primarily concerns precautions when consuming poultry:

Black-bone chicken should not be eaten with carp, as this combination may cause toxic sores. Consuming chicken on the Bingwu day (a specific fire-element day in the Chinese calendar) is prohibited. Eating sun-dried chicken in the fourth month may cause armpit abscesses and physical weakness in both men and women. Eating chicken in the eighth month damages one's vital essence (Jing) and spirit (Shen), while excessive consumption by pregnant women may cause fetal illnesses. Pregnant women eating too many eggs may result in mute offspring.

Eggs tend to trigger wind-related and Qi-related disorders. Eating them with turtle meat is harmful, with dog liver causes poisoning, with dog meat leads to diarrhea, with fish broth induces heart disease, and with otter meat may cause "fleeing corpse" syndrome (a parasitic-like illness). Egg whites consumed with onions or garlic cause panting, while eating with raw onions and dog meat results in bloody stool. Regular consumption of chicken or duck eggs may lead to cataracts.

Leftover chicken improperly stored may attract centipedes—consuming it without thorough reheating is highly dangerous. Pheasant, belonging to the fire-element fowl, damages the body when eaten excessively. Long-term consumption causes emaciation, while eating it in spring or summer easily induces poisoning. Only consumption between the ninth and eleventh months provides mild nourishment—eating it in other months may cause hemorrhoids. The eighth month prohibits pheasant consumption, as does the Bingwu day (due to its fire-element nature). Eating pheasant in the fourth month causes Qi rebellion. Consuming it with walnuts or mushrooms leads to bloody stool, while those with dysentery should avoid combining it with buckwheat noodles (which may breed parasites). It must never be eaten with onions (causing tapeworms).

Ducks shouldn't be eaten in the sixth month. Black ducks nourish Qi but have a slippery nature that easily causes diarrhea. Those with beriberi or pregnant women (excessive consumption may cause difficult labor) should avoid overconsumption. Wild ducks must not be eaten with walnuts or wood ear mushrooms (ancient texts record cases of chest distension, flushed face, and vomiting of duckling-like substances from improper consumption).

White goose meat has cold properties—overconsumption causes diarrhea or recurrence of old illnesses. Goose eggs should also be eaten sparingly. Gray geese tend to cause suppurative sores. Quail shouldn't be consumed before the fourth month—eating it with pork liver causes dark spots, while combining with mushrooms induces hemorrhoids.

The partridge is considered a spiritual bird—only one may be taken monthly for deity offerings, and naturally deceased ones shouldn't be eaten. Overconsumption of pheasant in one sitting easily causes hemorrhoids, while eating it with buckwheat produces sores. Similar taboos apply to bamboo partridges and other fowl.

This passage primarily discusses ancient dietary taboos and medicinal knowledge concerning poultry and meat, illustrated through historical cases:

The Southern Tang chancellor Feng Yansi suffered from chronic headaches that wouldn't heal. Imperial physician Wu Yanshao, upon questioning the chef, discovered Feng regularly consumed francolin and pheasant. He cured him with licorice root decoction, as these birds often feed on toxic aconite and pinellia tubers, which licorice can counteract. In another case, magistrate Yang Lizhi developed festering sores from eating francolin during his southern posting. The renowned physician Yang Jilao prescribed one jin (approx. 500g) of raw ginger, applying the principle of using ginger to neutralize pinellia's toxicity.

The text then enumerates various avian prohibitions:

• Regular consumption of mandarin duck meat may cause leprosy
• Sparrow meat shouldn't be eaten with plums and is forbidden for pregnant women
• While turtle doves are nourishing, they reduce medicinal efficacy for patients
• Crow meat is bitter and unpalatable
• Legend claims eating swallow meat makes one vulnerable to flood dragon attacks
• The cuckoo's cry is inauspicious—hearing it for the first time foretells separation, while mimicking its call may cause blood vomiting

Regarding quadrupeds, pork receives particular attention:

Though versatile, excessive pork consumption causes sudden weight gain and triggers "wind syndromes" (TCM conditions like stroke, dizziness, or limb numbness). Those with poor blood circulation or weak tendons/bones should especially limit intake. While pork kidneys regulate kidney Qi (vital energy), overconsumption damages them and may impair fertility long-term. Pork fat lamps harm eyesight, while combining pork liver/lungs with raw fish causes toxic sores. Pork brains deplete Yang energy, affecting sexual potency.

A final culinary tip suggests boiling pork with galangal, mulberry root bark, Chinese honeylocust, and beeswax—traditional detoxifying aromatics.

(Note: "Wind syndromes" refer to TCM conditions involving pathogenic wind; "metal wounds" denote injuries from sharp implements)

This scripture primarily discusses dietary prohibitions concerning various meats, with particular emphasis on harmful food combinations that may trigger illnesses.

Pork should not be consumed with ginger, as doing so may induce wind disorders (similar to stroke symptoms). Middle-aged individuals with weakened Qi (vital energy) and blood may develop dark facial spots from eating pork. Wild boar hooves that appear bluish must not be eaten, and excessive consumption of river pork can cause bodily heaviness.

Mutton is inherently heating—those recovering from illness should avoid it for a hundred days, as it may lead to bone-steaming disease (a feverish condition resembling tuberculosis). Mutton must not be paired with salted fish, raw fish, or cheese. Sheep hooves containing white pearl-like nodules, called "hanging sinews," may trigger epilepsy if consumed. Sheep liver should not be eaten with pork, plums, or adzuki beans, and pregnant women who consume it risk harming the fetus. Sheep brains can damage a man’s Jing (essence), impairing fertility; if eaten at all, they should be balanced with vinegar.

When boiling mutton, avoid using copper vessels, as this may harm reproductive health in both men and women. Eating mutton in the sixth lunar month is inadvisable, though it can otherwise nourish Shen (spirit). Combining sheep liver with adzuki beans may harm eyesight. Long-term consumption of mutton without seasoning may lead to skin diseases or relapse of old ailments.

Beef from diseased cattle must not be eaten, as it can cause intestinal abscesses or severe diarrhea. Consuming beef during the twelfth lunar month (the month of the Ox) harms one’s Shen. Beef should not be paired with horse or pork, as this may induce bodily itching or parasitic infections. Beef roasted over mulberry wood might harbor parasites. Those with cold-deficient constitutions should avoid beef, though the five viscera of cattle can nourish the corresponding human organs. Frequent consumption of sandy-textured beef may reactivate chronic illnesses.

Horse meat from animals that died naturally is extremely harmful and must never be eaten—it will cause severe diarrhea.

This scripture primarily discusses the dietary taboos and precautions regarding various meats, which can be summarized in modern terms as follows:

Regarding horse meat: Before consumption, horse meat must be thoroughly soaked, rinsed, and boiled until completely tender to remove all traces of blood. The same applies to fatty horse meat—failure to do so may leave toxins that can cause abscesses. Horse meat is best consumed boiled; other cooking methods make it difficult to digest and should not be eaten in excess. Pregnant women must avoid it entirely. Eating horse meat in the fifth lunar month harms the spirit (Shen). If restlessness occurs after consumption, clear wine can alleviate it, while turbid wine worsens the condition. Never eat horse meat with aged granary rice, as this may trigger a sudden severe illness (with a nine-in-ten fatality rate). Combining horse meat with ginger induces coughing, dysentery, and chest congestion.

Horse blood is toxic, but fine wine can counteract its poison. The black hooves and brain marrow of white horses cause madness, while meat from horses with blue hooves is inedible. Meat from horses with black spines or striped legs must also be avoided. Darkened meat beneath the saddle that has seeped into the flesh harms the five viscera. Using a horse skull as a pillow causes insomnia. Never consume meat from a dead horse with granary rice—this invites various illnesses. Accidental ingestion of horse sweat or hair mixed into food is harmful. Those with sores must avoid contact with horse sweat or meat juices, as the horse’s odor or hair can be fatal. Horse sinews collected outside the twelfth lunar month should be dried over fire. Horse hearts cause diarrhea and are forbidden for pregnant women. After the fifth month, avoid horse hooves and eyes. Horse meat must never be eaten with venison.

Regarding donkey meat: Donkeys that died of illness are inedible. Donkeys and horses gestate for twelve months to produce mules, which are sterile. Pregnant women eating donkey meat may disturb fetal Qi. Donkey meat easily triggers wind syndromes (similar to allergies), especially fatty cuts. Never drink alcohol while eating donkey meat—this is lethal. Donkey urine is mildly toxic; intake should not exceed two ge (about 200 ml).

Dairy products: Refined ghee (Tihu) and酥酪 (sour milk curds) are beneficial and harmless.酪 (cheese) made from cow, sheep, or horse milk, if consumed with vinegar immediately, causes bloody urine. Cow’s milk must not be eaten with sour foods, as this forms hard masses. Donkey milk is too cold in nature for cheese-making. All milk and cheese from cows or horses must not be eaten with raw fish, as this creates fish concretions (parasites). Frying fish with cheese leads to cholera.

Regarding dog meat: Excessive roasted dog meat consumption causes wasting-thirst syndrome (diabetes). White dogs that die naturally with their tongues untucked are toxic. Lean dogs are sick and inedible. Pregnant women eating dog meat risk bearing mute children; avoid it in the ninth month to nurture the spirit (Shen). Dog meat with garlic depletes Qi and blood. Eating unbled meat is pointless—dog blood combined with jellyfish causes strange illnesses. Rabid dogs with red noses and aggressive behavior are about to turn violent; their meat is poisonous.

This passage on health preservation taboos primarily discusses dietary restrictions regarding various game meats, incorporating the medical perspectives of Sun Simiao (the Immortal Sun) and Master Hu:

During late spring and early summer, special caution must be taken against rabid dog attacks. It's advisable to carry a stick for protection. If bitten, immediately apply moxibustion treatment to the wound, performing it once daily for 120 consecutive days. Simultaneously, consume leek soup daily. This disease is extremely severe yet often overlooked.

Regarding venison and roe deer meat: These two animals are not among the twelve zodiac signs. Eating venison in May harms the Shen (spirit), and venison with leopard-like patterns is toxic. Note that deer antler velvet must not be smelled directly, as small insects may enter the nasal cavity causing difficult-to-treat "insect obstruction" disease. Venison weakens male potency, while white deer meat cooked with cattail shoots induces malignant sores. Venison is prohibited during medication as the detoxifying herbs deer consume counteract medicinal effects.

Other game meat prohibitions:

• Roe deer meat: Superior to mutton when eaten from August to November, but causes Qi stagnation if consumed in other months
• Muntjac meat: Overconsumption triggers old illnesses, as muntjacs frequently eat venomous snakes
• Elk meat: Incompatible with pheasant, shrimp, raw vegetables, plums and prunes when consumed together
• Rabbit meat: Causes cleft lip in pregnant women; elixir practitioners may eat small amounts in August and November, but overconsumption damages Yang Qi; worsens pox eruptions
• Tiger meat: Prohibited in January; meat from tigers killed by poisoned arrows is toxic
• Jackal meat: Sour-tasting and unsuitable for consumption; depletes fat reserves causing emaciation
• Otter meat: Only suitable for heat syndromes; weak constitutions suffer Yang Qi damage
• Elephant meat: Causes bodily heaviness
• Bear meat: Prohibited for chronic illness sufferers; forbidden in October

Special note: Raccoon bones can treat consumptive diseases, while otter liver treats infectious consumption (contagious phthisis) - these being among the few medicinal applications.

This passage on health preservation taboos primarily discusses precautions regarding meat and fish consumption, warning about circumstances when these foods may endanger health:

Concerning animal meats:

Using animal fat for lamps can cause blindness if the smoke enters one's eyes. Musk deer meat must not be eaten with swan meat, as this combination causes abdominal masses (jia) - since musk deer ingest snake venom when eating snakes in summer. Prolonged exposure to musk fragrance may induce strange illnesses, as its penetrating aroma enters the body's orifices, and the musk contains white worms that can invade the brain causing scalp sores. Children's intellectual development may be impaired by close contact with apes.

Hedgehog meat is edible but its bones must be avoided as they cause emaciation and physical shrinkage. Various hazardous meats include: meat juices stored in sealed containers without ventilation, greenish animal livers, red-footed beasts, fork-tailed animals, meat that doesn't shrink when cooked, undercooked meat, raw meat that contracts, beasts that died facing north, sacrificial meat that moved spontaneously, poultry that died without visible wounds, meat contaminated by dog's dewclaws, meat with rice-like spots, mutton jerky stored over three months (developing horsetail-like worms), or meat preserved too long in rice containers - all potentially fatal.

Meat jerky that won't dry in sunlight or burn in fire becomes indigestible when eaten. Livers from animals that died naturally are inedible, and fresh meat that appears to "breathe" damages primordial qi. Meat or liver that doesn't collect dust when dropped must be avoided. All animal hearts harm the human heart, and all blood products damage blood. Animal brains and spleens are universally inedible. Meat should be thoroughly cooked and cooled before consumption, followed by mouth rinsing to prevent tooth decay. Overconsumption of meat can be counteracted by drinking meat broth to aid digestion. The third day of the third lunar month prohibits organ meat consumption.

Regarding fish:

Grass carp with sores must be avoided. Carp easily induces wind-heat symptoms - always remove the two tendons along its spine and black blood before preparation. Carp from mountain streams often contain toxins in their heads - avoid eating the head. Valley stream carp is inedible, and the fifth day of the fifth month prohibits carp consumption. Eating carp after epidemics causes relapse and death. Those with abdominal masses must abstain from carp. Combining carp with wheat paste causes mouth ulcers, while pairing it with perilla breeds toxic sores. Preserved carp (zha) shouldn't be eaten with adzuki bean leaves, and consuming carp after cinnamon causes abdominal masses. Fish roe and pork liver are incompatible, as are crucian carp combinations.

Finally citing the Suwen and Rihuazi's perspectives: Fish generally have heating properties that induce wind disorders (though Rihuazi considers carp cooling), but wind disorder sufferers must particularly avoid fish roe or risk severe consequences.

This passage primarily discusses dietary taboos and precautions regarding various types of fish, expressed in modern terms:

The mandarin fish (Chinese perch) has twelve venomous dorsal fin spines, with one becoming particularly toxic each month—potentially fatal—all of which must be removed. It records how Suzhou resident Wang Shun nearly died from a fish bone lodged in his throat, saved only when fisherman Zhang Jiu administered powdered olive kernel mixed with water. This works because fish avoid boats with olive wood oars, indicating their aversion to this wood.

The white fish (culter alburnus) tends to trigger skin sores and boils, especially dangerous when consuming it with existing pustules. Raw fish shouldn't be eaten over extended periods as it causes illness. In spring, avoid eating crucian carp heads which may contain parasites. Never consume them with monkey meat, pheasant, pork liver, nor pair them with pork or garlic (which generates heat). They combine well with ginger sauce (neutralizing cold nature), but become lethal when eaten with dwarf lilyturf roots, and cause edema with mustard greens.

Those taking white atractylodes rhizome (a Chinese herb) must avoid black carp and its fermented products (zha), which also shouldn't be eaten with raw leeks, garlic, or wheat paste. Yellow croaker provokes bloating, ulcers, and wind disorders—consume sparingly, and pairing with buckwheat causes voice loss. Yellow catfish must never combine with schizonepeta herb (jingjie), or it induces vomiting blood; yellow earth clarification water serves as antidote for poisoning.

Though delicious, reeves shad triggers infant malnutrition (ganji). Bream (Wuchang fish) is forbidden for dysentery patients. Red-eyed, red-whiskered catfish are poisonous and incompatible with venison or gill-less fish. Though tasty, sturgeon provokes medicinal toxicity—its preserved form is also unhealthy, prohibited for elixir takers as it causes fatigue, scabies, childhood emaciation/coughing. Long-term consumption may trigger sudden heart pain, while pairing with dried bamboo shoots causes paralysis.

Improperly prepared pufferfish (globefish) proves fatal—especially red-eyed specimens carrying extreme toxicity causing instant death (antidotes: olive or reed rhizome juice). Sea bass is relatively safe but overconsumption causes abdominal masses and abscesses—never combine with cheese. Loach and eel shouldn't pair with dog meat or blood. Eating eel during convalescence may trigger cholera, and April consumption also carries risks.

This passage primarily discusses dietary taboos and potential harms associated with various aquatic products:

Both yellow eels and white eels (a type of freshwater eel) can trigger wind disorders, and consumption by pregnant women may cause fetal illness. Special warning: eels without gills or with spotted backs can be fatal. According to The Thatched Pavilion's Casual Talks, large eels and soft-shelled turtles are toxic, and excessive consumption may prove deadly. There was an official in the capital who nearly died from vomiting and diarrhea after indulging in eel consumption.

Long-term consumption of cuttlefish may lead to infertility, while snakehead fish can disrupt the purity of spiritual practitioners. Although eels are toxic, they can treat consumption (illustrated by the case of Magistrate Chen's daughter who was cured of consumption by a fisherman's eel soup).

Excessive horseshoe crab consumption may cause coughing and skin diseases, with the smaller "ghost horseshoe crab" being particularly harmful. If hair gets mixed into fermented fish (yuzha) and is accidentally consumed, it can be fatal. Yellow catfish combined with schizonepeta herbs causes poisoning. The smoke from fish oil lamps can blind people, as can animal fat lamps.

Special warnings: Scale-less fish should never be eaten with schizonepeta; gill-less fish cause madness; fully-gilled fish cause abscesses; and consuming gall bladder-less fish for three years leads to male impotence and female infertility. Avoid fish with: white dots forming a pearl-like line to the dorsal fin, white eyes, black spots on the back, or red scales covering closed eyes.

Fish tails with many bones easily choke throats; fish roe combined with pork liver causes illness; pregnant women eating dried fish affects the fetus; fish broth shouldn't accompany cormorant meat. Avoid fish consumption on the third day of the third lunar month.

Soft-shelled turtles are cold-natured and toxic—unsuitable for those with consumption or tumors. When cooking, first chop the shell and boil it together, then remove the shell before eating to reduce cold properties. Toxic turtles have: sunken eyes, red feet, a plastron with "king" character patterns, or three legs.

This passage on health preservation taboos outlines several dietary prohibitions and antidotes concerning aquatic foods:

Regarding snakes, those with coiled patterns on their underside must not be eaten. If pregnant women consume eggs, rabbit meat, and mustard sauce together, it may cause the fetus to develop a short neck. On special Daoist calendar days known as Liujia days, one must avoid eating turtles and other armored creatures as they harm the Shen (spirit). There are recorded cases of poisoning from turtle cooked with mint, while combining turtle meat with amaranth can form "turtle concretions" (tumor-like growths) in the abdomen. One medical case describes both master and servant developing such concretions - after the servant died, an autopsy revealed live white turtles in his abdomen that dissolved when doused with white horse urine; the master drank this liquid and recovered.

Crabs that haven't endured frost are highly toxic, and poisoning from water hemlock consumption can be fatal if untreated. Avoid crabs with these characteristics: star-like spots on the shell, missing legs, single claw, one eye, opposing eyes, patterned legs, or red eyes. For poisoning, immediately drink winter melon juice, perilla leaf decoction, or rhubarb juice. Pregnant women eating crabs may experience transverse birth (difficult labor). In August, crab intestines contain rice-awn-like substances that must be offered to sea gods in winter before consumption. Avoid crabs in December to nourish Shen (spirit) and Qi. Never eat crabs with persimmons or schizonepeta as this causes wind disorders. Remove the "wind worms" (parasites) beneath the crab roe. Combining crabs with medicinal ash wine may cause bloody vomiting.

The coastal creature Pengqi resembles a larger horseshoe crab or smaller crab - it's inedible. When Eastern Jin official Cai Mo crossed the Yangtze, he nearly died after mistakenly eating one.

Frog meat has hot properties - overconsumption causes painful urinary difficulties. Pregnant women eating frogs may shorten fetal lifespan, while small frogs can cause urinary blockage, lower abdominal pain, even death; the antidote is plantago herb taken with cold water.

Shrimp may trigger wind disorders, sores, and cold accumulation. Avoid shrimp without antennae or those turning white when cooked. Fermenting shrimp paste with hot rice in sealed containers can produce lethal toxins. Eating shrimp with pork causes nausea, excessive saliva, and facial discoloration.

Snails have extremely cold properties and shouldn't be eaten regularly. Consuming snails with clams causes heart pain (recurring every three days). Avoid armored shellfish in December.

This passage primarily discusses dietary taboos and medicinal precautions concerning aquatic products and insects:

Clams (a type of shellfish) should be followed by consuming rice after eating; otherwise, they may cause dry mouth. For those taking alchemical elixirs (dan), eating mussels may lead to abdominal pain. Overconsumption of dried mussels can cause heart vexation and blurred vision—one should stop eating them at the first sign of mild diarrhea. Eating too many freshwater clams may trigger coughing, bodily chills, and kidney deficiency. Razor clams should not be consumed during hot seasons.

Among turtles, the black variety often preys on snakes and is unsuitable for consumption—their shells should also not be used medicinally. Turtles and soft-shelled turtles should not be eaten in the eleventh lunar month, as this may cause edema.

Regarding honey: Raw honey should not be consumed in the seventh lunar month, as it may induce cholera. Honey jars must not be used for pickling fish, nor should pickled fish containers hold honey, as this damages vital energy (Qi).

When using the white-patterned pit viper, remove its head and tail, then soak in wine for three days before discarding the wine. It must be roasted over fire with skin and bones removed—this snake is highly venomous and requires caution. The black snake (a non-venomous species) from Shangluo region is best identified by its jet-black color, docile temperament, and ability to pass through hundreds of copper coins—some merchants fraudulently sell smoke-treated common snakes as substitutes.

Never sever a snake's head with a blade, as it may reflexively strike the attacker. The toxicity of geckos resides in their eyes, while their medicinal potency lies in the tail—always use intact tails. Leeches must be fried in lard until golden yellow during winter for medicinal use; those containing eggs in their abdomen should be discarded, as these creatures are notoriously difficult to kill completely. Stone leeches with pointed heads and swollen abdomens are medically unusable—mistaken use may cause eye discomfort or even blindness.

The passage concludes with an example: someone drinking mountain stream water accidentally swallowed insects, leading to abdominal pain and emaciation. Only after taking yellow earth with warmed wine did they expel thousands of leeches, demonstrating the severe harm caused by internalized insects.

On Dietary Habits and Venomous Creatures:

When eating, one should gather the Jing (essence) and Qi (vital energy) in the Dantian (energy center, first mention) beneath the navel, allowing nutrients to be absorbed gradually. After satiation, this vital energy disperses, and prolonged practice of this habit damages the body. Among centipedes, the yellow-legged variety is mostly venomous and unusable. Those killed by pecking chickens, if left unsealed overnight, attract swarms of insects—consuming them without thorough recooking poses severe health risks.

Silkworm excrement (cán shā) brewed with liquor clarifies its color and enhances aroma while possessing medicinal properties. The urine of gray, pot-bellied spiders causes skin ulcers upon contact, while the silk of flower spiders holds the most potent venom—legend claims it can sever an ox's tail. Accidental contact with male genitalia causes constriction that's hard to undo; documented cases exist of resulting necrosis—extreme caution is warranted.

Earthworms reach peak toxicity during humid summers (historical records describe victims with distended abdomens hearing nocturnal wriggling sounds inside their bodies). Saltwater immersion treats such poisoning. One Zhang Shao, bitten and afflicted with leprosy-like symptoms including eyebrow/hair loss, found relief through this method whenever internal wriggling occurred, supplemented by drinking salted broth.

The Secrets of Longevity Cultivation:

Mastery of the Earthly and Human Primordial cultivation methods can extend life to 120 years—like instantly finding direction when guided while lost. Though the Celestial Primordial method may remain unrealized before sixty, late-stage cultivation still succeeds. Full attainment brings longevity matching heaven and earth—far surpassing mere sixty years, outshining even ancient immortals like Qiao Song and Pengzu.

Some call these techniques secret immortal transmissions. When practiced vigorously in youth's robust Qi-blood vitality, rapid longevity attainment is possible. Yet the Dao's path remains obscure—even when known, perseverance proves difficult. Post sixty-four, when bodily Jing-Qi (symbolized as mercury-lead) declines, attempting revival resembles digging a well when thirsty or boiling stones for porridge. The Yin-Yang cycle's truth lies herein: without complete exhaustion, no renewal follows; without Yin's zenith, Yang cannot rebirth.

This scripture expounds on the principle of primordial Qi (yuanqi) depletion and longevity cultivation. While heaven and earth endure eternally, humans alone experience birth and death because people continuously deplete their innate primordial Qi through daily activities. When the body's yang energy is exhausted and becomes purely yin, death becomes imminent. However, if one encounters an enlightened master who imparts cultivation methods, even at the advanced age of 120, one can rejuvenate through nourishing true Qi (zhenqi), much like an old tree regaining vitality through grafting fresh branches.

Daoist scriptures record that humans, as the most spiritual of all beings, originally possessed a lifespan of 43,200 days (approximately 120 years). At birth, the primordial yang and true Qi are complete, corresponding to the pure yang state of the Qian (Heaven) hexagram in the Book of Changes (Yijing). From ages 15 to 25 onward, every ten years sees a depletion of 48 zhu (an ancient weight unit) of primordial Qi, successively corresponding to the decreasing yang states of the Gou, Dun, and Pi hexagrams. By one's fifties or sixties, only a single yang line remains, represented by the Bo hexagram. If one awakens to cultivation at this stage, recovery remains possible; but if depletion continues until reaching the purely yin Kun (Earth) hexagram, one can only barely sustain life, termed "mere longevity" (goushou).

The text cites the example of Ma Ziran, who at age 64 feared aging and death. Upon encountering the immortal Liu Haichan, who transmitted the longevity formula to him, Ma ultimately achieved rejuvenation through cultivation. This illustrates that the key to prolonging life lies in timely awakening and following the principle of the Fu (Return) hexagram in the Book of Changes. Through gradual, accumulated cultivation to replenish primordial Qi, one's physical state can progress from the Fu hexagram back to the Lin, Tai, and Dazhuang hexagrams, ultimately returning to the pure yang state of the Qian hexagram. This embodies the true meaning of "longevity" among the Five Blessings in the "Hongfan" chapter of the Book of Documents (Shangshu).

The core of cultivation involves two essentials: first, encountering a genuine master who imparts correct methods; second, persevering in accumulating primordial Qi. The text particularly emphasizes that the Bo hexagram state—when primordial Qi is nearly exhausted but one yang line remains—is the final opportunity to reverse aging through timely cultivation.

This scripture primarily discusses medicinal tonics and Daoyin (guiding and pulling) techniques in Daoist health cultivation practices.

Regarding medicinal tonics, the text cites insights from several masters. Sun Simiao (the Immortal Sun) advised that people over forty should always keep quality medicines at hand. The celestial beings remind practitioners that while worldly affairs are difficult to sever, one shouldn't take medicines too frequently. Peng Zu recommended elk antlers as a potent yang-strengthening and Jing (essence)-consolidating remedy that doesn't harm the body. The text then records two detailed prescriptions:

The first is the "Elk Antler Formula": Grind seven liang of elk antlers into powder, soak in wine and roast until well-cooked, then combine with one processed raw aconite. Take one small spoonful with wine three times daily.

The second is the "Spotted Dragon Brain Elixir" (named after a chant by a Chengdu Daoist): Using deer antler powder, deer antler glue, dodder seeds, arborvitae seeds, prepared rehmannia root and other herbs, cook with wine into paste and form into pills the size of phoenix tree seeds. Take fifty to sixty pills before meals with salted water or wine.

Concerning Daoyin techniques (a type of health-preserving exercise), the text recommends practicing during midnight when Yang Qi rises or upon waking at dawn. The specific steps are: First relax body and mind, gently exhale five or six times to expel turbid Qi; calm the heart and close eyes, click teeth thirty-six times to concentrate the Shen (spirit); then use the back of the thumbs to massage the eyes (improves vision, dispels wind and nourishes kidney Qi); next massage both sides of the nose (moistens the lungs); finally rub hands until warm and cup them over the mouth and nose. These exercises should all be performed on an empty stomach while wearing loose clothing.

This passage explains the methods and principles of Daoist health cultivation practices:

It begins by describing specific health-preserving movements: After inhaling through the nose, one rubs the palms together and massages the face (including the hairline) until the skin glows, then massages the base and outer rim of the ears. Next, place the tongue against the upper palate to stimulate saliva production, swallowing the gathered saliva in three portions, repeating this sequence three times for a total of nine swallows. The Huangting Jing (Scripture of the Yellow Court) states this practice keeps the body moisturized. After completing these actions, relax body and mind, visualizing merging with empty space. Long-term practice harmonizes Qi (vital energy) and blood circulation, promoting longevity.

The text then introduces foot massage techniques: Lift one foot with a hand while rubbing the Yongquan (Gushing Spring) acupoint on the sole 120 times. This dispels wind-dampness and strengthens leg vitality (a method famously practiced by Song Dynasty literatus Ouyang Xiu with excellent results).

The latter section uses Yijing (Book of Changes) hexagrams to explain cultivation principles: The Qian (Heaven) hexagram represents pure Yang, while Kun (Earth) represents pure Yin. The waxing and waning of Yin-Yang mirrors the moon's phases. When human desires (Yin excess) dominate, decline follows. By using heavenly principle (Yang) to restrain earthly desires (Yin), one gradually restores Yang energy like the moon growing from new to full, ultimately achieving pure Yang state and cosmic longevity.

Finally, quoting the dialogue between the Yellow Emperor and Qibo, it illustrates how human Qi-blood changes with age: At ten, the five viscera stabilize, manifesting as playful running; at twenty, abundant Qi-blood expresses as brisk walking; at thirty, physical development completes. This embodies the Daoist health philosophy of "modeling oneself on Yin-Yang."

At the age of forty, the body is strong and vigorous, with abundant blood circulation and steady footsteps. By this time, the five viscera, six bowels, and the twelve meridians reach their peak condition, after which they gradually begin to decline. The skin starts to loosen, the complexion fades, and hair begins to gray, yet overall, the body remains relatively stable—though one tends to prefer sitting for long periods.

By fifty, the liver Qi (vital energy) begins to weaken, the liver lobes thin, bile diminishes, and eyesight starts to blur. At sixty, the heart Qi declines, making one prone to melancholy and sorrow; the flow of Qi and blood slows, and one prefers lying down. By seventy, the spleen Qi weakens, and the skin becomes dry. At eighty, the lung Qi deteriorates, the Hun and Po (spiritual aspects of the mind) begin to scatter, and speech becomes confused. By ninety, the kidney Qi is exhausted, and the meridians of the limbs grow empty. At a hundred, all five viscera are depleted, the Shen (spirit) and Qi dissipate, leaving only an empty shell behind.

The classics state: After forty, Yin Qi (vital life force) begins to decline by half; by fifty, liver Qi weakens; by sixty, the sinews and bones lose flexibility, and Jing (essence) and Qi diminish. At this stage, one must be particularly cautious and disciplined, understanding how to nurture both body and mind—this is the foundation of longevity. For those over seventy, it is essential to follow the natural course, avoiding mental and physical strain and guarding against extremes of heat and cold. If one aligns with the changes of the four seasons, health and longevity will naturally follow. To remain as greedy and unrestrained as in youth would be most unwise.

The Dongshen Zhenjing (Scripture of the Divine Cavern) teaches: The art of prolonging life lies in avoiding depletion, and the path to health lies in moderate nourishment. In times of comfort, one should remain mindful of danger, preventing harm before it arises. Do not neglect minor ailments simply because they seem harmless, nor dismiss small benefits as insignificant. Even if youthful excesses have weakened the body, if one learns in later years to prevent harm and replenish vitality—ensuring ample Qi and blood—the spirit will naturally flourish, and longevity can still be attained.

The Yinde Yanshou Lun (Treatise on Virtue and Longevity) states: A single awakening of virtuous thought can extend the lifespan granted by the Three Origins (Heaven, Earth, and Water—the Daoist triad of life’s foundations); the cultivation of a single virtuous deed nourishes the very roots of these Three Origins. Thus, awakening virtue and nurturing De (virtue/power) are of utmost importance. Laozi said, "My life is in my hands, not Heaven’s," and Master Ziyang (Zhang Boduan, patriarch of Daoist Neidan) also remarked: Though refining the Golden Elixir may seem difficult or easy, it ultimately depends on oneself. Without accumulating virtue and performing good deeds in secret, one may easily encounter demonic obstructions. The Daoist scholar Guo Taishi, a master of astronomy and calendrics, compiled the Yingtian Shu (Book of Heavenly Responses), revered by later astrologers. In it, he notes: A person’s wealth, nobility, longevity, poverty, suffering, and illness are all connected to the Five Phases (Wood, Fire, Earth, Metal, Water), fate, birth charts, and celestial influences.

This passage explores the relationship between destiny and human acts of virtue. Those who appear doomed to misfortune and short lifespans seem as inescapable as candlelight reflected in a mirror, yet reality shows that while many lives conform to fate's predictions, just as many defy them. Does this not demonstrate that humans in the cosmos are sometimes bound by destiny, yet at other times can transcend it?

Through careful study we discover: though the text first meticulously analyzes destiny's profound mysteries, it later states that "accumulating hidden virtue (secret good deeds) can prolong life, and virtuous people encounter no disasters even when facing inauspicious stars." This clearly contains profound truth. As Medicine King Sun Simiao observed: "Do not attribute longevity solely to fate—the root lies in one's personal cultivation."

The text cites several exemplary cases: The Great Ultimate Immortal Xu Laile once consulted the Southern Dipper Longevity Star about fortune and lifespan. The star replied that Heaven's Dao bestows blessings on the virtuous and calamities on the wicked. If one dedicates themselves to goodness, being still they unite with the Dao, moving they meet with blessings, thus achieving "my fate rests with me, not Heaven." Conversely, those who violate heavenly principles and human ethics face legal punishment in daylight and ghostly retribution in darkness, having their lifespans reduced without realizing it.

Several famous anecdotes are recorded: Han Dynasty's Magistrate Yu Gong's impartial judgments brought his descendants to ministerial rank; a young monk who saved an ant colony by blocking their hole with his robe gained twelve extra years of life; Sunshu Ao as a child buried a two-headed snake to prevent harm to others, prompting his mother to predict his future blessings—he later became Prime Minister of Chu; Dou Yujun heeded his grandfather's dream-message to accumulate hidden virtue, not only extending his life by thirty-six years but fathering five illustrious sons.

These cases all demonstrate that accumulating virtue through good deeds can indeed alter predetermined fate. So-called "hidden virtue" refers to unrecognized acts of kindness performed without expectation of reward. Through daily virtuous actions, one accumulates blessings until reaching the state where "without seeking longevity it comes naturally, without craving life it arises spontaneously."

This passage elucidates the principle of prolonging life through accumulating hidden virtue (Yin De). The renowned Northern Song statesman Fan Zhongyan recorded that human longevity depends both on sudden enlightenment and daily moral cultivation. When asked how to cultivate hidden virtue (good deeds performed discreetly), the answer was: regardless of wealth or status, anyone can cultivate it without straining beyond their capacity. Specifically, when encountering others suffering from floods, fires, robbery, hunger, cold, illness, imprisonment, or travel hardships—or witnessing distressed animals and plants—offering assistance within one's means has no upper limit in accumulating hidden virtue, which naturally yields benevolent rewards.

As noted by Xishan (likely referring to a Taoist mountain or hermit): "Some encounter enlightened masters who impart true methods (spiritual practices). While this appears as cultivation's fruit, it's actually the blessing brought by accumulated hidden virtue." Therefore, the author specially supplements the Book of Triadic Longevity with this discourse: hidden virtue indeed extends life.

The "Diagram of Threefold Unity" (a cultivation chart unifying Heaven, Earth, and humanity) is then explained: the Three Primordials (San Yuan, fundamental cosmic forces in Taoist cosmology) of Heaven, Earth, and humanity each govern sixty years, totaling one hundred eighty years. Human lifespan is inherently bestowed by Heaven, yet some preserve it while others deplete it. Unfortunately, concrete methods are rarely transmitted in the world. This diagram mystically explores the Supreme Ultimate (Taiji, cosmic origin), with a circular exterior (symbolizing Heaven's perfection) and square interior (symbolizing Earth's stability), embodying the mysteries of Kun (Earth) and Qian (Heaven): Kun represents stable form, while Qian signifies cyclical function. Lifespan's length is encoded in this natural order—by marking a point on the diagram annually with perseverance, one may achieve the longevity of the ancient immortal Pengzu (legendarily living eight hundred years). However, without grasping the text's essence, mere marking may prove insufficient.

This volume conceals the immortals' longevity secrets: true understanding manifests in radiant complexion, dark hair, robust marrow, and strong bones. It transcends mere diagram completion—it's the state of perfect harmony with Heaven and Earth's cosmic rhythms.