《金液還丹印證圖詩》

This scripture expounds the transmission and essential methods of cultivating the Golden Liquor Returned Elixir (Jinye Huandan), an advanced alchemical practice in Daoism. The main content can be understood as follows:

This Illustrated Verses on the Verification of the Golden Liquor Returned Elixir was transmitted by the Perfected Bai Yuchan to his disciple Long Meizi, with later commentary by Hanchanzi. The text begins by emphasizing that the key to Dao cultivation lies in eliminating negative karma and accumulating virtuous affinity, achieved through diligent practice. Since ancient times, over 100,000 individuals have attained celestial ascension, with more than 8,000 cases of entire families achieving immortality. These adepts weren't born with extraordinary gifts but attained their status through persistent study and rigorous training.

The text enumerates various paths to attainment: rare cases like the Yellow Emperor (Xuanyuan) who possessed innate divinity contrast with more common examples like Xu Xun (Jingyang) who achieved realization through postnatal cultivation. Some practitioners naturally encountered immortal opportunities after purging negative karma; others discovered their destiny while guarding mountain passes; some strengthened their Daoist resolve through demonic trials; while certain steadfast cultivators remained unwavering despite repeated tests. True practitioners either refine essence (Jing) and vital energy (Qi) at the "Grand Metropolis Prefecture" (referring to key acupoints in the body), or engage in secluded cultivation at sacred mountains like Mount Taihua or Songshan.

The scripture further describes different levels of achievement: some like Li Tuo and An Qisheng attained longevity while dwelling in the mundane world; others like Prince Jin (Zijin) and Qin Gao achieved daytime ascension; some chose corpse-liberation (Shijie, leaving their physical form behind), while others opted to retain their forms and remain in this world. Regardless of the method, all must undergo processes that are either "difficult to obtain but easy to complete" or "easy to obtain but difficult to complete."

The author recounts his personal journey: from childhood devotion to Daoist pursuit, through fruitless searches for genuine masters among countless imposters. Only after thirty-six years (three cycles) of cultivation and studying under a hundred teachers did he finally attain realization. He stresses that achieving immortality is exceptionally rare, requiring both predestined opportunity and material support ("waist-copper assistance"). Revealing celestial secrets lightly incurs cosmic retribution, yet withholding proper transmission also invites censure. Therefore, the author resolves to present this teaching through combined illustrations and texts—using "Nine Chapters on External Correspondences" to elucidate the subtleties of elixir refinement, and "Nine Chapters on Internal Correspondences" to detail elixir-nurturing methods. The conclusion emphasizes that Golden Elixir (Jindan) cultivation must begin with comprehending fundamental principles, starting from the Dao of Qian-Kun (Yin-Yang).

Note on technical terms:

• Golden Liquor Returned Elixir (Jinye Huandan): The supreme alchemical practice in Daoism, interpreted as both internal (Neidan) and external alchemy (Waidan)
• Bai Yuchan: Southern Song dynasty renowned Daoist, one of the Five Patriarchs of the Southern School
• Long Meizi and Hanchanzi: Disciples of Bai Yuchan
• Jingyang: Refers to Jin dynasty famous Daoist Xu Xun, styled Jingyang
• Corpse-liberation (Shijie): A method of immortal ascension where the physical form is left behind
• Grand Metropolis Prefecture: Neidan terminology referring to crucial bodily energy centers
• Taihua and Songshan: Sacred Daoist mountains frequented by cultivators

This scripture elucidates the complete process of Daoist Neidan (internal alchemy) cultivation, divided into eighteen chapters—nine on "external symbolic elixir formation" and nine on "internal symbolic elixir nurturing"—plus introductory warnings and a concluding return-to-source section, making twenty chapters in total.

The alchemical process begins with preparing the crucible (the vessel for refinement), into which lead and mercury (materials symbolizing Yin-Yang) are placed as medicinal ingredients. Precise measurements must be observed to harmonize and produce "yellow sprouts" (the initial medicinal essence of refinement), which requires "true earth" (a medium that balances the medicinal properties). Once the elixir is formed, it must be properly harvested—each step follows strict operational protocols and often requires like-minded practitioners to assist. These are the nine stages of external elixir refinement.

After harvesting the elixir, it must be ingested and then "warmed and nurtured" (a process to stabilize its potency), completed through the "nine cauldrons" (nine stages of nurturing) and precise fire regulation. The fire must be carefully managed through "advancing and retreating" (adjusting intensity) and "bathing" (rest periods without fire). Though the elixir may be complete, if the mind remains unenlightened, one must "embrace the origin and guard the One" (focusing and stabilizing the Shen/spirit), ultimately achieving the ascension of both body and spirit to attain the rank of a "Perfected Being" (Zhenren). These are the nine stages of internal elixir nurturing.

After ingesting the elixir, a full year of nurturing is still required, gathering the Qi (vital energy) of Heaven and Earth's Yin-Yang, condensing over twenty million strands of righteous energy within the body—only then can one attain immortality. Yet the author cautions: even with extreme longevity, all things must eventually end. It is better to transcend the duality of self and objects, realize the supreme truth, move freely between stillness and action, and return to the source.

The concluding warning verses serve as an exhortation to the world: Look upon the piled bones like mountains, tears enough to fill the seas—all worldly things will perish, so fleeting is life—where then is joy? Sentient beings transmigrate through endless transformations; if enlightenment is not sought in this life, what awaits after death? This is a wake-up call urging people to pursue the Great Dao of the Golden Elixir to transcend the cycle of life and death.

Longmeizi (Dragon-Browed Master) composed this text during the Jiading era (1208–1224) of the Song Dynasty, both as a reference for later Daoist practitioners and as a warning to discern truth from falsehood. The scripture systematically expounds the entire Neidan cultivation process—from external refinement to internal cultivation—culminating in awakening to the true nature of life.

Human beings can reverse aging and regain youthfulness, even attaining mastery over heaven and earth while harmonizing Yin-Yang. Our physical form is but one manifestation among the myriad things of creation. Yet humans are called the most spiritual of all beings, standing alongside heaven and earth as the "Three Powers"—yet unlike heaven and earth, we cannot endure eternally precisely because our corporeal existence breeds endless afflictions.

People's minds are driven by fame and profit, their true nature clouded by wine and lust, their emotions entangled in attachments, drowning in the illusion of wealth and status, muddling through life in drunken oblivion. Thus they exhaust their innate Jing (essence) and Qi (vital energy), persisting in delusion until death. Compassionate practitioners pity such people—they fail to realize the Dao of longevity can be attained through study and cultivation, that every person carries immortal potential within. The methods are simple and practicable; once the Dao is realized, it remains forever, naturally yielding a light and healthy body. Even ignorant commoners, upon receiving authentic transmission and practicing diligently, can immediately reach sagely realms. Yet people stubbornly cling to their views, unwilling to awaken, content to sink into degradation.

Therefore I compose this poem at the volume's beginning to awaken those drowning in the fiery pit of suffering. Consider the heroes and scholars throughout history—even those who reached the highest offices, enjoyed lavish salaries, amassed fortunes, and kept harems—when death arrives, all alike return to dust. Wealth cannot ransom life, concubines cannot retain the dying, bones are abandoned in wilderness graves, and former passions dissolve into seas of tears. If even heaven and earth face eventual destruction, how much more fleeting are human joys? Add to this life's unpredictable sorrows and pleasures, its uncertain span of years and turns of fortune—time flies like an arrow's release, sun and moon race like galloping steeds. From bearing children to aging, sickness and death's separation, endless transformations unfold, potentially plunging one into the Six Realms of Rebirth (Buddhist concept of six life forms), even rebirth as horned and furred beasts in the Animal Realm (one of the Three Wretched Destinies). Is this not lamentable?

Awaken now! Rare is human incarnation, rarer still encountering the Great Dao—this very life holds liberation's opportunity. Strengthen your resolve, diligently seek authentic masters and true teachings, forge bonds with genuine fellow practitioners, gather alchemical materials (Dan materials), refine the essences of sun and moon, temper the quintessence of heaven and earth, and transform your mortal frame into an immortal body. You must seize this present existence for cultivation and liberation—place no hope in future rebirths.

The chapter "Primordial Models and Symbols" states: Before the undifferentiated Primordial Chaos (Mingxing), the cosmic wind-wheel's agitation produced True Lead (fundamental alchemical substance). For extreme stillness inevitably generates movement, from emptiness naturally...

This passage expounds the fundamental principle of Daoist Neidan (internal alchemy) practice—the origin and nature of the "primordial True One Qi."

The primordial state of the cosmos is the undifferentiated "Taiji" (Supreme Ultimate), from which a single Qi emerges out of emptiness, dividing into the two polarities of Yin and Yang. Human life formation follows the same pattern: when the father's Jing (essence) and mother's blood combine, the sequence of their union determines the fetus's gender. In the womb, the fetus receives "a spark of original Yang Jing-Qi" through the umbilical cord, mirroring the chaotic state before heaven and earth separated.

After birth, as one grows, this innate True One Qi gradually dissipates. The key to cultivation lies in capturing this primordial "true lead" (i.e., the True One Qi) during the moment when stillness gives rise to movement, using it as the foundation for alchemical refinement. This Qi is formless and immaterial, originating from emptiness—it is the "Taiyi's essence" (the cosmic primordial energy) from the initial division of Taiji, distinct from the postnatal substances of Jing and blood.

The text cites Master Cheng's view to illustrate that all things contain Yin and Yang and originate from Taiji. Though the phenomenal world appears diverse, the underlying principle is unified. The so-called "true lead" is represented by metal, symbolizing "metal within water" (the Yang line within the Kan trigram), which signifies the innate True Yang Qi. Practitioners must return to the origin and recover this foundational source of life.

This passage elucidates the core principles of Daoist Neidan (internal alchemy) cultivation. The "cinnabar" mentioned (referring to alchemical material) actually represents mercury, which originates from the Li fire (symbolizing the heart) and is called "true mercury." The meeting of the tortoise and snake at the Magpie Bridge (the confluence of the Ren and Du meridians) symbolizes the sign of Yin-Yang union; the cyclical movement of the crow and hare (sun and moon) along the ecliptic (the body's meridian system) represents the microcosmic orbit of internal energy. The secret transmitted orally by sages through generations involves gathering the primordial Qi (the purest energy) from the moment heaven and earth first separated, along with the essence produced during the initial interaction of the dragon and tiger (heart and kidneys), then nurturing and refining it within the Dantian (golden embryo chamber).

The "Qian-Kun Manifestations" section of the scripture explains in verse: In the primordial state before differentiation, the clear and turbid energies were unified. The Kun (Yin) maiden and Qian (Yang) youth originally transformed from the same energy, while the wood dragon (liver) and metal tiger (lungs) remained separated for millennia. Practitioners often cultivate using solitary Yin or isolated Yang, unaware that the true mystery lies in the harmonious interplay of firmness and softness. Understanding the principle of Yin-Yang inversion (mutual transformation) enables one to attain genuine immortality.

The method sages use to refine the Golden Elixir (Neidan) follows the patterns of heaven and earth's opening and closing, adhering to the principles of Yin-Yang's ascending and descending movements. Before differentiation, the cosmos resembled a chicken egg in chaos; after separation, Qian-Kun established their positions and the two polarities (Yin-Yang) were formed. The undifferentiated state was the unified Taiji (Supreme Ultimate), while after division each contained Taiji within itself. Thus, sages can recognize the primordial state when Taiji first divides, collecting this undifferentiated primordial energy as the foundation for alchemical practice.

Qian represents heaven, Yang, firmness, father, clarity and other attributes, corresponding to symbols like the wood husband, Zhen youth, dragon, fire, and Li maiden—externally Yang but internally Yin (mercury). Kun represents earth, Yin, softness, mother, turbidity and other attributes, corresponding to symbols like the metal wife, Dui maiden, tiger, water, and Kan youth—externally Yin but internally Yang (lead). These two differ in form and essence, standing in opposition without merging, like dragons and tigers separated by mountains and seas. Since solitary Yin cannot generate nor isolated Yang grow, the verse states: "The Kun maiden and Qian youth share one energy, yet wood dragon and metal tiger remain apart for millennia."

How then can these Yin-Yang energies unite? Only through the mediating function of the "Yellow Matron" (true intention, the central spleen-earth) can one lead the dragon (guide heart fire) and tame the tiger (restrain kidney water), thereby facilitating the conjugal union of Yin and Yang.

This scripture reveals the essential principles for cultivating the Golden Elixir (Jindan), exposing how most worldly cultivation methods are misguided paths. It first clarifies key terms: "husband and wife" refers to the two energies of Yin and Yang; the "yellow matchmaker" (Huangpo, mediator harmonizing Yin-Yang) represents true Earth (the Earth phase among the Five Phases); while "dragon and tiger" (symbolizing Yin-Yang) denote the primordial True Unity Qi and the Supreme Unity's essence (the purest energies).

Most fail to recognize these energies originate from the primordial realm of emptiness (Xiantian), instead indulging in erroneous practices: some employ sexual techniques (fangzhongshu), others collect menstrual blood for alchemy, some extract essence through intercourse, or even ingest impure fluids. Other misguided methods include: treating the heart and kidneys as Water and Fire for cultivation, mistaking the mouth and nose for the Mysterious Feminine (Xuannü, the Yin-Yang union point), practicing the Eight Brocades (Baduanjin) or Six Healing Sounds (Liuzijue), mere seated meditation, worshiping improper shrines, or wearing talismans like the Six Jia (Liujia Fulu). These are all deviant paths of isolated Yin or solitary Yang, contradicting the true Golden Elixir way.

Zhongli Quan (one of the Eight Immortals) observed that the body's seven fluids (tears, saliva, lymph, essence, Qi, blood, and humors) are all Yin—cultivating these alone cannot achieve the Dao. Zhang Boduan (the Purple Yang Perfected, Ziyang Zhenren) likewise stated that even millennia of breathwork is futile without understanding Yin-Yang harmony.

The authentic Golden Elixir path lies in mastering the principle of "reversal"—perceiving the subtlety of Yin-Yang transformation within daily life. This truth appears simple yet is overlooked precisely because it's too immediate. Practical cultivation must emulate cosmic patterns: rotating Heaven and Earth (Qiankun), uniting sun and moon (symbolizing Yin-Yang), subduing the dragon and tiger (regulating energies), aligning with natural rhythms (like tidal ebbs), discerning the maturity of lead and mercury (Yin-Yang symbols), inverting the positions of Water (Kan) and Fire (Li) to achieve their harmonious union (Jiji), and meticulously observing temporal cycles and firing phases (huohou) without the slightest negligence. Mastering these true mechanisms makes immortality attainable. The final mention of "furnace and cauldron imagery" (Dingqi Faxiang) refers to using the body as an alchemical vessel, modeling cosmic laws for cultivation.

The practice of alchemy fundamentally relies on two essential vessels: the cauldron (ding) and the furnace (lu), just as the cosmos operates according to its inherent principles. The construction of these vessels must adhere to precise standards: the round shape of the cauldron symbolizes the harmony of the Five Phases (Wood, Fire, Earth, Metal, Water) and the Three Powers (heaven, earth, and humanity). The mouth circumference should measure exactly four cun and eight fen, while the belly must be positioned like the human navel—perfectly balanced. When placing the foundational materials of lead and mercury within the cauldron, they must be precisely centered, and the yang fire (the alchemical heating process) must be evenly applied from below. These critical techniques are profound mysteries that ordinary practitioners can hardly grasp without direct transmission from an accomplished master.

The cauldron and furnace are to alchemy what city walls are to the people—utterly indispensable. As the Perfected Zhang Ziyang once taught: "First take heaven and earth as the model for the cauldron and furnace, then refine the essences of the sun and moon (symbolized by the crow and the hare) as the medicinal ingredients." The design of these vessels carries both the macrocosmic symbolism of Qian (heaven) and Kun (earth) and the practical functionality of their physical form—neither aspect can be neglected.

Daoist scriptures employ a rich variety of metaphorical names for the cauldron and furnace. The entire apparatus might be called the "Qian-Kun Cauldron-Vessel" or the "Kan-Li Framework" (where Kan and Li represent water and fire). Specific parts are poetically termed the "Silent Void Mansion" or the "Crimson Gate," while technical names include the "Suspended Embryo Cauldron" and the "Reclining Moon Furnace." Some names highlight materials, such as the "Golden Cauldron and Jade Furnace" or the "Cinnabar Cauldron." Other terms like the "Mysterious Pass Single Aperture," the "Muddy Pellet Palace" (referring to the upper Dantian), the "Yellow Court" (middle Dantian), and the "Qi Sea" (lower Dantian) all metaphorically describe different functional zones of the alchemical vessels.

Though the terminology varies endlessly, the core concept remains the "Qian-Kun Cauldron-Vessel." The upper crucible symbolizes heaven, the lower crucible represents earth, and the space formed between them when joined embodies humanity—thus completing the triad of heaven, earth, and man. Crafting these vessels demands exact measurements: neither too large nor too small, neither too wide nor too narrow, with every part proportionally balanced. Any deviation from these standards will compromise the efficacy of the elixir's refinement.

This scripture primarily elucidates the true meaning of "lead and mercury" in alchemical practice while critiquing common misunderstandings of neidan (internal alchemy) during that era.

Regarding the furnace dimensions: The alchemical furnace stands one chi two cun (about 40cm) tall with a circumference of one chi five cun (50cm). Its hollow center measures five cun (16.5cm) across, divided into upper, middle, and lower tiers representing the Three Powers (heaven, earth, and humanity). The furnace surface spans three chi two cun (1m) in circumference, featuring a one-chi-wide opening bordered by a two-cun-thick rim. Each measurement carries specific cosmological symbolism.

The true lead and mercury aren't physical substances: The text criticizes those unfamiliar with authentic alchemy who mistakenly identify true lead as refined silver from lead ore and true mercury as quicksilver extracted from cinnabar. Such practitioners treat these materials as foundational elements, shrouding their methods in secrecy to deceive the uninitiated. In reality, these minerals represent post-natal dross fundamentally incompatible with human physiology, making them unsuitable for crafting the true Golden Elixir.

The esoteric meaning revealed: Authentic lead originates from the "Kan Palace" (referring to the kidney-water region in the body), while genuine mercury emerges from the "Li Position" (the heart-fire domain). Kan symbolizes the northern righteous qi, belonging to the water phase that generates metal. Just as sowing wheat cannot yield hemp, attempting alchemy with mineral lead and mercury proves equally absurd.

The text particularly emphasizes that without guidance from an enlightened master, ordinary seekers can neither comprehend these mysteries nor cultivate the "sacred embryo" (referring to the internal elixir formed through cultivation). True alchemy concerns the internal transformation of jing (essence), qi (vital energy), and shen (spirit) within the human body, not the external refinement of minerals.

This scripture elucidates the principles of generating and harmonizing "lead and mercury" (symbolizing the yin and yang energies within the human body) in Daoist Neidan (internal alchemy) practice:

On the generation of lead (true lead):

The western Dui palace (corresponding to the Dui trigram in the Bagua) belongs to the Metal phase. Metal generates Water, and within Water emerges true lead. Though this lead appears yin in nature, it contains yang potency within—like a man whose gentle exterior conceals inner strength. It also carries the essence of Wu earth (the heavenly stem Wu representing central yang earth), hence its name "Yellow Male." While lead originates from the Metal-Water of the Dui palace, its fundamental nature derives from the yang energy of the Qian trigram (pure yang). Before the separation of heaven and earth, the yang energy of Qian descended into Kun (pure yin) due to cosmic turbulence. The middle line of Qian became damaged, transforming it into Li (yang outside, yin inside). Thus, the yang energy within Kan (yin outside, yang inside) becomes the source of mercury.

On the generation of mercury (true mercury):

The eastern Zhen palace (corresponding to the Zhen trigram) belongs to the Wood phase. Wood generates Fire, and within Fire emerges true mercury. Though this mercury appears yang in nature, it contains yin softness within—like a woman whose strong exterior harbors inner gentleness. It carries the essence of Ji earth (the heavenly stem Ji representing central yin earth), hence its name "Mysterious Female." While mercury originates from the Wood-Fire of the Zhen palace, its fundamental nature derives from the yin energy of Kun trigram. During primordial chaos, Kun absorbed Qian's yang to form Kan. Therefore, the yin energy within Li becomes the root of lead.

Key to cultivation:

Practitioners must discern the true origins of lead and mercury, gathering them into the Dantian (golden chamber) through the regulation of Water and Fire. Potent medicinal effects can manifest quickly, and after ten months of practice, complete physical transformation occurs. When the work matures, it crystallizes into the pure white "White Horse Teeth" Golden Elixir—this describes actual attainment rather than metaphorical imagery. Those who understand these principles cultivate like fish in water, while the uncomprehending move in opposite directions.

Harmonization symbolism:

The verse's "two eights" (二八) signify perfect yin-yang equilibrium, while "one jin" (一斤) represents the complete elixir. Harmonization isn't simple equal mixing but requires seizing the pivotal moments of Zi-Wu (midnight-noon, the transitions between yin and yang). When primordial Qi emerges during the Shen period (3-5 PM), guide it using Ji-Hai (specific temporal nodes). When meeting occurs during the Yin period (3-5 AM), the Three (essence, Qi, and spirit) and Five (phases) unite to produce the supremely authentic Central Yellow elixir (another name for the Golden Elixir). Without understanding lead-mercury harmonization, one cannot achieve the Golden Elixir. The full moon of the eighth month (peak Metal energy) and the third-day crescent moon (Zhen trigram manifestation) both mark crucial medicine-gathering opportunities.

This scripture elucidates the essential principles for refining the Golden Elixir (Jindan). It first clarifies that the true ingredients for alchemy are the purest primordial Qi (known as "the essence of the dragon-tiger's initial union") from the time when heaven and earth first separated, not the vulgar misconceptions of using impure substances like menstrual blood. The phrases "eight ounces of raven's liver" and "half a catty of hare's marrow" metaphorically represent the balanced harmonization of Yin and Yang energies, emphasizing the need for precise, measured proportions—neither excessive nor deficient.

The author laments that while many pursue the Dao, few truly comprehend its profound truth. Most mistake the turbid energies produced through sexual intercourse for cultivation materials—an absurdity akin to trying to scoop the moon with a bamboo pole. Authentic alchemy requires discerning the pure origin (qingyuan) and mastering the proper timing (shijie). The mentioned Zi (midnight) and Wu (noon) hours symbolize the core of heaven-earth Yin-Yang dynamics, demanding careful contemplation.

The text then explains the generative cycles of the Five Phases (Wuxing): Lead corresponds to Metal, which originates in the Si position (south-southeast); Metal generates Water, born in the Shen position (southwest). Thus, Metal and Water share a common source. Mercury corresponds to Wood, originating in the Hai position (north-northwest); Wood generates Fire, born in the Yin position (northeast). Hence, Wood and Fire belong to the same lineage. Alchemists must seize these moments of convergence, harmonizing through the "Three Fives" principle (East-3 + South-2 = 5; North-1 + West-4 = 5; plus the central Earth phase of Wuji = 5). Within the Dantian (Central Yellow Primordial Sea), the true embryo of the Golden Elixir (Yellow Sprout) is nurtured.

Finally, it emphasizes that "true lead" is none other than the primordial Qi of pre-heaven—the fundamental source of all creation. Authentic cultivation must grasp this root principle, rejecting heretical teachings. When genuine Qi coalesces, various signs manifest, enabling the spirit (Shen) to transcend and ascend. The passage encapsulates the core tenets of Neidan practice: mastering Yin-Yang interactions and harmonizing the Five Phases.

This scripture elucidates the core concepts and methods of "true lead and true mercury" in Daoist Neidan (internal alchemy) practice.

It first clarifies that tangible substances are not genuine materials for cultivation. The authentic materials are "true lead and true mercury," which refer to the primordial Qi (the essential energy of the cosmos at its inception). This primordial Qi emerges before the formation of heaven and earth, existing within the void—it is not the postnatal essence, blood, or bodily fluids. Methods that employ ordinary metals and minerals are fundamentally mistaken, serving only to waste resources without yielding results.

The principle of the Golden Elixir (Jindan) mirrors the growth of all things: it requires "true lead and true mercury" (the primordial Yin and Yang energies) as foundational materials. These must harmonize within the inner "cauldron and furnace" of the human body to coalesce into "yellow sprouts" (the nascent form of the Golden Elixir). The text emphasizes distinguishing genuine cultivation materials from ordinary substances, insisting on using the "energy of the dragon and tiger at the first crescent moon" (the optimal state of Yin-Yang balance) to successfully form the elixir.

The scripture then details the method of extraction: practitioners must act at midnight when Yang energy first stirs, employing specialized breathing and mental techniques to circulate the body's vital essence (Jing) and Qi. Through precise control of the "firing times" (huohou), the essence ascends along the Governing Vessel (Du Mai) to form a "millet-sized pearl" (the nascent Golden Elixir) at the crown of the head. The entire process demands exact timing, akin to the natural phenomena described poetically as "midnight auroras" or "crane wings frosted in moonlight."

Throughout, the text repeatedly cautions practitioners to seek authentic transmission from a true master, understanding the crucial elements—the cauldron, the medicinal ingredients, and the firing times—before commencing practice. Without such guidance, efforts will prove futile or even lead to deviation (zuohuorumo).

This scripture describes the process and methodology of "Golden Liquor Reverted Elixir" (Jinye Huandan) in Daoist Neidan (internal alchemy) practice.

The opening passage uses poetic imagery to depict the formation of the Golden Elixir (Jindan): golden elixir sprouts shimmer in the long river of the refining cauldron, while a single golden pill takes perfect form in the "North Sea" (referring to the Dantian, the body’s energy center). It emphasizes that without the secret teachings transmitted by a true master, one cannot grasp the correct method of "gathering the medicinal ingredients" (collecting Jing and Qi), let alone achieve the ascension of the elixir into the Great Purity (Taiqing), the highest realm of cultivation. The mystery of this ascent is likened to a crane’s wings lightly dancing with frost, or to the flow of toad’s essence (legendary lunar elixir) growing with the moonlight.

The text cites the Can Tong Qi (The Seal of the Unity of the Three) to illustrate the principle of Yin-Yang resonance: just as a burning mirror (yang sui) must face the sun to ignite fire, and a dew-collecting vessel (fang zhu) must face the moon and stars to gather dew, so too does the magnet attract iron despite obstacles—demonstrating the principle of "Qi resonating in hidden communion" (qi lei qian tong) in cultivation. It is through this principle of resonance that the alchemist "summons the elixir into the palm."

The second section details the arrangement of the alchemical workspace and ritual protocols: an auspicious geomantic site must be chosen to construct a three-tiered altar, symbolizing the Three Powers (Heaven, Earth, and Humanity), arranged according to the Nine Palaces and Eight Trigrams (Bagua). The altar is furnished with a furnace, cauldron, and other implements, while swords and mirrors are hung outside to suppress malevolent spirits. During the refining process, the practitioner must tread the Yu Steps (a ritual Daoist gait) and pace the Dipper’s constellation pattern (Beidou gangbu) to expel negative influences. The timing and intensity of the fire must be precisely controlled—within moments, a millet-sized golden elixir is formed. After ten months of gestation-like refinement, the practitioner sheds their mortal form and attains a body of pure Yang, achieving immortality.

The conclusion stresses strict adherence to the method: the refining site must be a secluded geomantic paradise, with the alchemical chamber facing the sun while sheltered in shade. The fire regulation during the process must be exact, without the slightest deviation. Upon ingesting the perfected Golden Elixir and undergoing prolonged cultivation, one ultimately attains the immortal realm of eternal life.

The cultivation of the Golden Elixir (Jindan, the core practice of Daoist internal alchemy or Neidan) requires supportive forces, just as governance requires the assistance of ministers. Three like-minded practitioners must support one another, with one taking the lead (symbolized by the "Kuigang," representing the guiding stars of the Big Dipper), while the other two serve as the three legs of a tripod, each fulfilling their role.

Zhang Boduan (the immortal Ziyang) mentions in Wuzhen Pian ("Awakening to Reality") the phrase "dismissing wives and concubines," which does not refer to sexual practices (ancient longevity techniques), nor do the furnaces and cauldrons in Lü Dongbin's (the immortal Patriarch) poetry denote external alchemy (Waidan). These metaphors are often misunderstood, leading practitioners astray. Patriarch Lü's Jinye Huandan Yinzheng Tu ("Illustrated Proof of the Golden Fluid Reverted Elixir") was created precisely to reveal the essence of Golden Elixir cultivation:

First, the Jingwu Pian ("Chapter on Awakening") awakens the world, clarifying that the Great Dao of the Golden Elixir can indeed be attained. Once this principle is understood, one must trace back to the origin (Yuanben Pian, "Chapter on the Root"), distinguishing the purity and turbidity of Yin and Yang, just as Heaven (Qian) and Earth (Kun) are distinguished. After grasping Yin-Yang, one employs the "cauldron and furnace" (symbolic vessels of Neidan practice) to nurture the Golden Elixir. Recognizing the cauldron, one must then discern the true lead and mercury (symbolizing the refined essences of Jing, Qi, and Shen within the body). Mastering these substances requires precise timing (Hehe Pian, "Chapter on Harmonization"), for the Golden Elixir depends on the "true soil" (the primordial Qi, the foundational life energy) to gestate the sacred embryo (the perfected spirit, or Yuanshen).

When the true soil manifests, the moment of "gathering" (Cai, "Chapter on Ripeness and Tenderness") must be seized. Once the method of gathering is mastered, a "dan chamber" (a dedicated cultivation space) must be established, equipped with ritual implements such as swords and mirrors, as well as water clocks (timekeeping devices). Once prepared, the three aligned practitioners may enter the chamber to cultivate together—these external protocols must be strictly observed.

Later students should understand: while forming the elixir may occur in a fleeting moment (Yihou), its refinement requires "nine cycles and ten months" (a prolonged process). Specifically, thirty days in a month, twelve two-hour periods (Shichen) in a day, totaling one hundred ke (ancient time units) between day and night—thus, ten months amount to 3,600 shichen and 30,000 ke. Such sustained effort is arduous, necessitating the rotation of duties among the three practitioners. The lead cultivator (Dangxian Zhu) oversees critical moments, while fellow practitioners provide mutual reminders to prevent errors.

The cultivation of the Golden Elixir (Jindan) demands utmost precision in timing, with no room for the slightest error. One must strictly follow the water clock (ancient timekeeping device) to determine celestial movements, regulating the fire phases (control of heat during alchemical processes) to master the waxing and waning of Yin-Yang. The entire alchemical procedure must adhere to the principle of "morning Zhun and evening Meng" (using the Zhun trigram's fire phase at dawn and the Meng trigram's fire phase at dusk), maintaining awareness of the alternating rhythms of day and night, Yin and Yang throughout the process.

The recluse Master Wuming (Daoist hermit) once said: The Heavenly Pass (Baihui point at the crown) is governed by the hands, while the Earthly Pivot (Huiyin point at the perineum) revolves with the heart. Gather the essence of the seventy-two seasonal nodes (annual climatic cycles) into the cauldron furnace, and absorb three thousand six hundred strands of pure Yang Qi into the elixir embryo. Remain vigilant in adjusting the fire phases, operate with single-minded focus, guard against dangers, and ensure flawless precision. This resembles three practitioners taking shifts to tend the furnace—as the ancients said, "remaining attentive without feeling weary."

Regarding the ingestion of the Golden Elixir: When the "Yellow Sprout" (initial form of the perfected elixir) appears, swallow it immediately without hesitation. At this moment, all Yin-mercury (Yin energies) in the body will dissipate like mist, while Yang-lead (Yang energies) naturally return to the Dantian (energy center). This fusion occurs as naturally as a child reuniting with its mother or the harmonious meeting of female and male forces. With proper fire phase regulation, after ten months of gestation-like cultivation, immortality is achieved.

When the Golden Elixir fully matures, ingesting merely a knife-point measure (minimal dose) will instantly elevate one beyond mortal realms. Henceforth, one transcends cosmic constraints and surpasses Yin-Yang laws, gaining freedom to transform appearances at will, with lifespan rivaling heaven and earth.

Concerning the Nine Cauldrons method: The Golden Elixir's secrets elude ordinary comprehension—six hundred hexagram transformations correspond to the nine cauldrons' changes. Emperor Yu established standards to suppress deceit, while the Yellow Emperor forged cauldrons to complete the Great Dao (Daode). Alchemy must follow specific temporal cycles, and upon completion, purity must be maintained. As seasonal energies cycle endlessly, the Dragon and Tiger (Yin-Yang energies) naturally meet and merge.

The mystery of elixir cultivation lies in the "Divine Water and Blossoming Pool" (convergence point of vital essences), incomprehensible to mundane minds. Three hundred fire phase records exist, each interlinked. Of the sixty-four Yi Jing hexagrams, excluding Qian, Kun, Kan, and Li (representing cauldron and ingredients), the remaining sixty govern the celestial fire phase cycles. The entire process spans three hundred days, with morning and evening phases each governed by one hexagram—beginning with Zhun and Meng, cycling through Jiji and Weiji, totaling six hundred hexagrams. The nine transformations mirror the nine cauldrons' changes: only after Emperor Yu's standardization was chaos eradicated, and only through the Yellow Emperor's cauldrons was the Great Dao perfected.

This scripture expounds the "Golden Fluid Returned Elixir" (Jinye Huandan) practice in Daoist alchemy. The content is divided into two main sections:

The first part describes ancient immortals refining the Golden Elixir (Jindan) at Junshan Island in Dongting Lake. They cast the alchemical cauldron using metals from Shou Mountain, and after completing the elixir, ascended to heaven riding a fire dragon in broad daylight. The "nine cauldrons" mentioned here don't literally mean nine vessels, but symbolize the elixir undergoing nine refinement cycles (jiuzhuan). Casting the golden cauldron must strictly follow alchemical specifications: a mouth diameter of 3.5 inches, lip thickness of 2 inches, height of 12 inches, with uniform wall thickness and three protrusions on the belly. The ancients emphasized the difficulty of crafting golden cauldrons for profound reasons - neither altering the specifications nor allowing impurities near the furnace to contaminate the elixir was permitted.

The second section explains fire regulation in alchemy. The process must follow celestial patterns: the moon moves about 13 degrees daily, completing a heavenly circuit monthly; the sun moves 1 degree daily, completing its annual circuit. Alchemy essentially condenses the energies of years, months, days and hours into momentary intervals - a single ke (15 minutes) of firing contains the seasonal transitions of an entire year. As the Cantongqi (The Seal of the Unity of the Three) states, begin gently and end vigorously, carefully observing and adjusting temperatures through twelve seasonal cycles. Maintaining this uninterrupted firing day and night, the yin and yang energies (symbolized as dragon and tiger) naturally converge, gradually coagulating into a purplish-red Golden Elixir.

The appended "Fire Advancement Poem" details the firing process: kindling begins at the zi hour (11pm-1am), with flames gradually subsiding by the gui hour (approx. 9-11pm). Breath regulation should be soft and continuous, with 216 yang lines (symbolizing firing intensity) corresponding to the Fu, Lin, Tai, Guai and Qian hexagrams. Timing must be precise as a water clock (ancient timekeeper), cultivating lotus-red elixir within intense flames. The author marvels how this immortal's poem fully reveals firing secrets, yet remains incomprehensible to the unenlightened.

This passage discusses the method of regulating "Yang Fire" (yanghuo) in Daoist Neidan (internal alchemy) practice. The term "Yang Fire" refers to the controlled circulation of authentic Qi (vital energy) within the body during cultivation. Practitioners must follow natural rhythms like the movement of heaven and earth, comprehending the principles of mutual generation and restraint between Yin-Yang and the Five Phases (Wood, Fire, Earth, Metal, Water).

Breathing should be gentle and prolonged, resembling what Zhuangzi described as "the breath of perfected beings reaching their heels" (indicating deep, foundational breathing mastered by advanced practitioners). The Southern Song dynasty master Bai Yuchan cautioned against both excessive tension and laxity during practice. The Tang dynasty adept Zhen Yizi (True Unity Master) emphasized precise timing, using the transformations of the sixty-four hexagrams and twenty-four solar terms to regulate the fire intensity.

Improper fire regulation may lead to Yin-Yang imbalance (metaphorically described as "torrential rains and raging winds") or, in severe cases, Qi deviation (depicted as "mountains collapsing and earth splitting"). Therefore, meticulous control of fire phases is essential.

The text details correspondences between hexagrams, solar terms, and seasonal phenomena for fire regulation:

• The Fu hexagram (䷗) corresponds to the eleventh lunar month and the solar terms of Winter Solstice and Minor Cold, marking the beginning of single-Yang Qi cultivation.
• The Lin hexagram (䷒) aligns with the twelfth month and the solar terms of Major Cold and Spring Commencement, when Yang energy gradually increases, requiring advancement to the double-Yang stage.

It further enumerates pentad-based phenological changes (such as wild geese migrating north or magpies building nests) within each solar term, which serve as reference standards for adjusting cultivation intensity.

This passage employs the hexagrams of the Zhouyi (Book of Changes) and natural phenomena as metaphors for the "fire phases" (huohou) in Daoist alchemy—the precise timing for regulating breath and intention during cultivation. Following the twelve months of the year, it meticulously details the seasonal transitions, phenological signs, corresponding hexagrams, and key cultivation practices for each period.

Take the first month as an example: At this time, the handle of the Big Dipper points to the yin position, corresponding to the Tai hexagram (䷊, with three yang lines). The solar terms are "Rain Water" (Yushui) and "Awakening of Insects" (Jingzhe). Natural signs unfold in sequence: the east wind melts the ice and snow; five days later, hibernating insects begin to stir; another five days, fish swim beneath the thinning ice; then otters catch fish, wild geese fly north, and plants sprout. Practitioners should focus their efforts during the yin hour (3–5 a.m.), when the moon is in its waxing crescent phase (6th–8th day). The corresponding hexagrams include Tongren and Dayou, marking the "Three Yang Phase" (sanyang hou) in the fire regulation process.

In the second month, the Dipper handle points to mao, matching the Dazhuang hexagram (䷡, four yang lines). During the "Spring Equinox" (Chunfen) and "Pure Brightness" (Qingming), peach blossoms bloom, orioles sing, eagles transform into cuckoos, swallows return, and thunderstorms begin. Cultivation should occur at sunrise (mao hour, 5–7 a.m.), with the moon waxing (8th–10th day). Hexagrams like Gu and Lin apply, and the fire phase enters the "Four Yang Bathing Phase" (siyang muyu hou)—a critical stage for breath adjustment.

The third month sees the Dipper at chen, corresponding to the Guai hexagram (䷪, five yang lines). Around "Grain Rain" (Guyu) and "Summer Begins" (Lixia), phoenix trees flower, field mice turn into quails, rainbows appear, duckweed flourishes, turtledoves flutter, and hoopoes alight on mulberry trees. Practice is best during the chen hour (7–9 a.m.), with the moon nearly full (11th–13th day). Hexagrams such as Bo and Fu guide the process, advancing the fire phase to the "Five Yang Phase" (wuyang hou).

By the fourth month, the Dipper points to si, aligning with the purely yang Qian hexagram (䷀). Here, yang energy peaks, and practitioners must seize this moment—just as all things in nature reach their zenith of growth. This entire system intricately correlates astronomy, calendrics, phenology, and alchemical cultivation, emphasizing harmony with natural rhythms to refine the fire phases of practice.

This scripture primarily discusses the two Neidan (internal alchemy) cultivation methods of "advancing the fire" (jinhuo) and "retreating the tally" (tuifu), along with their corresponding natural rhythmic changes.

The first section explains the "advancing the fire" method. Using natural phenomena as metaphors: in terms of solar terms, it corresponds to the period from Lesser Fullness (Xiaoman) to Grain in Beard (Mangzhong). Regarding phenological changes, it begins with mole crickets chirping, followed by earthworms emerging, snakegourd fruits growing, bitter vegetables flowering, and finally the withering of delicate grasses and ripening of wheat. Temporally, it aligns with mid-morning (9-11 AM, Yusheng), the lunar phase of waxing gibbous to full moon (13th-15th day), and corresponds to hexagrams like Great Exceeding (Daguo), Influence (Xian), Perseverance (Heng), Retreat (Dun), and Great Strength (Dazhuang). This is the phase of gradually increasing yang energy, where practitioners must carefully regulate the fire intensity—like nurturing golden sprouts (huangya) within vigorous flames—ultimately cultivating golden lotuses (jinlian). This stage requires completing transformations through 216 yang lines.

The second section describes the "retreating the tally" method in poetic form: cultivation begins at noon (wushi) through eighteen stages. This marks the gradual growth of yin energy, mirroring the transition from hexagram Encounter (Gou, with one yin line emerging) to hexagram Earth (Kun, pure yin), when all things begin to contract and store. Though the method resembles advancing the fire, the waxing-waning direction of yin-yang is reversed. The period from noon to midnight (wu to hai) constitutes yin tally cultivation, corresponding to hexagram Youthful Folly (Meng). Annually, this aligns with the fifth month (when the Big Dipper points south), the musical pitch Ruizbin, and the solar terms from Summer Solstice (Xiazhi) to Lesser Heat (Xiaoshu). Phenologically, it manifests through sequential natural phenomena: praying mantises hatching, shrikes calling, mockingbirds ceasing song, and deer shedding antlers.

This scripture employs multiple temporal measurement systems to describe the patterns of Yin-Yang transformation during summer and autumn, containing the following key observations:

From sundial timekeeping, the sun's position at the Wei hour (1-3 PM) corresponds to the sixth lunar month, the Shen hour (3-5 PM) to the seventh month, the You hour (5-7 PM) to the eighth month, and the Xu hour (7-9 PM) to the ninth month. This method determines time through shadow positioning.

Regarding lunar phases, from the 16th to 18th day the moon begins waning after fullness, enters its last quarter phase from the 18th to 23rd, and displays a crescent from the 23rd to 25th. This reflects the waxing process of lunar Yin energy.

In terms of hexagram evolution: the sixth month corresponds to the Jin and Mingyi hexagrams with two Yin lines; the seventh month to Xie and Sun hexagrams with three Yin lines; the eighth month to Cui and Sheng hexagrams with four Yin lines; and the ninth month to the Bo hexagram with five Yin lines. The increasing Yin lines demonstrate nature's pattern of gradually strengthening Yin Qi.

Seasonal phenomena include:

Sixth month (Great Heat): Crickets hide in wall crevices, eagles begin hunting, and decaying grass transforms into fireflies.

Seventh month (End of Heat & White Dew): Cool winds rise with cicadas' autumn song, birds of prey hunt smaller birds, and grains start ripening.

Eighth month (Autumn Equinox & Cold Dew): Wild geese migrate south, swallows return to nests, thunder diminishes, and insects enter hibernation.

These phenomena manifest the dynamic equilibrium of waxing and waning Yin-Yang energies.

Musically, the periods correspond to the Linzhong (6th month), Yize (7th month), and Nanlü (8th month) pitch standards, whose variations resonate with seasonal transitions. The Big Dipper's handle points southwest (Wei), west (Shen), northwest (You), and north-northwest (Xu), further marking seasonal changes.

Through multidimensional spacetime coordinates, this passage illustrates the Daoist cosmological principle of "Heaven-human correspondence," integrating celestial movements, phenological changes, and Neidan (internal alchemy) firing times. The mentioned "Yin recession periods" and "bathing periods" represent crucial temporal nodes in Neidan practice for harmonizing with Yin-Yang transformations.

This scripture primarily expounds on the principles of Yin-Yang transformation and the "extraction-addition" (choutian) cultivation method in Daoist Neidan (internal alchemy) practice.

The text first employs seasonal changes as metaphors to describe the waxing and waning of Yin-Yang energies: From Frost's Descent to Winter's Commencement, wild geese migrate south, sparrows transform into clams in water, chrysanthemums bloom in full glory, jackals begin storing food, vegetation withers, and insects enter hibernation. Corresponding to the diurnal cycle, this represents the period between 7-9 PM (Xu hour), when the moon enters its waning crescent phase (26th-28th lunar day), symbolized by the hexagrams Feng, Lü, Xun, Dui, and Huan. This marks the gradual strengthening of Yin energy, termed the "retreat of five Yin phases."

The text then depicts the tenth lunar month (Hai month): When the Big Dipper's handle points to the Hai position, corresponding to the Yingzhong pitch in the twelve-tone system and the Minor Snow and Major Snow solar terms. Water surfaces begin freezing, earth solidifies, pheasants transform into giant clams, rainbows disappear, heaven and earth energies separate, and all beings enter winter storage. Corresponding to the Hai hour (9-11 PM), when the moon transitions between darkness and new moon (28th-30th lunar day), represented by the hexagrams Jie, Fu, Xiaoguo, Jiji, and Weiji. This is the "retreat of six Yin" phase where Yin energy peaks before Yang begins its resurgence.

In cultivation practice, one must strictly follow these Yin-Yang rhythms. Through the cyclical application of "morning Zhun and evening Meng" (differing practice methods at dawn and dusk), the "sacred embryo" (Neidan) naturally forms within.

The second part explains the "extraction-addition" method:

"Extraction-addition" refers to regulating Yin-Yang energies within the body. Each "fire advancement" (yang stimulation) increases Yang energy incrementally, like the dragon and tiger (symbolizing Yin-Yang energies) spiraling and converging at the Crimson Palace (heart region). As practice progresses, Yin aspects—the Po (corporeal soul) and lead (representing Yin force)—gradually diminish, while Yang aspects—the Hun (ethereal soul) and mercury (representing Yang force)—steadily strengthen. Practitioners must maintain single-minded focus, avoiding distracting thoughts. The entire process hinges on precise "fire timing" (intensity and duration of practice)—there exist no alternative shortcuts.

Specifically, "one fire advancement generates one Yang" refers to regulating the interaction between Kan-water (kidney Qi) and Li-fire (heart fire) through day-night cultivation. The "dragon-tiger spiraling" describes the circulation of Jing (essence) and Qi through meridians, ultimately condensing into jade nectar (Neidan essence) at the Muddy Pellet Palace (upper Dantian) and nurturing yellow sprouts and white snow (early-stage Neidan forms) in the Dantian (energy center).

In the cultivation of the Golden Elixir (Jindan), the yin po (yin essence-Qi) within the body diminishes like lead as practice progresses, while the yang hun (yang spirit-Qi) grows increasingly vigorous like mercury. This process resembles a hen incubating eggs or a divine dragon nurturing its pearl, requiring constant gentle nourishment day and night. At dawn, one gathers yang Qi; at dusk, one collects essential energies, refining them at precise intervals. As cultivation deepens, the "mercury" (yang energy) gradually increases while the "lead" (yin energy) diminishes, until the yin po is completely transformed and the yang hun becomes unshakable. After ten months of such practice, the pure yang Golden Elixir is finally formed.

The practitioner must maintain a mind as still as dead ashes, yet with unwavering determination; though detached from external surroundings, their efforts must remain diligent. It is essential to focus on circulating Jing (essence) and Qi (vital energy) with precision, carefully regulating the "fire times" (huohou, the rhythm of practice), for the slightest error may lead to failure. The key to balancing yin and yang energies lies entirely in mastering these fire times—not through ordinary water and fire, but by harnessing the True Water of the Great Yin (lunar essence), the True Fire of the Great Yang (solar essence), and the Primordial Ancestral Qi (innate energy) to nourish the elixir. Apart from this daily and nightly cycling of solar and lunar energies to nurture the Golden Elixir, there exists no other method to attain the Dao.

A crucial note: working with these solar and lunar energies does not simply mean gathering solar essence by day and lunar essence by night. Those who mistake deviant techniques of "harvesting yin to supplement yang" for the Great Dao are spreading false teachings; those who use metals, minerals, or herbs as elixirs are deluded fools; those who believe fixed measurements of increase and decrease at dawn and dusk can control the fire times are like blind men riding blind horses—utterly lost. Practitioners must never flaunt cleverness or rigidly cling to scriptures to deceive others.

Regarding the "bathing" (muyu) principle in cultivation—periods of rest to adjust the fire times: although Golden Elixir practice typically requires a full year, one must pause during the months of Mao (the Rabbit, corresponding to February) and You (the Rooster, corresponding to August). The Mao month aligns with the second lunar month's solar term, but practice should cease early during the Shangyuan festival (15th day of the first month) to avoid danger; the You month aligns with the eighth month's term, but by the Zhongyuan festival (15th of the seventh month), one must maintain perfection and purify the spirit. Missing these critical timings leads to cultivation imbalances akin to droughts or floods; only by harmonizing with celestial rhythms can one achieve balanced "wind and rain." Understanding when to apply "punishments and virtues" (xingde, regulating yin-yang) and timely bathing ensures the practice avoids perilous deviations.

The phrase "the jade pivot of the Northern Dipper momentarily halts its rotation" in the Scripture on Salvation refers to the state of yin-yang equilibrium achieved during cultivation. Droughts, locust plagues, and floods all stem from improper regulation of the "fire times" (火候) in practice, while favorable weather signifies perfect modulation of the "adding and withdrawing" (抽添) technique. The second and eighth lunar months mark critical transitional periods between yin and yang phases, requiring special attention.

The second month corresponds to the Mao position (卯月), represented by the hexagram Great Strength (大壮, four yang lines above two yin). All things flourish in spring—this manifests De (Virtue/Power). Yet the shedding of elm seeds at this time reveals yang containing yin, De bearing the seed of retribution (刑). The eighth month aligns with the You position (酉月), symbolized by the hexagram Contemplation (观, two yang lines above four yin). The autumn withering of vegetation expresses retribution's dominance. However, the simultaneous growth of shepherd's purse and wheat demonstrates yin harboring yang, retribution cradling De. Golden Elixir (金丹) adepts initiate their fire-phase practice (起火运符) from the winter solstice's first yang impulse. Upon reaching these pivotal yin-yang transition points in the second and eighth months, they temporarily suspend practice to consolidate gains, preventing peril and laxity—only thus can ultimate success be achieved.

Regarding the visionary phenomena of Golden Fluid Reverted Elixir (金液还丹) cultivation:

Daily within the alchemical cauldron (丹鼎), the practitioner refines essence (精) and qi (气). Through the River Chariot circuit (河车运转—the internal pathway of energy circulation in Neidan), true qi ascends to the crown. Like heavenly dew nourishing all beings, numinous springs converge into flowing rivers. The perfected elixir becomes rounded as a sparrow's egg, translucent as crystalline pearl. Upon ingesting this golden essence, one attains the terrestrial immortal's (陆地神仙) realm.

In detail:

"Morning after morning, golden tripods release rising smoke" describes gathering medicinal substances (essence-qi) in wuwei (non-action) spontaneity while naturally regulating fire phases. Through unceasing daily effort, one seizes heaven-earth's arcane mechanisms, applying River Chariot principles. As Kan (water) and Li (fire) intersect, smoke rises from the cauldron; following the sun-moon (crow-hare) cycle, golden fluid is transported to the Kunlun summit (upper dantian).

"Nectar permeates space, nourishing myriad beings" portrays this phenomenon: celestial dew signifies worldly auspiciousness, while cauldron-born nectar marks the elixir embryo's formation. The golden elixir—originally condensed essence—transforms through fluid (saliva) circulation within the numinous spring's wondrous cavity (dantian). Flowing ceaselessly like an eternal river, it bathes the dantian day and night, ascending to the Muddy Pellet Palace (泥丸宫, upper dantian) where the sacred embryo crystallizes. After a hundred days' refinement, the elixir takes form—sparrow-egg round, pearl luminous, radiating light through the entire body. This constitutes the tangible realization of authentic cultivation.

The "Illustrated Poems on the Verification of the Golden Elixir Returned to the Dan" describes two crucial stages of Daoist Neidan (internal alchemy) practice—"Embracing the Origin" (Baoyuan) and "Facing the Origin" (Chaoyuan).

After the practitioner undergoes ten months of gestational nurturing akin to pregnancy, the Golden Elixir matures and is swallowed into the abdomen, enabling the transformation of body and bones. This moment resembles a dragon shedding its mortal form—the physical body becomes indestructible, transforming into an earthbound immortal. The text employs the Daoist term "swallowing the measuring spoon" (daogui, referring to ingesting the Golden Elixir) to depict this critical breakthrough. Once achieved, one immediately transcends the ordinary and attains sagehood, liberated from the cycles of life and death.

The subsequent "Embracing the Origin" stage requires nine years of wall-facing cultivation. Like Bodhidharma meditating before a wall at Shaolin Temple, practitioners must completely eliminate distracting thoughts until their mind becomes as clear as the bright moon. Though the physical body has already achieved diamond-like indestructibility, one must continue awakening the light of wisdom within deep meditative absorption. Only when true nature attains complete perfection—free from all obstructions—can one achieve the freedom of "returning westward with a single sandal" (legend says Bodhidharma left only one shoe after death).

The final "Facing the Origin" stage portrays the consummation of spiritual practice. After nine years of cultivation, both form and spirit reach sublime states through the dual cultivation of nature and life (xingming shuangxiu), merging completely with the Great Dao. When accumulated merit reaches perfection, celestial officials bearing imperial edicts descend to guide the adept. Riding dragon chariots and phoenix carriages, the cultivator ascends to the celestial realms as an immortal official, forever freed from worldly suffering. The poem reminds practitioners to diligently accumulate virtue, for such divine opportunity ultimately awaits the worthy.

Human existence is like an ephemeral dream or fleeting bubble in this turbid world. Without enduring the tempering of spiritual cultivation, how can one ascend to the golden celestial palaces (Jinque) and return to the divine abode (Dixiang)? One must accumulate virtuous deeds (De) and meritorious conduct, diligently seek guidance from enlightened masters to obtain the true transmission of the Dao (Dao), thereby transcending the cycle of life and death. When sincere cultivation moves heaven, how could one fail to encounter the opportune moment? The Great Dao (Dao) has never abandoned humanity—it is people who have strayed from the Dharma. Why then hesitate?

On the truth of returning to the origin (Fanben Huan Yuan):

The genuine return to origin lies neither in the south nor the east. The innate spiritual essence (Yi Ling Miao You) that all people inherently possess is originally complete and unimpeded—there is no difference in nature between sages and fools, nor any distinction between ordinary beings and saints. Mistaking red for cinnabar stems from habitual perception, just as an infant instinctively calls for its mother while clinging to appearances. All artificial endeavors are illusory; only by realizing the profound mystery that "true emptiness is not empty" can one grasp ultimate truth.

The essence of returning to origin transcends directional concepts—it is neither empty meditation nor deliberate action. This luminous nature is inherently perfect, pure, unstained, and freely vibrant. From the bustling capital (Shenzhou Chixian) to remote villages, from the wise to the simple-minded, every person is fully endowed with this primordial nature. Yet as years pass, people become engrossed in sensual pleasures and cunning debates, like those who misidentify colors or mistakenly name relatives, thus deviating from truth.

Upon sudden awakening to the mystery that "true emptiness is not empty," one returns to the original face before parents were born. Achieving this state, water cannot drown you, fire cannot burn you, metal and stone cannot obstruct you, weapons cannot harm you, wild beasts cannot assault you—you transcend the constraints of yin-yang (Yin-Yang) and leap beyond the wheel of life and death. Only by completely shattering illusory emptiness does one attain genuine enlightenment. This constitutes the ultimate return to origin and represents the most sublime mystical realm in Buddhism.