《周易參同契發揮》Vol. 7

People today are always chasing after trivial techniques without understanding the profundity of the great Dao (the Way). They abandon the proper path to take crooked shortcuts, seeking quick results—like a blind man discarding his cane or a deaf person trying to appreciate music. It’s as futile as diving into water to catch pheasants and hares, climbing mountains to find fish and dragons, planting wheat yet expecting millet, or using a compass to draw squares—wasting effort, exhausting the spirit (Shen), and ending up with nothing.

The cultivation of the Golden Elixir (Jindan, the core method of Daoist Neidan/internal alchemy) requires gradual accumulation of essence (Jing) and vital energy (Qi) to succeed; there’s no shortcut to instant attainment. The congealing of the inner elixir proceeds in stages: a moment to form the embryo (initial condensation), a hundred days to lay the foundation, a year to enter the gate, and three years to refine and fully form it. These are strict steps—how could there be such a thing as becoming an immortal overnight after just meeting a master? Sadly, modern seekers of the Dao are often misled by hearsay, unable to distinguish the orthodox from the heterodox, obsessed with quick results and trivial tricks. Some grasp only superficial knowledge yet consider themselves enlightened; others learn forms but not their application, clinging stubbornly to their own views while imagining themselves accomplished. Worse still, some spread heresies to slander the true path, twisting scriptures to deceive beginners, spreading errors far and wide. Even the occasional bright mind refuses to seek guidance humbly, relying solely on bookish study for awakening—how is this any different from a blind man rejecting his cane? As for the ignorant, they don’t understand the principles at all, forcibly imposing their wild guesses onto alchemical texts—isn’t this like a deaf person listening to music?

For instance, some mistake the navel for the Mysterious Pass (Xuanguan, a key point in cultivation)—this is like diving for pheasants in water. Others take the eyes as the Hua Pool (a vital inner locus in practice), akin to searching for fish and dragons on mountains. There are even those who practice techniques of "plucking yin to nourish yang" for immortality or sit in barren meditation seeking eternal life—isn’t this the folly of planting wheat yet expecting millet, or using a compass to draw squares? All are deluded, wasting effort until old age brings nothing but regret!

The truth is, genuine cultivation is profoundly simple. As Chapter 39 of the Zhixuan Pian states: "What is illuminated within is the ultimate truth; what enters from without is not truly intimate." The Golden Elixir lies within—there’s no need to seek it externally. Yet why did Wei Boyang (author of the Zhouyi Cantongqi) speak of "ingesting" it? Does this mean the Golden Elixir comes from outside?

This passage explains the key principle of "lead and mercury uniting" (qian gong xiang tou) in Neidan (internal alchemy) practice. The "flowing pearl of the sun" refers to the spiritual mercury (innate vital essence, xian tian jing qi) within the human body, which moves restlessly like quicksilver and tends to dissipate easily. The "golden splendor" (jin hua) represents true lead (primordial essence, xian tian yuan jing). When the mobile mercury encounters the stable lead, they naturally combine and transform.

During cultivation, a remarkable phenomenon occurs: the initially solid golden splendor (lead) first liquefies, like melting fence posts with horse-tooth patterns. At this stage, the lively yang energy (mercury) spontaneously merges with it. As the Cuixu Pian states, the crux of alchemy lies in refining the prenatal qi into "yellow sprouts" (huang ya, the embryonic form of the golden elixir), which then develops into "jade blossoms" (yu ying, a more advanced stage of the golden elixir).

The author resolves an apparent contradiction in classical texts: why do they describe the elixir method as "utterly simple" while simultaneously requiring practitioners to "thoroughly understand yin-yang"? This is because simple-minded people often cultivate with straightforward sincerity, whereas the intellectually clever tend to abandon the path due to excessive doubt. Thus, Wei Boyang meticulously elaborates in the Cantong Qi precisely to dispel practitioners' uncertainties.

Using bodily phenomena as metaphors: the same prenatal energy manifests as tears in the eyes, essence in the kidneys, and nasal mucus—demonstrating how jing-qi transforms and scatters according to different circumstances. Only true lead (golden splendor) can capture and consolidate the volatile spiritual mercury (flowing pearl), causing it to coagulate into the solid golden elixir. This transformative process occurs completely naturally, following the Dao's principles just as different states of matter interconvert.

This passage explains the interaction between lead and mercury (symbolizing the yin and yang energies within the human body) in Daoist Neidan (internal alchemy) practice, along with the precise timing required in the alchemical process.

Mercury (representing the original spirit [Shen] and Li-fire) acts like a minister—when lead (symbolizing original essence [Jing] and Kan-water) initiates movement, mercury responds accordingly, mirroring how a ruler's command prompts a subject's compliance. Lead embodies metal nature while mercury embodies wood nature. Wood naturally favors metal, and metal inherently cherishes wood—this yin-yang pairing creates spontaneous mutual resonance and union.

"Seizing the yin hour" refers to acting decisively during specific celestial timings, while "confining within the forbidden gate" describes returning the gathered energies to the furnace for refinement. The Huanyuan Pian (Returning to the Origin) states the key lies in harmonizing with celestial timing, yet who truly understands the exact position where the elixir coalesces? Aligning with cosmic mechanism means precisely grasping the "seizing the yin hour" moment, while the elixir's coalescence point corresponds to the "confining within the forbidden gate" location. Practically, this means catching the instant when yin energy peaks and begins transforming into yang, initiating the "applying fire" (activating internal refinement) at the first stirring of yang—neither prematurely nor belatedly. This constitutes "seizing the yin hour." During fire application, one must guide the body's Qi (vital energy) back to its source, circulating through all bodily passes, gathering the sovereign fire (heart fire), ministerial fire (kidney fire), and communal fire (whole-body energy) within the Yellow Court (Dantian) to forge the elixir—this is "confining within the forbidden gate."

True lead (original essence) originates from the Kun-mother (lower Dantian), like a nurturing mother bearing children. When true lead ascends to the Qian-palace (upper Dantian) and combines with true mercury (original spirit) to form the elixir, it returns to the Kun-mother's domain—just as a filial child repays kindness or crows feed their parents. Yet without fierce fire refinement, true lead cannot ascend—akin to how a stern father's commands demand strict execution. The Yuzhi Shu (Jade Mushroom Treatise) states that lead cannot fly without fire, nor can mercury coagulate without lead—containing profound mysteries within.

While conventional Five Phases theory describes sequential generation (metal begets water, wood begets fire), alchemical practice pairs wood with fire (fire paradoxically generating wood) and metal with water (water paradoxically generating metal)—termed "the Five Phases' reversed sovereigns mutually supporting generation." Using Li-palace fire (heart fire) to refine metal nature (original essence) resembles how metal normally overcomes wood, yet this counterintuitive overcoming relationship paradoxically advances cultivation.

This passage explains the core principle of "water and fire complementing each other, dragon and tiger coupling" in Daoist Neidan (internal alchemy) practice. The northern direction corresponds to water, which contains metal within (the yang line in the Kan trigram); the southern direction corresponds to fire, which contains wood within (the yin line in the Li trigram). The key to cultivation lies in harmonizing the metal within water (true lead) with the wood within fire (true mercury).

When three (the union of water-one and fire-two) merges with five (central earth) to become one, it forms the purest energy between heaven and earth. This transformative process can only be transmitted orally from master to disciple and is difficult to fully express in writing. It resembles the undifferentiated chaos at the beginning of creation, where the true Qi of unity spontaneously emerges from emptiness at the precise moment. Such profound states require direct guidance from a teacher—book learning alone cannot convey it.

During practice:

• At the zi hour (northern water), energy turns rightward
• At the wu hour (southern fire), energy rotates leftward
• The mao (east) and you (west) hours serve as boundaries

This symbolizes:

• The tiger (metal essence) rising from water
• The dragon (wood liquid) manifesting from fire
• Through this circulation, water and fire achieve balance while metal and wood intermingle

The Huanyuan Jing states that the true key to cultivation lies within the human body itself, yet most people remain deluded by superficial appearances. Authentic metal-wood interaction (dragon-tiger coupling) doesn't refer to geographical directions but rather to the movement of yin and yang energies within the practitioner. Sadly, many false cultivators today cannot even explain the basic principles of metal-wood interaction.

The passage concludes by describing the actual phenomenon of dragon-tiger coupling: the southern Li trigram's dragon and northern Kan trigram's tiger resonate with each other—the dragon exhales true Qi while the tiger inhales essential essence, mutually nourishing until they fuse into one. During this process, practitioners must regulate their breathing rhythm to allow the yin and yang energies to naturally intermingle. These instructions originate from the 39th chapter of the Zhixuan Jing's essential cultivation methods.

This scripture primarily discusses the essential techniques and common pitfalls of alchemical cultivation. It first points out that the key to practice lies in understanding the principle of "dragon and tiger" (referring to true lead and true mercury, the fundamental elements of alchemy) uniting. When the divine fire (the fire of intention during cultivation) illuminates the golden region (the western direction associated with metal), true lead (metal) is activated by the fire and rises to combine with true mercury (wood), as evident as the planet Venus passing through the southern noon position. This process occurs as naturally as a cat catching mice or sparrows fearing hawks—when elements are properly matched, the union happens spontaneously.

The text then criticizes common cultivation mistakes: many practitioners fail to grasp the fundamental principles of yin-yang, blindly spending family fortunes on expensive medicinal ingredients, even to the point of losing their spouses and children, yet never attaining the essence. This is because they took the wrong path from the beginning, lacking proper guidance from genuine masters.

Finally, it contrasts orthodox and heterodox cultivation methods: the deviant paths may seem easier to encounter but are difficult to succeed in; the true Golden Elixir (Jindan) path, though hard to encounter (referring to the rarity of opportunity), becomes straightforward once its principles are mastered. The crux lies in observing the initial signs of phenomena and investigating their natural progression from beginning to end—only then can one find the correct path of cultivation.

All beings between heaven and earth, whether large or small, high or low, sentient or insentient, embody the patterns of the Dao (the Way) and mutually reflect one another. For instance, cranes cry at midnight and roosters crow at dawn because they resonate with the Qi (vital energy) of heaven and earth. Other phenomena follow the same principle: the cold cicada inhaling wind, the rhinoceros gazing at stars, the aged mussel cradling the moon, the rugged stone concealing jade, the butterfly's wings opening and closing, the firefly's flickering glow, the cat's pupils contracting and dilating, the deer's tail moving counter to its body, the turtle's breathing, the turtle's shadow, the windbag billowing air, the water droplet absorbing moisture, the lodestone attracting needles, amber drawing mustard seeds, the shadoof (ancient water-lifting device) transporting water, the calamus and rice flowers gathering dew, the snake hibernating, the fish swimming, the dung beetle rolling its ball, bees guarding their eggs, hens brooding, rabbits carrying young, oxen producing bezoars, dragons holding pearls, plum stones forming kernels, melons detaching from their stems, the banana plant greeting spring winds, the phoenix tree accompanying autumn rains, emerald pools reflecting the night moon, and green mountains shrouded in evening clouds—all these are symbols of the Golden Elixir (the core concept of Daoist Neidan/internal alchemy).

Zhang Ziyang (a renowned Neidan master of the Northern Song dynasty) stated that those cultivating the Golden Elixir must thoroughly comprehend the transformations of Yin-Yang and deeply grasp the workings of natural creation—a statement of profound truth. The Five Phases (Wood, Fire, Earth, Metal, Water) restrain yet mutually generate one another: the mother contains nourishment, while the father governs bestowal. The key to alchemy lies in the Five Phases, and the mystery of the Five Phases cannot be separated from the trigrams Kan (Water) and Li (Fire). Kan represents Water, where Metal and Water unite and Water conceals Metal; Li represents Fire, where Wood and Fire accompany each other and Fire harbors Wood—thus forming the Four Symbols (Lesser Yang, Greater Yang, Lesser Yin, Greater Yin). When combined with the Wu Earth (central true intention) within Kan and the Ji Earth within Li, the complete system of the Five Phases emerges.

The Wuzhen Pian (Awakening to Reality) states: the Mercury (symbolizing the Shen/spirit) of the Zhen trigram (Dragon) originates from the Li trigram, while the Lead (symbolizing the original Qi) of the Dui trigram (Tiger) is born from the Kan trigram. Though these two emerge from the "children" (Metal and Wood), they must return to the "mother" (central Earth). The Five Phases must converge at the center to achieve the Golden Elixir. It further explains: without the Wu-Ji Earth (central true intention) in the Kan and Li trigrams, even with the Four Symbols present, the elixir cannot be forged. Precisely because Kan and Li contain true Earth (true intention), the Golden Elixir can return to the primordial state through the union of Yin and Yang. This principle is already abundantly clear.

The method of alchemy involves using Fire to refine Metal and Metal to restrain Wood. If Fire becomes too strong, Water harmonizes it; if Water overflows, Earth checks it—this is the mutual restraint of the Five Phases. Metal generates Water, and Water is the child of Metal, yet Water can in turn generate Metal; Wood generates Fire, and Fire is the child of Wood, yet Fire can in turn generate Wood—this is the reciprocal parent-child relationship of the Five Phases. The father symbolizes heaven, the mother symbolizes earth, and the dynamic interaction of heaven-earth and Yin-Yang forms the fundamental basis of alchemy.

This scripture primarily expounds on the principles and methods of Daoist Neidan (internal alchemy) practice. It begins with the metaphor of celestial and terrestrial energies uniting, and parents conceiving life, to illustrate the foundation of cultivation: just as celestial Qi (Tianqi) descends to combine with terrestrial Qi (Diqi) to generate all things, practitioners must facilitate the interaction between their "heaven" (original spirit, Yuanshen) and "earth" (original Qi, Yuanqi), allowing the Five Phases' essences within the body to harmonize and ultimately form the "sacred embryo" (the nascent form of the internal elixir).

The text references two alchemical classics - "The Great Elixir Formula of the Crimson Dragon" and "Emerald Emptiness Treatise" - emphasizing that authentic cultivation isn't mere abstinence, but rather the condensation and transformation of Jing (essence), Qi (vital energy), and Shen (spirit). Just as the quintessential energies of the Five Phases in nature coalesce into indestructible metals and minerals, humans who can concentrate their vital essences may attain the state of prolonged vision and enduring life.

The crux of practice lies in "focused attention without dissipation" (shen zhuan bu xie): maintaining single-minded concentration like a brooding hen, while understanding that true "non-dissipation" doesn't mean forced suppression, but rather allowing the natural circulation and transformation of Jing-Qi-Shen within the body. Misinterpreting "non-dissipation" as rigid abstinence may instead cause illness. As the Shurangama Sutra states, practicing while clinging to lust is like trying to cook sand into rice - an impossible endeavor.

Finally, the text employs natural phenomena like "a shadow appearing instantly when a pole is erected" and "valleys echoing calls" to illustrate how cultivation must follow cosmic patterns. The resonant interactions in nature occur spontaneously, and practitioners must grasp this principle of natural responsiveness to achieve results. The genuine path of the Golden Elixir requires the dual cultivation of nature and life (xingming shuangxiu) - cultivating both the physical body (life cultivation, ming gong) and spiritual nature (nature cultivation, xing gong). As the "Emerald Emptiness Treatise" states, attempting to prolong life through simple abstinence is impossible; only through proper alchemical methods can one attain longevity.

This passage conveys three key teachings on Daoist alchemy.

The first section elucidates the principle of refining the Golden Elixir (Jindan). Just as the celestial movements of sun and moon create natural resonance, practitioners who align their internal Yin and Yang energies (symbolized as sun and moon) during the full moon—when these luminaries face each other—can attune to cosmic Qi and naturally form the elixir. The terms "sun crow" (日乌) represents the solar Yang essence, while "moon hare" (月兔) signifies lunar Yin essence. "Celestial Hun and earthly Po" (天魂地魄) denote the complementary Yin-Yang energies of heaven and earth.

The second section employs poisonous herbs as a contrast. Deadly substances like wild aconite or croton seeds bring instant death—unpreventable even by King Wen's divination, Confucius' calculations, Bian Que's medical skills, or Wu Xian's rituals. Yet people readily believe in poison's lethal potency while doubting the elixir's life-extending power—a perspective the text deems unwise.

The third section decodes the alchemical term "Riverbank Maiden" (河上姹女). This "maiden" (representing true mercury) originates from the Li trigram (associated with fire). Its designation as "riverbank" derives from its correspondence to the noon earthly branch, linked to the Three Rivers region. This spiritual mercury (神汞) possesses volatile qualities, scattering when exposed to fire. Only through combination with "yellow sprout" (黄芽, true lead) can it be stabilized to form the elixir. The passage concludes by emphasizing universal Yin-Yang complementarity: just as a hen's unfertilized egg cannot hatch, alchemical success requires perfect balance of feminine and masculine, yielding and firm energies.

The harmonious interaction of Yin and Yang constitutes the true path, while favoring either Yin or Yang exclusively leads to imbalance. It's as impossible as a hen attempting to hatch chicks without mating with a rooster—pure Yang cannot generate life, nor can pure Yin take form. The Wuzhen Pian (Awakening to Reality) wisely states: Don't imagine solitary Yin can produce Yang; practicing one aspect alone only weakens further. Those methods that exhaust the body are fundamentally misguided, and blindly cultivating Qi or swallowing mists is sheer folly. People vainly search for external alchemy (gold and mercury), when will they witness the true Dragon-Tiger union (the internal alchemy of Yin-Yang harmonization)? I urge all to trace life back to its source—returning to the root is the true spiritual medicine.

When one turns inward in contemplation, allowing Yin and Yang to naturally merge within, hardness and softness complementing each other, and the Three Treasures (Jing, Qi, Shen) uniting as one, what need is there to seek externally? The Huanyuan Pian (Returning to the Origin) teaches: Regulating the internal Yin and Yang is the foundation. The Yuzhi Shu (Jade Wisdom Text) similarly states: Yin and Yang are not gathered from others. The Huan Dan Pian (Elixir Return Classic) clarifies further: Yin and Yang must be drawn from one's own true nature—how can one abandon the self to seek outside? The Cuixu Pian (Jade Void Treatise) warns: Better to practice peaceful methods than tread the depraved path of licentious practices. The ancients said, "Heaven, earth, and all things ultimately return to the source"—one must grasp the secret of Wuwei (non-action) and stillness. The Golden Elixir path is inherently a practice of serene non-action. Yet some, deluded by heresy, believe elixir refinement requires women—what absurdity!

The natural movement of heaven and earth is like fire rising effortlessly or water moistening downward without coercion. This fundamental principle never changes. Within our bodies exists a microcosm of heaven and earth, with its own water and fire in motion—these transformations occur spontaneously, not through forced effort. The Zhi Xuan Pian (Pointing to the Mystery) explains: One must understand the path where east and west (symbolizing Kan and Li, water and fire) meet, centered on harmonizing the middle Dantian (heart) and lower Dantian (abdomen). The human body mirrors heaven and earth: the head as heaven, the abdomen as earth. By focusing inward—neither forcing growth nor neglecting, regulating breath without tension—natural opening, closing, exhalation, and inhalation arise, perfectly aligned with cosmic rhythms. When the moment arrives, Qi movement stirs spontaneously, like wind through a flute. Fire (Yang Qi) ascends from below the navel, while water (Yin essence) pours toward the crown—such mystical transformations occur naturally, requiring no exhausting effort. This is the Dao, the most fundamental law of existence.

Wei Boyang (Lord Wei), concerned that practitioners might not comprehend the patterns of Yin-Yang transformation within the human body, employed natural phenomena such as celestial movements and the interaction of water and fire as metaphors, explaining these principles with remarkable clarity and thoroughness.

Observing the state of conjugal union, the natural merging of firm and yielding forces cannot be separated—this is not a result of human manipulation. The Quanzhen Ji states, "When Qi is harmonized and the Shen (spirit) is tranquil, union naturally occurs." The Cuixu Pian uses the metaphor of a husband and wife's union, where Jing (essence) and blood coalesce to form an embryo. Here, the term "conjugation" actually refers to the natural resonance of Yin and Yang Qi within the body, the fusion of Shen and Qi. Terms like "female and male" or "husband and wife" are merely allegorical. The Huanyuan Pian points out: When Shen and Qi return to their origin, and body and mind revert to their innate truth, this mysterious pivotal point (the crux of cultivation) is truly understood by few. When Shen enters Qi, and Qi naturally merges with Shen, there indeed arises a state where firmness and softness intertwine inseparably—this occurs entirely beyond human control. We can only observe that such phenomena exist, yet cannot fully articulate their underlying principle—how profoundly mysterious!

Just as male infants are born face-down and female infants face-up, these characteristics are determined at conception. Not only is this evident at birth, but even in death the posture remains—drowned men float prone, while women float supine, and the same holds true for animals. This is not taught by parents but follows the natural order of Yin and Yang Qi's opening and closing sequence during conception. Chu Huagu explains in the Quyi Shuo: Yang Qi's expansiveness forms males, while Yin Qi's containment forms females. Li Yuxi, annotating the Xinyin Jing, states: Men and women share the same essence, yet their differences in Yin and Yang arise from the sequence of resonance and interaction. Yang Qi gathers in the face, hence men's faces are heavier, causing them to be born prone; Yin Qi gathers in the back, hence women's backs are heavier, causing them to be born supine.

Here, Wei Boyang discusses the path of serene cultivation yet delves into the distinctions between male and female postures. His purpose is to help practitioners thoroughly grasp the natural laws governing the body's Yin and Yang, upper and lower aspects, and comprehend the spontaneous principles of cosmic creation. The Kan trigram (symbolizing water, the moon) represents the masculine, while the Li trigram (symbolizing fire, the sun) represents the feminine. Just as the sun illuminates all things and the moon reflects its light, the movement of Yin and Yang Qi within the human body follows this same natural order.

The waxing and waning of the moon does not harm its essential nature, for this results from the mutual support of Yin and Yang. When Yang Qi becomes imbalanced, Yin Qi encroaches upon the light, forming the dark new moon. During solar and lunar eclipses, when illumination is obscured, Yang Qi withdraws its form while Yin Qi prevails—thus creating celestial anomalies.

When the central Yang line of the Qian hexagram (representing Heaven/Yang) intersects with the Kun hexagram (representing Earth/Yin), it forms the Kan hexagram (representing Water), hence Kan symbolizes the middle son. When the central Yin line of Kun intersects with Qian, it forms the Li hexagram (representing Fire), thus Li symbolizes the middle daughter. Yet crucially, Li's fundamental structure remains Qian-based—its central line being Kun's Yin line—manifesting Yang containing Yin, hence its solar symbolism. Conversely, Kan's foundation is Kun-based—its central line being Qian's Yang line—manifesting Yin containing Yang, hence its lunar symbolism.

The Wuzhen Pian states: "Though Li occupies the solar position, it symbolizes the feminine; though Kan is assigned to the lunar palace (the Toad Palace signifies the moon), it represents the masculine." Those who fail to comprehend this principle of inverted Yin-Yang should refrain from reckless commentary. Indeed, Daoist practitioners must not approach these profound truths with shallow understanding. The sun bestows light like a husband's way, while the moon extends its pure radiance like a wife's way. To equate the moon (Kan) with masculinity is to treat the wife as husband; to equate the sun (Li) with femininity is to treat the husband as wife—this is the profound mystery of inverted Yin-Yang.

The sun and moon maintain their cyclical transformations without damaging their essence precisely through this mutual nourishment of Yin and Yang. Eclipses occur through orbital conjunctions: lunar eclipses when Earth blocks sunlight to the moon, solar eclipses when the moon obstructs sunlight to Earth. Thus solar eclipses always occur during the new moon (first lunar day), lunar eclipses during the full moon (fifteenth lunar day)—though conjunctions don't always produce eclipses unless aligned perfectly on the orbital plane.

The Perfected Wei Boyang (author of Zhouyi Cantongqi) used celestial motions to illustrate alchemical principles, particularly emphasizing the phenomena of lunar phases and eclipses—a teaching of profound significance. Shouldn't cultivators turn inward to seek their bodily "sun and moon," observing their internal "new and full moons"? The Shangqing Ji declares: "Observing the Big Dipper's celestial rotation, I suddenly grasped the immortal's secret—that spark of true Yang born in the Kan position (kidney Water) replenishes Li Palace's (heart Fire) deficiency. Since antiquity, the cosmic interplay of Qian-Kun and Li-Kan has mirrored the ceaseless solar-lunar dance." This year's winter solstice finds plum blossoms still blooming in snow, as ancient sages entered seclusion on this day, severing worldly ties to contemplate the mystery of life's germination. All living beings contain this generative principle, whose pivotal moment lies between the Zi hour (midnight) and Hai hour (late night). The Creator operates in soundless perfection—the mystery of fire emerging from water dwells between the Xu and Wei lunar mansions (constellations of the northern Black Tortoise). Now comprehending this truth feels like the golden crow (sun) flying into the toad palace (moon), directly revealing celestial mechanics. These truths fully verify the authenticity of Perfected Wei's teachings.

This scripture elucidates the interaction of Yin and Yang energies within the human body and the principles of alchemical refinement.

It first points out that the human body inherently contains both Yin (feminine) and Yang (masculine) energies, existing as naturally as the relationship between husband and wife. Practitioners should observe this intrinsic interplay with a mind of purity and Wuwei (non-action), avoiding any distorted interpretations driven by improper thoughts.

Next, it employs the mutual generation and restraint of the Five Phases (Wood, Fire, Earth, Metal, Water) to explain energy transformation: metal (Metal Phase) melts into liquid (Water Phase) when heated (Fire Phase), and water’s flowing nature makes it difficult to control. Yet when fire becomes too intense, it transforms into earth, which in turn restrains water’s movement. This metaphor illustrates the delicate balance required in refining energies during cultivation.

In the interaction between male (Yang) and female (Yin), the masculine energy is active and expansive, while the feminine energy is receptive and inward-drawing. If Yang energy disperses excessively (overflowing beyond measure), Yin energy naturally arises to counterbalance it, ensuring that the Hun (ethereal soul) and Po (corporeal soul) mutually regulate each other and prevent indulgence. As the Mirror for Compounding the Medicine states, the natural circulation of water and fire energies within the body means that refining lead (Yin) and mercury (Yang) into the Golden Elixir requires moderation.

The key to alchemical refinement lies in harmonization: neither too cold nor too hot, advancing and retreating at the proper time. Gathering medicinal energies (collecting Qi) and regulating the "fire timing" (controlling the intensity of practice) must be done neither hastily nor sluggishly, maintaining a state of peaceful fusion. The Treatise on Returning to Life emphasizes the mutual support of firmness and softness, with even and balanced breath—its core principle being harmony without harm.

Finally, it discusses the relationship between alchemical materials: cinnabar (symbolizing the essence of Wood) must combine with Metal-phase substances to stabilize. Mercury, being volatile and hard to control, must be paired with lead to settle. Metal and Water unite, Wood and Fire accompany—these four elements blend chaotically to form the equilibrium of dragon (Yang, odd number) and tiger (Yin, even number), much like how the Black Tortoise of the North (Water) and the Fire of the South mutually generate and resonate.

This passage explains the relationship between the "Four Symbols" and the mutual generation-restraint cycles of the Five Phases in Daoist Neidan (internal alchemy) practice. The Four Symbols refer to the Azure Dragon of the East (associated with Wood), the White Tiger of the West (Metal), the Vermilion Bird of the South (Fire), and the Dark Warrior of the North (Water), which originally reside separately in their respective directions. However, during cultivation, Metal and Water merge, while Wood and Fire combine.

Specifically, the metallic energy of the Western White Tiger descends to blend with the northern waters, while the wooden energy of the Eastern Azure Dragon ascends to unite with southern fire. Thus the White Tiger transforms into a Black Tiger (Metal entering Water), and the Azure Dragon becomes a Crimson Dragon (Wood joining Fire). When these four energies of Metal, Water, Wood and Fire coalesce, they form the undifferentiated Taiji (Supreme Ultimate) state of primordial chaos. When separated, they manifest as the two qi of Yin-Yang: the yang dragon (mercury, symbolizing original Shen/spirit) rises from the Li trigram (southern fire), while the yin tiger (lead, representing original Jing/essence) forms within the Kan trigram (northern water).

Zhang Ziyang (a renowned Northern Song dynasty Neidan master) profoundly realized this principle, concluding that "the Four Symbols never depart from the Two Forms." Many later practitioners misunderstood the true meaning of the Four Symbols—some mistakenly took the eyes, ears, nose and tongue as the symbols, while others erroneously compared the liver and lungs to dragons and tigers, leading to increasingly distorted interpretations.

The text further correlates the five viscera with the Five Phases: the liver (Wood, azure) symbolizes the father; lungs (Metal, white) the mother; heart (Fire, red) the daughter; spleen (Earth, yellow) the ancestors; and kidneys (Water, black) the son. This isn't literal alchemy using organs, but rather employs them as metaphors for the Five Phases' generative cycles—Metal generates Water (lungs and kidneys), Wood generates Fire (liver and heart). The Cuixu Treatise clarifies that bodily fluids, qi and blood serve merely as auxiliary tools in cultivation—the true Golden Elixir path is achieved through the transformation of formless, substance-free Jing, Qi and Shen.

This passage explains the mutual generation and restraint relationships of the Five Phases in Daoist Neidan (internal alchemy) practice, along with the operational principles of Yin-Yang energies within temporal and spatial frameworks.

The text first clarifies the correspondence between the five organs and the Five Phases: The spleen belongs to Earth, serving as the ancestral foundation since Metal (lungs) and Wood (liver) both originate from Earth. Although the kidneys (Water) are positioned last in the Five Phases sequence (where Water actually ranks first), the daily Qi circulation begins at the Zi hour (associated with kidneys), then progresses sequentially to the liver, heart, spleen, and lungs. Notably, while there are five organs, they're referred to as the "Three Substances" because Metal-Water naturally combine and Wood-Fire inherently pair, forming three functional groups when combined with the central Earth element (Wuji soil).

The discussion then shifts to Yin-Yang energy dynamics: The complementary forces of rigidity and softness (Yin-Yang) propel each other through twelve earthly branches in cyclical motion. The phrase "Dragon West, Tiger East" references the Green Dragon and White Tiger's alignment with Mao-You (east-west axes), symbolizing the interaction of Metal and Wood energies. "Punishment and Virtue" represent Yin-Yang's characteristic behaviors - Punishment governs austerity and contraction (like autumn), while Virtue promotes growth and germination (like spring). This is illustrated through seasonal examples: the withering of elms in the second month (Mao month, with its celestial marker at River Chief - Xu position containing Metal's lethal Qi) contrasts with wheat's growth in the eighth month (You month, with its Heavenly Stem - Chen position containing Wood's vital Qi).

Finally, the text addresses spatial correspondences: The Zi-Wu (north-south) axis forms the meridian, while Mao-You (east-west) creates the latitude. Mirroring the sun's path, during spring's western trajectory the second-month Mao hour aligns northeast, whereas autumn's eastern course positions the eighth-month You hour southwest. During alchemical practice, when the cauldron's Yin-Yang energies rotate (through the interplay of celestial markers), it activates the energetic flow between Green Dragon and White Tiger forces.

This passage elucidates the profound principles of Yin-Yang transformation and the timing of internal fire (huohou) in Daoist Neidan (internal alchemy) practice. The phrase "dragon west, tiger east; midnight south, noon north" actually describes the movement patterns of Yin and Yang energies within the human body, mirroring the celestial movements of heaven and earth. Wei Boyang (Master Wei) employed these symbols to enlighten later practitioners, yet regrettably, many remain fixated on literal interpretations without turning inward to comprehend their true significance.

The "cycle of one and nine" refers to the perpetual circulation from one to nine, analogous to how humans stand with their heads reaching toward heaven (nine) and feet grounded on earth (one), with Qi circulating ceaselessly between them. "Containing the primordial in Xu and Wei" speaks of the initial stirring of primordial Qi during the astrological hours corresponding to the Xu and Wei lunar mansions (the transition between hai hour [9-11 PM] and zi hour [11 PM-1 AM]). "Sowing essence at zi hour" refers to the generation of true essence when vital energy reaches the coccyx pass (at the base of the spine) during the zi hour.

The mystery of Golden Elixir cultivation lies in this: the primordial Qi of pre-heaven (cosmic primordial energy) remains quiescent and undifferentiated in a state of chaos, while the acquired Jing-Qi (vital essence of postnatal life) moves responsively after the differentiation of Taiji (Supreme Ultimate). The primordial single Qi transforms into postnatal true essence, just as the Cuixu Treatise states: "half a pound of true mercury, half a pound of lead" - requiring refinement precisely during the zi hour, that critical moment of Yin-Yang transition.

Particular attention must be paid to "Xu and Wei," which denote the pivotal juncture between hai and zi hours when Yin energy peaks while Yang energy first emerges. The zi hour marks the initial stirring of Yang. Missing this opportune moment causes Yin and Yang to separate like mother and child parting ways. Those who truly understand these principles must thoroughly comprehend the laws governing Yin-Yang transformations within the human body and the creative processes of heaven and earth.

The Zhouyi Cantong Qi employs vivid metaphors to expound the principle of Yin-Yang union in the Golden Elixir (Jindan) path. Drawing from the "Guanju" poem in the Book of Songs, it uses the allegory of a nobleman courting a virtuous maiden to symbolize the harmonization of Yin and Yang energies within the human body (in Neidan terminology, the heart-mind is often called the "Charming Maiden" [Chanü] while kidney Qi is termed the "Infant" [Ying'er]). Just as the Black Tortoise (Xuanwu, the northern celestial creature) consists of intertwined turtle and serpent, Yin and Yang must mutually depend on each other.

The text illustrates through multiple contrasts: Though two women dwelling together may be beautiful, they can never form a true marital union—no matter how eloquently persuaders like Su Qin or Zhang Yi might argue. Similarly, if the ingredients for alchemy are mismatched or improperly proportioned, even with the Yellow Emperor (Huangdi, legendary founder of alchemy) attending the furnace, the Great Unity deity (Taiyi) tending the flames, the Eight Sages (Bagong) and Prince of Huainan (a Han dynasty alchemist) compounding the materials, or lavish altars with jade steps offering unicorn meat and phoenix jerky alongside prolonged prayers—it would be as futile as patching a pot with glue or treating sores with sal ammoniac (naosha). Worse still, such efforts become counterproductive, like adding ice to the cold or hot soup to the fevered.

The passage ultimately reveals the core principle: Golden Elixir cultivation fundamentally requires Yin-Yang equilibrium. As the I Ching shows, when the Dui trigram (representing the youngest daughter) resonates with the Gen trigram (youngest son), it forms the "Xian" (Influence) hexagram of mutual attraction. Yet when the Li trigram (middle daughter) dwells with Dui, their divergent aspirations create the "Kui" (Opposition) hexagram. To rigidly interpret phrases like "the male cannot dwell alone, nor the female live solitary" as requiring literal female involvement in alchemy completely misses the scripture's intent—using gender symbolism to represent the internal interplay of Yin and Yang.

Those who promote heretical paths mock orthodox cultivation methods (referring to the alchemical practices advocated in the Zhouyi Cantongqi or The Kinship of the Three) as impractical and outdated. Such individuals remain utterly unaware of their own shallow ignorance.

(Note: The Zhouyi Cantongqi is a foundational Daoist alchemical scripture that integrates Yijing (Book of Changes) theory with internal alchemy (Neidan). This passage criticizes those who dismiss authentic alchemical traditions without understanding them. True cultivation follows specific principles—seemingly rigid yet profoundly meaningful—while heterodox teachings often rely on novelty to mislead the uninformed.)