《還金述》

Interpretation of the "Returning Gold Treatise":

This classic is divided into three sections (upper, middle, and lower). In the preface, author Tao Zhi shares his insights from a decade of studying the "Golden Azure Scripture," realizing that the "One" (representing the Water phase) initiates the Five Phases (Wood, Fire, Earth, Metal, Water), containing the dark mysterious Qi (vital energy) of the North and embodying five colors. Practitioners who align with this principle can connect with the creative transformations of heaven and earth.

Tao Zhi critiques common misconceptions among alchemists of his time: the mistaken belief that mercury could be directly refined into the Golden Elixir (Jindan), or that cinnabar and mercury naturally form the "River Chariot" (a Neidan term for the pathway of essence-energy circulation). True mercury actually originates from lead, and genuine cinnabar derives from gold. Forcibly combining external substances for alchemy is like gluing flowers to branches to fake fruit—it only depletes Jing (essence).

The upper section explains:

Ancient sages used the Bagua (Eight Trigrams) from the Yijing to elucidate alchemical principles because the Dao aligns with cosmic laws. The Taiji (Supreme Ultimate) divides into Yin-Yang energies, which then generate the Three Powers (heaven, earth, humanity). The interaction of Qian (heaven) and Kun (earth) transforms all things, while the union of Kan (water) and Li (fire) produces the mutual generation of metal and water—the core principle of alchemy. Like the marital union of man and woman where energies blend to create infinite transformations, or the sun and moon's movement forming seasonal cycles that nourish life—all manifest the Dao.

The "Inner Scripture of Yellow and White" records Shennong's saying: "Know the white, guard the black, and death cannot claim you"—where "white" refers to gold's essence (not ordinary gold) and "black" denotes true mercury (not common quicksilver). The "Dragon-Tiger Scripture" similarly states that though lead appears black externally, it conceals golden splendor (the prenatal Qi within), which alchemy calls the "Azure Dragon" (symbolizing eastern Wood energy).

This passage elucidates the principles of mutual generation and restraint among the Five Phases (Wuxing) and the配伍关系 (compatibility relationships) in Daoist alchemy, employing symbolic language to describe interactions between alchemical materials:

Yellow lead (an alternate name for lead) pertains to the Wood Phase, numerically corresponding to three. Though coarse in appearance, it contains essential purity within. Jade (symbolizing pure substance) represents the White Tiger (western celestial creature), indicating mercury, which belongs to the Earth Phase with numerical correspondence to five. Thus when "three (Wood) and five (Earth) harmonize," the eight alchemical minerals form a complete system. These numbers three and five reference the directional relationship between Earth and Wood, combining to form the numerical foundation of the Eight Trigrams (Bagua).

The scripture employs maternal imagery to illustrate the generative relationship between metal (lead) and water (mercury): metal generating water resembles a mother nurturing her child, while water containing metallic properties resembles a fetus concealed in the womb. This mutual containment only manifests through refinement. Just as the eldest son inherits paternal qualities yet depends on maternal nourishment, cinnabar (dan砂) originates from metal (lead), with mercury flowing within like a son continuing his father's work—this generative relationship accords with the natural Dao.

The Qian Tong Jue states "the mysterious white (lead-mercury) generates the Golden Lord (elixir)," demonstrating cinnabar's origin from lead. The Jin Bi Ge mentions "red marrow (cinnabar essence) transforms into mercury," proving mercury isn't externally obtained but born from heaven-earth (qian-kun) interaction. This state of imminent generation contains wondrous patterns, like celestial signs (tianfu) manifesting—heavenly qi descending while earthly qi ascends, their yin-yang union producing flowing mercury pearls (liuzhu).

The triad of cinnabar, flowing mercury, and golden matrix (lead) corresponds to the Three Powers (heaven-earth-humanity) and Five Phases, transcending ordinary matter. The Cantong Qi uses analogies of sowing millet to reap millet or hatching eggs to obtain chicks: emotional consciousness (qing) originates from innate nature (xing), yet reciprocally influences it. This interdependence resembles how lead and mercury, though seemingly dissimilar, must combine in practice.

Finally, it emphasizes that alchemy must follow the principle of like attracting like: though lead-mercury bears diverse names (qian-kun, female-male, metal-water, earth-wood, emotion-nature, dragon-tiger etc.), they must combine according to categorical compatibility. Water restrained by earth yet requiring earth to manifest efficacy, metal generated by earth—these cyclical relationships of restraint and generation form a complete circuit. Mercury occupies no conventional Five Phase position, nor does cinnabar represent simple dragon-tiger pairing, hence substances of differing natures cannot be forcibly combined. As ancient verses warn "do not destroy me," this cautions against violating these fundamental laws.

This scripture primarily discusses the relationship between lead and mercury in alchemical practice, and their crucial importance in Daoist cultivation and elixir refinement. Here is the vernacular interpretation:

Lead holds paramount importance in alchemy—it preserves life and nature, much like ensuring a carriage returns home intact. If the lead breaks, it's as if the carriage is damaged, rendering cultivation efforts futile. Within lead resides gold, and within that gold lies an even more precious treasure. Practitioners must discern this true treasure through refining both mind and form to attain the Dao. The sages repeatedly emphasize: it's better to cultivate the gold within lead than to directly pursue the treasure within gold. This admonition reveals the correct path for later practitioners.

The dragon and tiger (representing yin and yang qi) are fundamentally one. Those who understand this principle find cultivation as simple as turning one's palm; those who don't perceive it as difficult as ascending heaven. Regrettably, people often abandon the easy for the difficult—the harder they strive, the further they stray from truth. Regarding alchemical materials, some advocate using lead while others favor mercury. Yet using mercury alone cannot establish heaven and earth (qian and kun), nor distinguish hardness from softness. Only by combining it with lead can the golden water (essential elixir) be produced, achieving the alchemical return to primordial origins.

Since ancient times, alchemical verses praise lead's efficacy while rarely mentioning mercury's subtleties. If both must be used together, why not consider them comprehensively? To take mercury as primary with lead as auxiliary is to mistake the branch for the root. This is the author's intent, yet later interpretations often deviate, becoming as futile as planting rice on stone or catching fish in trees.

True alchemical secrets can't be fully conveyed through words—they require oral transmission from genuine masters. The difference between knowing and not knowing spans the distance between a thousand miles and the palm of one's hand. Those not truly walking the path can hardly discern the truth. Hence the saying: "Those who know don't speak; those who speak don't know"—the truth often dwells between speech and silence.

The middle section clarifies:

Anyone claiming golden elixirs can be refined using mercury alone is deluded; those asserting cinnabar grants immortality understand nothing of the Dao. While cinnabar and mercury (the "charming maiden" being mercury's alias) are indeed essential alchemical materials, one must recognize that the true secret lies in the lead-mercury essence (the treasure within lead). The precious substance within lead constitutes the core of cultivation.

This passage elucidates the core principles of Daoist alchemy through metaphorical language, revealing the essentials of internal cultivation:

Just as humans possess emotions and innate nature, cinnabar (sha) and mercury (gong) are not foreign substances to lead in alchemical practice. Cultivating the "Way of Three-in-One" (San Yi Zhi Dao) — the unified method of refining Jing (essence), Qi (vital energy), and Shen (spirit) — requires harmonizing emotions with innate nature to return to one's origin. The method for refining the Golden Fluid (Jinye, an alchemical term) involves using gold to nourish mercury, thereby enabling the hun and po souls to return to their primordial state.

If external impurities are introduced as emotional influences, they cannot unite with innate nature; if common mercury substitutes for true alchemical mercury, it cannot fuse with lead. How then can the Three Dantian (upper, middle, and lower energy centers) stabilize? How can the Eight Minerals (ba shi) manifest their wondrous effects? The so-called Eight Minerals are actually alternative names for the "Three-Five" (representing Yin-Yang and the Five Phases). As the Cantong Qi states: "Names are established to define emotions; characters are employed to sustain innate nature."

Gold represents external operation (emotion), while mercury symbolizes internal regulation (nature). Using gold to temper mercury means investigating emotions to align with innate nature. This resembles how the Azure Dragon of the East (wood) resonates with the White Tiger of the West (metal) — the dragon representing emotion, the tiger representing nature. The interdependence of emotion and nature embodies the principle of returning to the origin.

The "Flowing Pearl of the Great Yang" (another alchemical term) requires the tempering of Golden Splendor (Jinhua) to solidify into form. This mirrors the revolutions of Qian (heaven) and Kun (earth), harmonizing Yin and Yang in accordance with the Triune Pattern of heaven-earth-humanity, ultimately forging genuine cinnabar. The profoundest truths often appear simplest — like nature's effortless creation of myriad colors without artificial carving. True cinnabar isn't ordinary vermilion or mercury, but refers to pure substances like "White Horse Teeth" (superior cinnabar).

Through alchemical terminology, this scripture actually expounds the cultivation principle of mind-body harmonization: only when internal emotions and nature unite, when Yin and Yang achieve equilibrium, can one attain the state of returning to primordial authenticity.

The Huan Jin Shu (Treatise on Returning to Gold) primarily elucidates the principles of Yin-Yang and the Five Phases (Wood, Fire, Earth, Metal, Water) in Daoist alchemy, along with the cyclical patterns of heaven and earth.

The first section states:

When cinnabar and mercury are refined in alchemical practice, white smoke soon arises—how could these substances decompose into water and purslane? Those who grasp this truth can immediately discern the authenticity of an alchemist. By finding a genuine practitioner, one preserves the purity of mind and avoids delusion, thereby drawing closer to the Dao (the Way). When the foundation is upright by nature, why must one retreat to remote mountains or abstain from grains to attain the Dao? Thus, the text reiterates the origin of innate nature and emotions, analyzes the mysteries of cinnabar and mercury, and explains the profound symbolism employed by ancient sages—so later generations may avoid being misled by superficial appearances.

The second section expounds:

The scripture states that white represents the essence of Metal, while black symbolizes the root of Water. Water serves as the pivot of the Dao (the Way), and its numerical value is one. It further declares, "Know the white yet guard the black, and divine illumination (Shenming) will come of itself," revealing that the essence of the Supreme Mystery (Tai Xuan) is the foundation of the Dao. The revolutions of heaven and earth and the transformations of Yin-Yang follow natural patterns, mirroring the work of creation. By calculating the lunar phases (the two crescents), the eight days of each crescent combine to form the body of Qian (Heaven) and Kun (Earth). Referencing the sixty-four hexagrams, each with six lines, yields 384 lines in total—embodying the arcane mechanisms of heaven and earth. The numerical configurations of the Qian hexagram sum to 216, while Kun's sum to 144; extended, they produce 11,520 variations, corresponding to the number of all things. Heaven’s number is 25, Earth’s is 30, and their combined total of 55 symbolizes cyclical transformation.

Yang Qi (vital energy) accumulates to form heaven, while Yin Qi condenses to form earth. When heaven and earth become closed off, divine illumination (Shenming) manifests. Though the mysteries of creation are boundless, they are fully expressed in the interplay of Metal, Wood, Water, Fire, and the seasonal transitions of cold and heat: the alternation of spring, summer, autumn, and winter, day and night, reflects the action of Yang; the sequences of Metal generating Water, Water generating Wood, Wood generating Fire, and Fire generating Earth represent the action of Yin. Earth overcomes Water, Water overcomes Fire, Fire overcomes Metal, and Metal overcomes Wood—this dynamic of mutual generation and restraint creates cycles of flourishing and decline, harmonizing with the four seasons to nurture all things. The sun embodies the essence of Yang, while the moon holds the soul of Yin. Metal is born of the moon (symbolized by the Kan hexagram, representing the masculine), and pearls are born of the sun (symbolized by the Li hexagram, representing the feminine). As the essence of the moon, Metal occupies the Yang position, eternally uniting with the Qi of the Li hexagram, corresponding to the transformations of Yin lines.

This passage from the Huanjin Shu (Treatise on Returning to Gold) elucidates the core principles of Daoist alchemy (Neidan), using the transformations of heaven, earth, and Yin-Yang as metaphors for the alchemical process:

Heaven and earth nurture spiritual energy (Qi), while the sun and moon contain refined essences (Jing). Just as extreme Yin inevitably transforms into Yang (as in the adage "when misfortune reaches its limit, fortune arrives"), metals refined in blazing fire never lose their luster. Since the dawn of creation, the sun and moon have remained radiant—mirroring the alchemical process where "gold and wood" (symbolizing lead and mercury) operate internally, while "water and fire" (representing temperature control) coordinate externally. Success requires continuous cyclical movement, akin to heaven's ceaseless dynamism.

The sun's brilliance never diminishes but grows more potent—just like the wondrous efficacy of alchemy. Only heaven, earth, sun, and moon endure eternally while nurturing all things. Alchemy must emulate the pairing of dragon and tiger (symbols for lead and mercury), following cosmic patterns and aligning with Yin-Yang measurements, allowing the elixir's transformations to unfold as naturally as pearls joining seamlessly.

Ancient sages could create all things and transcend life-death boundaries through alchemical cultivation. This profound operation is unfathomable—those who receive the true transmission gain mastery over heaven and earth, ascending from mortal to sagehood (ji sheng). Their names are recorded in the immortal registers (jin bu), standing alongside the Yellow Emperor and Lord Lao (Laozi). Yet obtaining this transmission requires proper discipleship; superficial claims cannot be trusted.

Modern practitioners fail to comprehend the divine truth or cosmic principles, obsessing over literal texts while unaware that the ancients took the crucial secrets with them. Those pedantic scholars debating in the wilderness—how could they be true prophets? Just as alchemy requires the qian-kun (crucible) to obtain cinnabar and mercury, or the "Golden Lord" (lead) to facilitate the dragon-tiger coupling, proper tools and knowledge are indispensable.

The concluding verse summarizes with poetic imagery:

Immortals clapping hands can shape snow into spheres (symbolizing exquisite alchemical techniques),

But transforming yellow blossoms (perhaps preliminary materia) into the Purple River Chariot (supreme elixir) remains arduous.

When "mother and son" (lead-mercury) melt into liquid,

Their metamorphosis mirrors the ninefold cycled Golden Elixir (the highest alchemical achievement).

(The entire text employs natural phenomena to illustrate alchemical theory, emphasizing the necessity of authentic lineage transmission and adherence to Yin-Yang principles to achieve the Golden Elixir.)