《大丹鉛汞論》

Discourse on the Great Elixir's Lead and Mercury

By Jin Zhupo of the Tang Dynasty

Part One

The foundation of alchemy lies in the application of lead and mercury. Lead (representing yin energy) belongs to yin, is black in color, and corresponds to the Black Tortoise of the North. In the Bagua (Eight Trigrams), it aligns with the Kan trigram (symbolizing water) and the celestial stems Ren and Gui, which represent water. Since water generates metal, it contains a white metallic quality, corresponding to the White Tiger of the West, the Dui trigram (symbolizing marsh), and the celestial stems Geng and Xin, which represent metal. Mercury (representing yang energy) belongs to yang, is azure in color, and corresponds to the Azure Dragon of the East, the Zhen trigram (symbolizing thunder), and the celestial stems Jia and Yi, which represent wood. Since wood generates fire, cinnabar contains mercury, is red in color, and corresponds to the Vermilion Bird of the South, the Li trigram (symbolizing fire), and the celestial stems Bing and Ding, which represent fire.

Thus, the Kan trigram represents water, the moon, and lead, while the Li trigram represents fire, the sun, and mercury. This correspondence is absolutely precise. I (the author) once repeatedly failed in my alchemical pursuits until a master instructed me: "Heaven (yang) is born from Kan (yin), and Earth (yin) is born from Li (yang)." Through the mutual interaction of Kan and Li, the union of the sun and moon, the mutual restraint of lead and mercury, and the cyclical transformation of the dragon and tiger (referring to yin and yang qi), the Golden Elixir (Jindan) can be achieved. The specific method involves first using lead from water to subdue mercury from fire, then refining true lead from this mercury, and finally using true lead to subdue the "soul of mercury" to obtain true mercury. In this way, external alchemy (Waidan, referring to the crafted elixir) fully mirrors the creative processes of Heaven and Earth.

From this, I grasped the profound principle of the "inversion of the Five Phases (Wuxing)": the dragon (yang) emerges from fire, while the tiger (yin) is born from water. The alchemical scriptures speak truthfully: "Using lead to control mercury yields the essence of mercury; when mercury is restrained by lead, the true metal within water is obtained." Lead and mercury mutually restrain each other, with the "Yellow Matron" (Huangpo, referring to central earth, the mediator harmonizing yin and yang) maintaining balance at the center. Herein lies the Dao of external alchemy.

Part Two

Specific Refining Method:

1. Take eight taels (approximately 296 grams) of pure lead and combine it with four taels (approximately 148 grams) of natural silver. After smelting, obtain eight taels of "lead yellow flower."

2. Separately grind eight taels of cinnabar into fine powder.

3. Place both materials into the alchemical cauldron and refine them through repeated cycles of water and fire for three "rotations" (a unit of alchemical fire phases).

4. The mercury substance will transform and stabilize, becoming the foundational material for elixir-making, capable of enduring indefinitely.

(Note: In ancient measurements, one tael was approximately 37 grams, and a "rotation" refers to a cyclical period of alchemical refinement.)

This scripture primarily discusses the application and refinement methods of lead and mercury in Daoist alchemical practices.

The first section explains the fundamental principles of alchemy:

Black lead (an alchemical material) is gathered from mountains and marshes, referred to as "Lead's Yellow Flower White Tiger." Mercury extracted from cinnabar (another alchemical material) is called "Jade Liquid Azure Dragon." Taking eight liang (an ancient measurement unit) of each material symbolizes the union of heaven's Yang and earth's Yin. These are sealed in the alchemical furnace where the mutual support of water and fire enables the lead and mercury to harmonize, ultimately refining into the Dragon-Tiger Great Elixir (a superior alchemical product).

The second section cites teachings from Master Zhang and Master Zhongli:

Cinnabar stands foremost among the eight minerals (key alchemical materials) as it contains mercury; lead ranks first among the five metals as it contains silver. Mercury is easily extracted, while silver proves difficult. When lead and mercury are combined in refinement, they yield precious elixirs.

The third section describes the "Three Natures Converging in the Primordial Palace" method:

Using mother-cinnabar to envelop spirit-cinnabar, placed within a lead-yellow Taiyi vessel (alchemical container) for refinement. Then wrapping cinnabar with spirit-cinnabar, and spirit-cinnabar with mother-cinnabar for further refinement. After seven days, the three unite to form what's called the "Four Symbols"—a secret method transmitted by immortals.

The fourth section continues the refinement process:

The aforementioned materials undergo another seven days of refinement before being ground into fine powder, which can be endlessly replenished for use.

The fifth section details the refinement of "White Snow" (an alchemical substance):

Mixing four liang of White Snow with raw orpiment in a large vessel for seven days yields snow-white powder. This powder possesses remarkable efficacy for various transformations (alchemical conversions).

The sixth section explains converting White Snow into yellow powder:

Pounding White Snow into white powder enables further transformations.

This scripture meticulously records ancient Daoist alchemical techniques, detailing material ratios, refinement durations, and methodologies. These practices were considered essential pathways to immortality in ancient times, offering modern readers insight into the foundational principles and operational methods of Daoist alchemy.

"Great Elixir Lead-Mercury Treatise" Modern Interpretation:

Section 8

The method for transforming lead and sulfur (known as "xin") into precious elixirs: Take one pound of pure lead and half a pound of silver, melting them together into liquid form. Add half a pound of sulfur, stir continuously for an extended period, then pour into a cauldron to cool. After breaking apart the mixture, separate the lead-silver compound, then grind the sulfur into powder and mix it with an equal amount of cinnabar. Place this mixture in the alchemical furnace for heating. The cinnabar forms a crucial medicinal foundation at the bottom layer—it must be refined until reduced to half its original weight to activate its potency, making it suitable as the outer layer of the elixir.

Section 9

The method for refining the Great Lead-Mercury Elixir: Select eight taels of high-quality lead ore resembling an old man's beard (called "old man's beard lead"), crush it and mix with eight taels of mercury. Process this in a sealed vessel for forty-nine days until it transforms into elixir powder. This powder can then be used to cultivate cinnabar, which in turn refines into the more advanced "Four Spirits Great Elixir."

Three Secret Alchemical Formulas:

First Formula: Combine sixteen taels of premium mountain-mineral substances with twelve taels of "Primordial Taiyi" material, adding half a pound of lead-yellow powder as the base. Process five taels of cinnabar in layered stages—wrapping the outer layer with one pound of mother-cinnabar, then reinforcing with lead-white frost. After seven days of sealed refinement, grind the result to create essential base material.

Second Formula: Extract half a pound of "yellow flower" material from mountain lead-silver. First wrap cinnabar layer by layer with one pound of mother-cinnabar for refinement. After removing the outer layers, combine the cinnabar with spiritual cinnabar, then wrap with yellow flower powder for further refinement to produce superior base material.

Third Formula: Take half a pound of yellow flower material and refine four taels of spiritual cinnabar in layered stages. After completion, mix with cinnabar for calcination, then wrap with mother-cinnabar and continue refining within the yellow flower base to form the complete elixir.

(Note: The term "fu" refers to a complete alchemical cycle; "kui" denotes a sealed container; "mother-cinnabar" indicates auxiliary materials; "yellow flower" represents specific refined products.)

The Great Elixir Lead-Mercury Treatise reveals the core secrets and concrete methods for refining the Golden Elixir (Jindan):

Core Alchemical Principles:

The "Three Secrets" refer to the crucial aspects of the Great Cavern True Formula (advanced alchemical art): first refining common lead into true lead, then using true lead to refine true mercury, and finally unifying lead and mercury to nurture the "infant" (symbolizing the spiritual nature of the Golden Elixir). This elixir embodies the supreme spirituality within the spiritual and the holiest within the sacred.

Though the "infant" and the "charming maiden" (symbolizing mercury) share the same origin, their forms differ. The maiden represents the unformed state, while the infant is the fully crystallized Golden Elixir. This elixir possesses miraculous transformative powers: in the heavens, it becomes white snow; in the mundane world, it takes the form of a lead vessel; and within the human body, it manifests as medicinal powder (dan medicine). Common mercury is merely the maiden—only the true essence of mercury extracted from cinnabar qualifies for alchemical use.

Refinement Methods:

1. Mix four taels of medicinal powder with one tael of silver dust, grind thoroughly, and place in an oil jar.

2. Cover with powdered medicine from the Three Caverns (Dongzhen/Dongxuan/Dongshen) and seal with yellow earth powder.

3. Heat with four taels of fire for five days and nights.

4. Remove the powder, grind again, and wrap in silver foil rolled into tubes.

5. Place in the Three Caverns' elixir base to incubate for twenty-one days.

Key Teachings:

1. This elixir is the medicine of immortality, a supreme treasure in the world.

2. Ordinary people, ignorant of the principles of cosmic creation, overestimate themselves by attempting to refine the Golden Elixir for selfish desires without proper transmission.

3. To learn the true formula, one must first seek an enlightened master, cultivate virtue (De), study the transformations of Yin-Yang, and master the properties of medicinal materials.

4. Alchemy must strictly follow the laws of heaven and earth, aligning with the principles of internal alchemy (Neidan).

5. This method must not be carelessly transmitted—revealing it to the unworthy brings misfortune upon seven generations of ancestors.

The treatise concludes by emphasizing the great utility of external alchemy (Waidan): it benefits others while nourishing one's own Dao cultivation.

I once heard a profound master explain: Heaven takes the essence of Earth, Earth takes the essence of humanity, and humanity takes the essence of all things—this is the principle of mutual appropriation among the Three Powers (Heaven, Earth, and Humanity). The core methodology of Waidan (external alchemy) originates precisely from this understanding.

In Waidan practice, lead serves as the foundation (ancestor), silver as the basis (mother), and mercury as the auxiliary (consort). Lead appropriates the primordial Qi of Heaven, silver appropriates the Qi of lead, and mercury appropriates the Qi of silver—this pattern of mutual appropriation follows the same universal principle. Waidan seeks to achieve the realm of perpetual regeneration through material transformation. Without comprehending this law of mutual devouring, appropriation, and fusion among the Three Powers, one cannot grasp the profound mystery of Waidan's mutual generation, nourishment, devouring, and unification.

The operational principles of Waidan perfectly mirror the natural creative processes of Heaven and Earth: lead represents the root, silver the foundation, and mercury the supplement. Using lead to resonate with silver constitutes obtaining primordial Qi; removing the lead and using only silver to cultivate mercury constitutes obtaining the Qi of the postnatal silver mother. When mercury transforms into the state of lead, it is called "true lead." Thus we understand that mercury's appropriation of silver's Qi resembles a child's dependence on its mother—this principle perfectly parallels Heaven appropriating from Earth and Earth appropriating from humanity.

What we call "true mercury" is essentially matter born from resonating with postnatal Qi in its unrefined, original state. Grinding true lead into fine powder, mixing it with true mercury, then adding cinnabar for cultivation—this process allows lead and mercury to fuse, Yin and Yang to pair, and through repeated refinement produces what is called the "medicine of lead-mercury's true death" (the successfully refined elixir). At this stage, mercury has transformed and the mother-substance's Qi naturally dissipates.

One must realize that in this process both form and Shen (spirit) reach a sublime state unified with the Dao. Only then can one understand that although Waidan involves human artifice, it shares the same origin as Heaven and Earth's creative work. Silver is mercury's mother-substance, just as form is Shen's dwelling. When Shen returns to form and they unite, lead merges with mercury, mercury transforms into lead, silver combines with lead, and child reunites with mother—this inseparable union is called the "harmonious convergence of the four phenomena" (the state of Yin-Yang unity), representing Waidan's supreme achievement.

Among the four phenomena and Five Phases (fundamental elements of creation), the earth phase is indispensable. This "earth" refers to sulfur, termed "Yellow Matron" (mediator) or "Yellow Sprout" (elixir's nascent form) in alchemical texts. The classics state one should use the Yellow Matron as mediator, and also speak of returning lead to be refined into Yellow Sprout. Water...

This passage elucidates the alchemical mysteries of lead-mercury transformation in Daoist Neidan (internal alchemy) practice:

Pure silver is termed "true mercury" (zhen gong). When combined with lead and calcined at high temperatures in an ash basin, it transforms into immaculate silver that can be further refined into gold. Using two taels of specially processed "dead lead" (si qian), one obtains "sacred silver" (sheng yin) of exceptional quality. The alchemical classic's phrase "reverting mercury into yellow thatch" describes the wondrous process of reconverting liquid mercury back to its true mercurial essence.

Daoist philosophy holds that following ordinary processes makes one mortal, while reverse cultivation leads to Dao attainment. Using silver to nurture cinnabar (mercury sulfide) depletes the silver, but with mercury's assistance, the silver's potency increases. Nurturing cinnabar with cinnabar causes dissipation, yet adding sulfur stabilizes mercury's Jing (essence), preventing dispersion. Through silver-mercury interaction, one achieves "returning to the origin and restoring the primal" (fan ben huan yuan). When combined with the "yellow matchmaker" (huang po, an alchemical intermediary substance), success is assured.

Lead and mercury embody solar-lunar essences whose Qi (vital energy) illuminates the earth, generating various metals, ores, and jewels. The so-called "elixir" (dan) forms when lead and mercury's true essences interact and transmute into the "returned elixir" (huan dan). Through prolonged refinement, this elixir develops radiance, subsequently producing gold, silver, and precious substances. Worldly alchemical methods like "Qi induction" (gan qi) and "mother-sand irrigation" (mu sha jiao lin) all originate from this elixir principle.

However, the text emphasizes that metal transmutation remains but a sideline for immortals. The true significance lies in ingesting elixirs to cultivate the internal body, elevating consciousness to the carefree realm of longevity. This constitutes the authentic pursuit for Dao practitioners.

(Note: Technical terms like "true mercury," "sacred silver," and "yellow matchmaker" are preserved with explanatory context. The alchemical process is clarified for modern comprehension while highlighting the progression from material alchemy to spiritual cultivation.)