《黃帝九鼎神丹經訣》Vol. 12

According to Master Hu Gangzi, lead is the fundamental material in elixir refinement. If the quality of lead is impure, the elixir cannot be successfully produced. In the transformations of Yin-Yang, lead functions like tendons, channels, and marrow, serving as the crucial medium for coalescing the Seven Treasures (gold, silver, lapis lazuli, etc.). Those who understand how to utilize lead can accomplish all things, while those who don't will encounter obstacles everywhere. If the essence (Jing) of lead is exhausted, it's like the River Chariot (a Neidan term referring to the circulatory path of lead-mercury transformation) turning empty—all efforts will be in vain.

The operation of the River Chariot constitutes the core method of elixir refinement—none succeed without relying on lead. The so-called "repeatedly refined medicinal substance" precisely refers to this River Chariot operation. Elixir refinement must master eight methods of River Chariot circulation; otherwise, the elixir loses its foundation. When the Great Yin (lead) combines with the Great Yang (cinnabar), the resulting immortal elixir can confer transcendence when ingested. The essence of lead can be refined into "Flowing Pearls and White Snow" (two forms of the elixir), which are then combined with two types of water (likely referring to Yin-Yang Qi or specific medicinal liquids) and subjected to hundreds of steaming cycles. Dividing one jin of material into nine portions for repeated transformations ultimately produces the divine elixir.

This refinement method is profoundly subtle, requiring mercury to undergo nine ascents and descents (the Ninefold Reverted Elixir) before final transmutation into the elixir. Therefore, the sages guarded these methods strictly—they are not for ordinary Daoists to comprehend. The essence of lead has multiple secret names: Great Yin, Metal Lord, River Chariot, Riverbank Maiden (referring to lead's essence), Established Control Stone, etc. Ignorant alchemists mistakenly substitute ordinary mountain stones for lead, while true cultivators use Mysterious Yellow Blossom (lead's essence) transformed into Established Control Stone. Gallstone (a refining material) should properly be extracted from lead, yet fools use Qiangli gallstone—this is erroneous.

Regarding the relationship between lead and mercury: mercury (liquid metal) should never be used alone—it must always be paired with lead. Only through their mutual enhancement can the divine elixir be achieved. The thirty-six secret names for lead include: Mysterious Yellow Blossom, Yellow Lightness, Dragon Scales, Subdued Elixir, River Chariot, Elixir Liquid, Courier Elixir, Controlled Elixir, Refined Elixir, Yellow Sprout, Gallstone, Yin-Yang Parents, Flying Lightness, Yellow Essence, Yellow Dragon Talisman, Riverbank Maiden, Control Stone, Mercury, Yellow Blossom, Completion... (partial listing). These names all refer to different states and refinement stages of lead.

This scripture primarily expounds on the methods and applications of refining lead essence (铅精) in Daoist alchemy. The thirty-six types of elixirs mentioned (such as Purple Powder, Red Powder, Flowing Pearl, etc.) are all primarily concocted from refined lead essence. The most fundamental elixir among the Yellow Emperor's Nine Cauldron Divine Elixirs is called "Cinnabar Blossom" (丹华), also known as "Flowing Pearl" (流珠), which requires nine cycles of refinement to complete. Ordinary people, unaware of this principle, mistakenly use commercially purchased tin as a substitute for lead—like hurrying along the road as the sun is about to set—making it difficult to achieve their goal.

The Nine-Cycle Lead Elixir Method (九转铅丹法) recorded by Master Hugangzi (an ancient alchemist) details the refinement process: melt ten catties of lead in an iron cup to form a blue sand-like substance, then grind it with an iron hammer to extract a yellow liquid. This liquid is dried on new tiles into powder. The yellow powder is then mixed with Mystic Essence (玄精) juice to form egg-sized lumps, which are dried in shade before being melted in a furnace to extract lead essence. This process is repeated nine times to obtain qualified "Nine-Cycle Lead" (九转铅).

Another method, the "Nine Elixir Lead Mystic Pearl" (九丹铅玄珠), involves boiling three catties of Mystic Pearl (玄珠, an alchemical material) with twelve taels of Nine Elixir Lead Essence in the Yellow-White Left Brew (黄白左味, a special medicinal liquid) for seven days and nights until fully condensed and purified. It is then dried to remove toxicity. The resulting lead can be used to craft the "River Chariot" (河车, an alchemical term referring to cyclically sublimated elixirs), with lead from the first to the ninth cycle all being usable. This type of lead can synergize with various elixirs and even facilitate mutual transformation between copper and iron. Seventy-two crucial elixirs all require this refined lead.

The scripture emphasizes that although these contents are already recorded in the Mystic Pearl (玄珠) scroll, the methods of using lead merit reiteration. Qualified alchemical lead must undergo the complete process of boiling in the Yellow-White Left Brew, condensation, and drying. Ordinary people, unaware of this principle, cannot succeed by casually using common lead.

This passage reveals the secret methods and precautions for refining "danqian" (a special lead preparation used in alchemy). It first explains that authentic danqian must undergo nine cycles of refinement before use. This nine-times refined lead can be employed to craft the "River Chariot" (a key alchemical apparatus) and various elixirs, being essential for making all seventy-two types of sacred alchemical vessels. When using a mixture of lead oxide and carbonate to coat the "Six-One Mud" (a sealing compound for alchemical processes), only nine-refined danqian can produce the crucial "Mysterious Yellow" preparation. The text emphasizes that the "Yellow and White Art" of transmuting copper and iron into gold and silver likewise requires this nine-refined lead to be effective.

The scripture then introduces three specialized types of danqian: those seeking immortality and ascension must use "Male Lead"; those wishing to summon spirits or liquefy lead require "Female Lead"; while practitioners aiming to transmute the "Five Metals" (various base metals) need "Spirit-Flying Lead." Ordinary practitioners often fail to distinguish these varieties, blaming faulty recipes when their alchemy fails. These methods remain profoundly esoteric—unless one has studied the secret manual Five Powder Diagrams, the mysteries remain inaccessible, which is why true adepts guard them so closely.

The text particularly stresses that each type of lead requires three refinement cycles to become effective. After nine cycles, the lead transforms into divine medicine capable of activating other ingredients. It concludes by correcting a common misconception: ordinary people frequently mistake tin for lead, which is entirely erroneous. These methods are recorded in "Mercury Formulae," demonstrating how lead and mercury must always be carefully paired in alchemical operations to ensure flawless results.

This scripture describes several methods for extracting "lead" (a specialized alchemical term referring to processed metallic compounds) in ancient Daoist alchemy.

The first method is called "Extracting Male and Female Lead": Take one hundred jin of true cinnabar (an alchemical ingredient) and ten jin of bluish-white actinolite (a mineral medicine). Crush and sift the actinolite, then mix it with Mystic Essence liquid (explained later as ox dung juice) to form pellets. After sun-drying, heat them in an iron cauldron until completely molten. Pour the mixture onto warm ashes to cool, then break it apart to select the finest portions as "Elixir Coating" (an alchemical term referring to the mysterious yellow-black substance used for making divine elixirs).

The second method, "Extracting Female Lead," uses one hundred jin of true cinnabar, fifteen jin of true powder, one jin of Wuqing alum, and one jin of lime. Each ingredient is separately crushed, sifted, then combined and mixed with Mystic Essence liquid to form pellets. These are shade-dried and processed using the same extraction method as above.

The third method, "Extracting Divine Flying Lead," is more complex: Use one hundred jin of true cinnabar combined with five medicinal substances—Wuhuang alum, red rock salt, turmeric root, and yellow sal ammoniac. Each is crushed and sifted separately, then blended with wine, taking care to prevent clumping. After sun-drying, the mixture is crushed and sifted again before being combined with Mystic Essence liquid to form pellets for shade-drying. The text provides special explanations for several terms: "red rock salt" refers to what the sages called "the unknowable," "Mystic Essence liquid" means ox dung juice, "yellow mountain fat" indicates Wu alum, and "gold thief" refers to sulfur.

Finally, detailed instructions are given for proportions and procedures: Add yellow alum, red salt, turmeric root, sulfur, and yellow cinnabar in sequence, blending with wine. For every fifty jin of yellow cinnabar, use five large sheng of clear wine. The mixture should be sun-dried for one day on reed frames lined with thick paper, then mixed with ox dung juice to form pellets and shade-dried for ten days. An alternative method involves precisely measuring all materials, then layering them alternately with yellow cinnabar using a coarse sieve before final blending with wine.

These methods reflect the strict requirements of ancient alchemy regarding medicinal ratios and preparation processes. Special materials like ox dung juice served as mediums, with repeated crushing, sifting, blending, and drying procedures employed to produce alchemical ingredients.

This passage details the concrete operational methods of ancient elixir preparation, divided primarily into three stages:

The first step involves creating the elixir base material: Collect ox dung during the twelfth lunar month, soak it in warm water, and knead it into balls roughly the size of egg yolks (larger pieces would dry too slowly). After shaping, let them dry in shade for fourteen days before placing them in an iron cauldron. The cauldron specifications are strictly defined - the base should be 4 to 6.5 fen thick (about 1.3-2.2 cm), 7 cun long (about 23 cm), with a 3.5 cun (11.5 cm) heating zone. When completely liquefied, pour the mixture onto a flat surface layered with fine white ash (3-4 fen thick), surrounded by dry clay barriers to prevent leakage. After cooling, the usable portions are selected by hammering. The mentioned "Mysterious Essence Liquid" (xuanjing zhi) refers to a special alchemical ingredient in Daoist Waidan (external alchemy) practice.

The second stage describes lead purification: Stir-fry the obtained lead in a specialized iron vessel measuring 3 chi 5 cun long (about 115 cm), 1 chi deep (33 cm), with a 1 cun thick base (3.3 cm), shaped like a trough. Continuous stirring with a long iron rake from dawn till dusk reduces it to fine powder. Precise heat control is crucial - excessive fire causes over-melting while insufficient heat prevents proper sand formation. The resulting lead sand is then stirred in clean water until fully dissolved.

The final elixir preparation involves pouring the settled yellow liquid into an urn, perforating its belly to drain water. After drying the sediment, spread it on tile slabs lined with double-layered paper for sun exposure. When the hardened elixir cracks, pulverize and sieve it before returning to the iron vessel for three days and nights of stir-frying until achieving a red hue. The text particularly emphasizes avoiding intense flames, maintaining consistent moderate heat instead.

Throughout the process, the repeated emphasis on shift rotations and uninterrupted operation highlights the extraordinary patience and teamwork required in alchemical work. These methods demonstrate ancient alchemy's rigorous standards for equipment specifications, operational sequences, and the alchemists' meticulous control over firing techniques.

This passage describes the ancient Daoist method for refining the "Ninefold Cyclically Transformed Elixir" (Jiuzhuan Dan), belonging to the practice of Waidan (external alchemy) which involves mineral-based elixir preparation. It details the multi-stage process using materials like lead and ox-dung juice.

First Transformation:

Mix 500 jin of lead powder (hufen) with 20 jin of rock salt (shiyan), then add one dan of water and one dan of ox-dung juice. Knead into egg-sized pellets, dry in shade, and smelt in a furnace. This quickly yields refined lead called "powdered lead" (fenqian), known as "Earth's Essence." Then take 5 jin of yellow lead oxide (huangdan), combine with ox-dung juice to form pellets, and smelt similarly to obtain "elixir lead" (danqian), termed "Heaven's Essence."

Second Transformation:

Stir-fry the combined "Essences of Heaven and Earth" until they turn bluish-sand-like. Grind with 30 jin of pure rock salt and 8 dou of saltwater in a basin until achieving a yellow sandy texture. After pounding, smelt in a sealed vessel for three days and nights until it transforms into red sand matching the color of high-quality cinnabar.

Third Transformation:

Take the previously refined elixir, mix with one dou of newborn male infant's milk (substitutable with yellow cow's milk if unavailable), one dan of ox-dung juice, and 8 dou of saltwater prepared with 30 jin of pure rock salt. Form egg-sized pellets, dry in shade, and smelt.

Key technical notes:

• Use polished copper basins only; avoid earthenware or open vessels to prevent medicinal evaporation
• Ox-dung juice should have porridge-like consistency
• White sal ammoniac (naosha) may be dissolved in wine and mixed with dung juice
• Omit sal ammoniac if the elixir becomes overly hard
• Authentic Ninefold Elixir appears bluish-black, pliable, and possesses miraculous efficacy

These methods reflect ancient Daoists' pursuit of immortality through repeated mineral smelting, where "ninefold" denotes nine cyclical refinement processes. Modern readers should note that such elixirs often contained toxic heavy metals—historical records document numerous poisoning cases from ingesting them, making these practices absolutely inadvisable to replicate today.

This passage meticulously records the specific procedures for refining the Ninefold Cyclically Transformed Divine Elixir. From the fourth to the ninth transformation, each stage requires distinct material ratios and refining methods.

The fourth transformation involves mixing the Heaven-Earth Essence Elixir (produced from the first three transformations) with twenty jin of high-quality cinnabar. This mixture is boiled in wine for twenty-one days, then pounded and blended with "earth-strength juice" (ox dung liquid) to form egg-sized pellets. After drying in shade, these are calcined in a furnace using the same method as the Ninefold Elixir but with different medicinal ingredients.

For the fifth transformation, five jin of realgar with rooster-comb-red coloration is boiled in pure ox butter for seven days and sun-dried. Combined with other ingredients, it's mixed with one dan of wine and one dan of ox dung liquid to form pellets, which are shade-dried and calcined as before.

The sixth transformation requires twenty jin of orpiment and five jin of Wuhuang alum stone, boiled for three days and nights in ox milk and hemp seed juice. After shade-drying, pounding, and sifting, the mixture is combined with ox dung liquid to form pellets for drying and calcination.

The seventh transformation needs five jin of azurite ore, one hundred fresh cyperus rhizomes, and typhonium rhizomes, following the same subsequent procedures.

The eighth transformation uses three jin each of rock salt, crude mirabilite, and refined mirabilite. After pounding and sifting, these are blended with ox dung liquid to form pellets for drying and calcination.

The ninth transformation is most complex. The elixir from the previous eight stages must be placed in specific directional positions while establishing an altar for purification rituals. Lingbao Five Talismans (Daoist Fulu) and Twelve Divine Seal Talismans are arranged. Five jin of white jade powder and one jin of gold flakes are mixed with green goat heart and liver to create a paste for coating the furnace. At an auspicious "Heaven's Heart" moment within the Nine Palaces arrangement, refining continues for three days and nights. Upon completion, the elixir is blended with white honey. Consuming two millet-sized pellets daily purportedly enables one to become a zhenren (Perfected Being). The text notably mentions that while this formula is detailed, the crucial method of using lead becomes concealed at the ninth transformation stage.

These procedures exemplify Daoist alchemy's rigorous requirements regarding material proportions, temporal selection, and ritual protocols, reflecting ancient practitioners' exploratory pursuit of immortality through material transformation.

This passage describes the crucial final steps in refining the Nine-Cycle Divine Elixir. Five precious materials are required: first, five catties of white jade must be ground into powder, followed by one catty of gold crushed into fine particles. These two treasures are blended into a clay-like mixture used to coat the inner walls of the alchemical furnace.

The most difficult materials to obtain are the heart and liver of a qingyang (a mythical spirit animal) and ten liters of firstborn male infant's breast milk. However, the scripture clarifies that when these prove truly unobtainable, one may substitute other available medicinal ingredients to complete the Nine-Cycle refinement process. The mentioned "danqian" (lead-mercury compounds used in alchemy) can replace these rare materials while still achieving the same level of crucible refinement—the Nine Cauldrons representing the highest grade of alchemical vessels.

The text particularly emphasizes that simpler formulas often yield more exquisite effects and greater spiritual power. Specific elixir efficacies aren't detailed here because truly profound alchemical practice (Neidan) doesn't require exhaustive documentation—the essence lies in mastering core principles.