《黃帝九鼎神丹經訣》Vol. 19

This scripture explains methods for removing toxicity from alchemical materials. Commonly used substances like copper, iron, and tutty (a type of brass ore) contain severe poisons that must be completely eliminated before the refined elixir can be safely ingested. The text details detoxification procedures for all three materials:

The method for detoxifying Danyang copper begins with purifying the material through a hundred cycles of processing with salt and glue as previously described. The purified copper is then ground into powder and subjected to sequential boiling: first with one dou (approx. 2 liters) of niter water, then one dou of green vitriol water, followed by one dou of Rong saltwater (a rock salt solution from northwest regions). Next, one dou of genuine ghee is boiled with ground pepper, after which ten catties (approx. 6 kg) of copper powder are wrapped in red millet and mixed with pepper powder, then steamed with sugarcane juice for three days and nights. This complete process renders ten catties of Danyang copper completely non-toxic for alchemical use.

Tutty ore undergoes nearly identical treatment: select high-quality Persian tutty with a horsetongue hue, process it a hundred times with salt and glue, then follow the exact same steaming procedures as with copper.

Iron detoxification proves more complex: after the standard hundred salt-glue purifications, ten catties of iron are completely powdered. First boil in vinegar for three days and nights, then in three dou of orpiment water, followed by one day and night in Rong saltwater. Separately, take one catty of iron, spread it evenly in a clean cauldron, cover tightly with salt powder, and heat intensely for one day. After cooling, collect the surface crystals. Finally, boil in magnetite water for one day and night to fully eliminate toxicity. The scripture specifically notes, according to the Thirty-Six Aqueous Methods Classic, that iron responds best to saltwater treatment while copper requires Rong saltwater.

An appendix details niter water preparation: pound and sieve niter, moisten with saltwater, seal in bamboo tubes, then bury four inches underground for five days until fully liquefied.

This scripture records the ancient methods for preparing various medicinal waters used in elixir preparation, primarily for processing metallic ingredients and assisting alchemical operations. Below are detailed step-by-step explanations:

Method for preparing green alum stone water: Select one jin of blue Wu alum (a mineral), first soak it in pure vinegar until moistened. Place it in a container with two liang of saltpeter, seal with lacquer, and bury three chi deep underground. After fifteen days, the medicinal water will be ready.

Procedure for making stone sulfur water: Take one jin of natural sulfur, one sheng of dew collected from mulberry leaves in the eighth lunar month, and two liang of saltpeter. Place these in a bamboo tube sealed with lacquer and immerse in the Hua Pool (a special alchemical water basin) for thirty days. The dew collection method is particularly meticulous: at dawn, have a careful youth wash their hands thoroughly and use clean silk to absorb the dewdrops from leaves.

Technique for preparing concentrated brine: Sift high-quality salt and mix with water to form a paste. Fill a bamboo tube, shave the surface thin, and seal with fine silk. Bury four chi and four cun underground for four days. The text specifies that these four types of medicinal waters are mainly used for refining yang copper (purified copper) and tutty (brass ore).

Two formulas for orpiment water: The basic version combines one jin of orpiment with four liang of saltpeter in a sealed bamboo tube, soaked in the Hua Pool for thirty days. The improved version adds two liang of alum stone and two liang of saltpeter, contained in a ceramic jar buried for twenty days, yielding a yellow, sweet-tasting product. The brine mentioned here is the same as the previously described concentrated brine, just named differently.

Special formula for magnetite water: Take one jin of magnetite, one liang of realgar, and one liang of chalcanthite (copper sulfate mineral). Crush and mix them in a sealed bamboo tube, then soak in the Hua Pool for thirty days. All steps requiring "lacquer sealing" must first be wrapped in ash cloth and dried in shade. These three waters are specifically for refining iron essence (iron compounds) and removing toxicity.

The concluding section emphasizes preparatory work before alchemy: All water and earth materials used for refining yellow and white substances (gold and silver) must undergo purification, especially metallic ingredients like copper and iron. The text notes that red copper and white copper mentioned herein are obtained through smelting rather than occurring naturally. When using elixirs to transform copper and tutty, the realgar toxicity must first be neutralized through the "subdued fire" method (low-temperature heating) until it changes color before further testing. For refining silver, one must first use non-toxic white wax (possibly referring to a metallic treatment agent) to whiten the copper material. The scripture concludes: No successful alchemical transformation can be achieved through a single procedure; only by following the complete technical process can one attain true divine medicine.

To refine elixirs (hedan) in the mountains, one must first select an appropriate location and then summon the mountain deity to seek permission. Only with the mountain god's approval can the alchemical process proceed smoothly and safely. The specific method is as follows:

First, observe ten days of purification (zhai). Write a one-foot-long alchemical scripture (danshu, containing essential elixir-refining instructions) on yellow silk and conceal it in mountain grasses or rock crevices. The Five Sacred Peaks' mountain deities (Yuejun) oversee elixir refinement—before beginning, one must use talismanic incantations (fuzhou) to inquire about the proper ritual procedures.

The elixir-refining method transmitted by Laozi requires writing a talisman (fuzhou) with cinnabar on an eight-inch white silk cloth, then placing it in a red brocade pouch worn over the heart. Those preparing to ingest the elixir must wear this talisman seven days in advance—this enables spiritual resonance and command over ghosts and deities. It is called the "Supreme One's Eight-Inch Plain Talisman" (Taiyi Ba Cun Su Fu). Both the refiner and the elixir-taker must wear it to open their spiritual awareness, maintaining purity without defilement.

The incantation from the Scripture of the Great Clarity's Divine Elixir Treasure (Taiqing Shendan Baojing) states:

"Condense the eight minerals (bashi), gather the radiance of sun, moon, and five stars (wuyao qiming).

Within the crucible (xuangong), stabilize and control, mastering the essence of fire regulation.

After nine cycles of refinement, the elixir ascends, soaring to the Great Clarity's immortal realm."

After reciting, place the talisman in a blue-green brocade pouch tied to the head—this prevents mineral essences from dispersing, allowing the elixir's qi to coalesce into radiant splendor.

The "Warding Harm Talisman" (Quehai Fu) must be written with cinnabar on white paper three inches wide and four inches long. Cast into the furnace to suppress malevolent forces. During focused visualization (cunxiang), divine light will descend, and celestial jade maidens will manifest—this signals the elixir's completion, impervious to ghosts and evil qi between heaven and earth.

Key elixir-refining principles note: refining the divine elixir requires transforming the essences of five metals through five minerals (wushi). One must petition the Heavenly Sovereign Daojun (a high Daoist deity) for the Five Spirit Talismans (Wu Shen Fu). With these talismans, minerals and metals can be refined and transformed at will.

The Green Emperor's Talisman (Qingdi Fu, corresponding to the Wood virtue of the East) is crafted on Jia-Yi days:

Lay a three-foot white cogon grass mat, spread a twelve-foot cyan silk cloth (qingbo), and arrange two cups of wine with two strips of dried meat.

Write the talisman in ink on a two-inch-wide, seven-inch-long paper, placing it on the altar with this invocation:

"On this auspicious day and hour, disciple [name] reverently receives the Green Emperor's Divine Talisman from the Supreme Daojun."

After kneeling in worship, burn the talisman and ingest its ashes. Note: the talisman's intricate patterns must be meticulously verified.

The Red Emperor's Talisman (Chidi Fu, corresponding to the Fire virtue of the South) is made on Bing-Ding days:

The same white grass mat is used, but with thirteen-foot crimson silk (jiangzeng) and cinnabar inscriptions.

The offering rites mirror the Green Emperor's, replacing "Green Emperor" with "Red Emperor" in the invocation.

This text records the ancient Daoist ritual method for crafting divine elixirs using the Five Emperor Talismans (Fulu). Each talisman corresponds to a different Celestial Emperor and requires specific materials arranged on an altar during designated days:

The Yellow Emperor Talisman must be prepared on Wuji days (Earth Phase days): A foundation of three-foot-long white cogongrass is laid, covered with twelve feet of yellow silk. Place two cups of wine and two strips of dried meat on the altar, with vermilion markings on the ground. The purple-inked talisman measures three inches wide and seven inches long, positioned on the ceremonial mat. The practitioner recites: "On this auspicious day and hour, your humble servant [name] reverently invites the Supreme Sovereign Dao Lord Yellow Emperor Talisman," followed by prostrations, burning the talisman, and consuming its ashes.

The White Emperor Talisman is prepared on Gengxin days (Metal Phase days): Similarly using white cogongrass as base, covered with thirteen feet of plain white silk. Arrange two cups of wine and two strips of dried meat, with green markings on the ground. The vermilion-inked talisman measures two inches wide and seven inches long. The invocation replaces "Yellow Emperor" with "White Emperor," maintaining the same ritual actions.

The Black Emperor Talisman is selected on Renkui days (Water Phase days): White cogongrass foundation with twelve feet of black silk, two cups of wine and two strips of dried meat, marked with black on the ground. The vermilion talisman shares dimensions with the White Emperor version, with appropriate substitution in the invocation.

The scripture notes: The Five Emperor Talismans actually comprise four talismans (possibly missing records for the other two), transmitted by Immortal Lord Ge Xuan (the renowned Three Kingdoms period Daoist). Each requires two copies—one for burning and ingestion, another to be worn atop the head. These talismans primarily serve preparatory functions before alchemical operations, to be completed ten days prior to furnace ignition.

Subsequent chapters mention numerous taboos surrounding the Nine Cauldrons Divine Elixir, violation of which causes failure. The true Golden Elixir (Jindan) coalesces the essence of metals and minerals—a treasure revered by cultivators. Its ingestion enables immortality, divine command, and celestial ascension. Yet worldly people often know only the names of alchemical classics without comprehending their true meaning.

The refinement of divine elixirs (advanced alchemical preparations in Waidan external alchemy) follows strict taboos and regulations. Violating these prohibitions will result in failure even with the correct formula. Specific restrictions include the Five Taboos, Three Prohibitions, Four Defeats, and Six Dreads. Any transgression causes the elixir's essence to dissipate, its spiritual potency to vanish, its divine radiance to disappear, and its medicinal efficacy to be nullified—rendering it completely ineffective when ingested.

The Five Taboos specify: First, never kindle the furnace on inauspicious days. The four "Death Days of the Five Minerals" (spring's Renchen day, summer's Guiwei day, autumn's Bingxu day, and winter's Dingchou day) suppress mineral essences, preventing medicinal properties from sublimating while generating toxicity. Second, avoid acquiring alchemical vessels, discussing formulas, or gathering herbs during "Five Evil Birth Days" (such as the inauspicious commencement of the Ninefold Purification fast in spring). Should this occur, purify the environment by casting five dou of clear wine into a nearby river. Without a river, dig a new well for wine immersion—all participants must drink this sanctified water.

Important clarification: Though altar rituals during elixir-making resemble deity worship, Yuanjun (high-ranking Daoist divinities) teach this isn't true spirit veneration. The core purpose is petitioning for alchemical success—persisting in rites after completion contradicts the art's essence. Authentic worship aims to summon the Great Unity (Taiyi, a supreme Daoist deity) or Jade Maidens (celestial attendants) through ceremony, harnessing divine power to enhance efficacy.

Operational requirements: Establish a furnace hut east of flowing water in remote mountains, preparing earthen crucibles and full equipment. Choose a "Removal-Opening Day" (Daoist auspicious date) to begin 100-day purification with no more than three sworn practitioners. Before refining, observe seven more days of fasting, then offer sacrifices beside the crucible at a jiazi day's auspicious hour. Offerings include: five sheng each of clear and white wine, three jin each of dried mutton and venison, two dou of yellow rice, two sheng of jujubes, twenty hard-boiled eggs, and three three-jin carp. Arrange three altars with three wine cups each. After burning guggul incense, perform rites with this invocation: "Disciple [name] reverently prepares the Yellow Emperor's Nine-Cauldron Divine Elixir according to ancient methods, imploring divine protection..." (invocation continues).

This scripture details the ritual procedures and ceremonial protocols for refining the "Nine-Cauldron Divine Elixir." The content can be divided into three main sections:

First are the preparatory rituals before alchemical practice. Four goddesses—Mysterious Maiden (Xuannü), Plain Maiden (Sunü), and Jade Maidens of Azure Loins (Qingyao Yünü)—must be invoked to assist. Ninefold prostrations are performed before deities like the Great Lord of the Dao (Dadaojun), accompanied by incantations petitioning for successful elixir refinement. Offerings include medicinal dates and tangerines, arranged on a newly crafted bed measuring three chi six cun (approx. 4 feet) draped with crimson silk, with the altar facing west.

Next comes the meticulous altar arrangement and sacrificial sequence. A nine-chi-square (approx. 10 ft) altar must be constructed from yellow earth, enclosed on four sides with railings and four gates. The alchemical furnace is placed six chi west of the altar. The altar itself is covered with white cogon grass mats, bearing offerings of dried meat, wine, yellow rice, and other ritual foods. Specific requirements include a three-jin (approx. 3.3 lbs) carp, twenty boiled eggs, and three sheng (approx. 2 liters) of jujubes. Continuous incense burning is mandated, with meat offerings renewed every three days and wine replaced thrice daily, maintaining three altars each with three wine cups and three jin of meat at all times.

Finally, the furnace-opening ceremony upon elixir completion requires additional offerings—pork, white rice, and roosters—accompanied by invocations declaring "the divine medicine is perfected." Notably, initial rites must honor the Yellow River's source (Heyuan) to stabilize terrestrial qi (earth energy), while obtaining the "Jade Credential of Nine Elders" (Jiulao Yuquan, a Daoist talismanic register) would perfect the process. The entire ritual emphasizes purity and solemnity, with uninterrupted incense day and night, reflecting Daoist alchemy's exacting standards for ceremonial precision.

This scripture discusses the taboos and ritual methods to be observed when refining the "Nine Cauldrons Divine Elixir." The main content is divided into two parts:

The first part explains the use of two types of talismans (Fulu)—the "Eightfold Pure True Talisman" and the "Nine Elders Jade Register"—to protect the alchemical process. The specific method is as follows: On the day the purification fast begins, write the talismans with cinnabar on blue-green silk, each measuring nine square inches, for a total of two talismans. Then, facing east, recite incantations, placing one talisman in a cyan brocade pouch to be worn on the chest. The other talisman is to be cut in half: one half is cast into water, while the other half is buried three inches beneath the alchemical furnace.

The second part details five major alchemical taboos:

1. When entering the mountains to gather herbs, avoid specific days (Spring: Ren-Yin; Summer: Gui-Si; Autumn: Ren-Shen; Winter: Gui-Hai). Otherwise, the deities will not grant their protection, and the elixir will be difficult to complete.

2. When refining the elixir in famous mountains, avoid the "Five Peaks' Days of Harm and Ruin" (Spring: Geng-Yin; Summer: Gui-Wei; Autumn: Bing-Shen; Winter: Ding-Chou), as these may cause physical harm or illness.

3. When constructing the furnace or sealing it with clay, avoid the "Days of Heaven Opening and Earth Breaking" (Spring: Bing-Xu and Bing-Chen; Summer: Xin-Wei and Xin-Chou; Autumn: Ren-Chen and Ren-Xu; Winter: Gui-Wei and Gui-Chou). Otherwise, the furnace may crack on its own, rendering the elixir ineffective.

4. Male alchemists must avoid the 3rd day of the 7th month and the Jia-Yin day of the 7th month, while female practitioners must avoid the 7th day of the 1st month and the Geng-Shen day of the 1st month. These are the "Days of Stone Essences' Conflict and Ghostly Convergence," unsuitable for alchemical work.

These taboos are all tied to specific combinations of celestial stems and earthly branches in the traditional calendar, reflecting the strict temporal requirements of Daoist alchemy. Only through talismanic protection and avoiding inauspicious days can the alchemical process succeed without interference from malevolent forces.

This passage explains the various taboos and precautions to observe when refining the "Nine Cauldrons Divine Elixir" (Jiuding Shendan). The guidelines are divided into five prohibitions, three taboos, four failures, and six fears.

The five prohibitions state that when essence (Jing) and Qi fail to manifest and the divine spirits do not respond, evil ghosts may intrude, causing the alchemical process to fail. The three taboos specify: first, avoid weeping or sorrow during the refinement; second, refrain from using medicinal ingredients with ominous names like "murder" or "thief" (for example, "stone onion seeds" are also called "mud-washed mixture," and such names must be used cautiously); third, avoid contact with death, childbirth, or other impure matters. Violating these taboos may render the elixir toxic or even lethal.

The four failures outline situations that lead to alchemical failure: frequent tremors at the refinement site; encountering envious individuals (who attract ghosts and demons); thunderstorms during refinement (requiring the cauldron to be covered with a damp cloth); and exposure to pungent substances like onions and garlic or burning feathers of chickens and dogs. These disrupt the condensation of the elixir's essence.

The six fears refer to six scenarios to avoid during refinement: wind, rain, thunder, and lightning when igniting the furnace; hearing soul-summoning calls (which scatter the spirit); encountering mournful weeping; and witnessing bloody or filthy events. These disturbances unsettle the elixir's refined essence.

Finally, the text mentions that the first elixir of the "Nine Cauldrons Elixir" is called "Elixir Radiance" (Danhua), also known as "Flowing Pearl Nine Transformations" (Liuzhu Jiuzhuan), the foundational elixir of the set. It emphasizes that alchemy is an extremely precise process requiring strict adherence to these prohibitions—failure to do so not only ruins the elixir but may also invite calamity.

This passage describes the specific method for refining the "Mysterious Yellow" elixir, a fundamental substance in Daoist alchemy. Mysterious Yellow is created by combining realgar and cinnabar minerals.

The process begins with preparing one jin each of realgar and cinnabar mixed with water. However, the original text doesn't specify the exact mixing ratio or viscosity, causing many practitioners to fail even with the oral instructions. Later discoveries in the Divine Talisman Methods revealed four techniques, with the second method mentioning that "nine-times refined Mysterious Yellow water" should be used to blend the mixture until it turns red. While steaming methods vary, the final product should achieve a mud-like consistency.

The detailed procedure involves: placing the realgar-cinnabar mixture into green bamboo tubes, thinning the outer bamboo layer, sealing with white wood stoppers, and covering with fine yellow sand. Steam the mixture a hundred times to circulate the liquid thoroughly. Then combine one jin each of realgar water and cinnabar water with the Mysterious Yellow, seal in a cauldron, and distill nine times to obtain purified Mysterious Yellow.

Next, divide one jin of Mysterious Yellow into nine portions. Prepare two earthen crucibles (ceramic vessels for alchemy) following the Great Clarity Elixir's White Snow Crucible Method. Pound twenty jin of oyster shells and seventy jin of red halloysite into powder, mix with vinegar to form a paste, pound repeatedly, then apply to coat the crucible interiors.

Finally, place two jin of mercury in the crucible, cover top and bottom with portions of Mysterious Yellow, and seal the joint between the two crucibles with the oyster-halloysite paste. After ten days of drying in shade, place the vessel on a nine-inch iron stand and burn continuously for three days and nights using horse dung or rice husk fire. After cooling for one day, open to collect the sublimated essence. If residue still emits vapor, repeat the distillation process as this indicates incomplete extraction of medicinal properties.

This scripture primarily describes the method for refining the "Nine-Cycle Divine Elixir" (Jiuzhuan Shendan), along with precautions and its miraculous effects after ingestion.

The alchemical process requires "Mysterious Yellow" (Xuanhuang, a mineral powder) and "Earth Dragon Paste" (Tulonggao, a liquid made from white-necked earthworms). The specific method involves dividing the Mysterious Yellow into two portions to cover both the top and bottom of the alchemical vessel, which is then sealed and heated. This process is repeated nine times. Next, seven white-necked earthworms are taken, salted to liquefy them, and the resulting liquid is mixed with the refined essence for further refinement over three days and nights. The final product is a five-colored crystal called "Flowing Pearl Nine Cycles."

However, the author expresses discomfort with this life-taking method of medicine preparation, believing that Dao cultivators should cherish all life. He proposes using "Mysterious Liquid" (Xuanye, a certain medicinal fluid) and "Western Dragon Paste" (Xilonggao, dew collected from mulberry leaves) as substitutes for earthworm juice, providing detailed preparation methods for these alternatives.

Regarding ingestion methods: On the morning of a Jiazi day (first day of the 60-day cycle), one should face the sun, kneel in reverence, and then consume the elixir. Ingesting a single grain-sized portion enables immediate ascension to the Nine Heavens as an immortal. Half a grain transforms one into an Earth Immortal (Dixian), granting supernatural abilities including immunity to fire and water, invulnerability to weapons, shape-shifting powers, and command over spirits and deities, with lifespan matching heaven and earth. Should one wish to leave the mundane world, celestial ascent is possible at any time.

The author particularly emphasizes that while ancient methods record using earthworm juice, alternatives like dew can actually be employed. This reflects the Daoist compassionate principle of "cherishing life and abhorring killing" (haosheng wusha), demonstrating the tradition's ethical dimension in alchemical practice.

This scripture describes the miraculous effects and preparation methods of consuming divine elixirs. An ordinary person who ingests a pill the size of a small bean can immediately ascend to heaven as an immortal, while consuming half that amount transforms one into an earthly immortal (dixian). Even animals undergo metamorphosis upon ingestion: birds become phoenixes, beasts turn into qilin, snakes transform into dragons, and spirits evolve into divine beings. Women who partake become jade maidens, while men achieve immortality.

When four pellet-sized pills are prepared by blending the elixir with snake oil and buried at the four corners of a dwelling, the entire house transforms into a crimson dragon that ascends seven thousand feet into the sky, materializing as a golden jade palace. Burying a single pill the size of an egg yolk causes everything within a thousand-mile radius—including rivers, mountains, and forests—to rise heavenward.

The preparation method involves pulverizing and sifting one jin of fine yellow earth, boiling it three times in hot water, then adding one zhu (an ancient weight measure) of elixir while stirring and simmering until the liquid evaporates—transforming the mixture into gold. The author acknowledges these methods may sound incredible, yet ancient sages made similar claims, such as the Eight Masters (Han dynasty fangshi) who told Prince Huainan that ordinary clay could be transmuted into gold and mercury into silver.

However, Prince Liu An of Huainan ultimately only obtained the Five Numinous Methods, never acquiring the secret transmission of the Nine Cauldrons Divine Elixir—demonstrating the genuine rarity of such Daoist arts. The scripture further mentions methods using red copper or black iron combined with elixirs, or melting one jin each of lead, tin, mercury, copper, and iron with one zhu of elixir—all resulting in gold. These were strictly forbidden from dissemination by Celestial Master Zhang Daoling, hence their details remain unrecorded in the scripture.

The second section explains the "Flower of Cinnabar" method: crafting an earthen crucible (danfu) for alchemical use, loading it with medicinal substances like the White Snow Elixir, sealing it, and heating over three iron cauldrons. This resembles the four preparation methods described in the scripture's second chapter on the "Divine Talisman Elixir." The primary method involves using the Flower of Cinnabar crucible to refine the "Two Divine Talismans" elixir—a divine substance requiring nine successive refinements without unsealing. The process entails filling the crucible with mercury, then sealing two earthen vessels with a mixture of oyster shell and red halloysite clay.

This scripture meticulously records the method for refining the "Divine Talisman Elixir" from the "Yellow Emperor's Nine-Cauldron Divine Elixirs." The process begins with preparing three iron cauldrons suspended nine inches above the ground, continuously heated with chaff fire for nine days and nights while constantly turning the alchemical vessels. During refinement, carp gallbladder must be added to maintain moisture, and the vessels must be sealed with specially prepared "Six-One Mud" (a sealing compound blended from seven ingredients).

The refinement occurs in nine stages (jiuzhuan, or "nine cycles"), with new earthen vessels required every three cycles. The text specifies preparing three sets totaling six vessels for alternating use. Mercury and lead oxide (huanghua) must be mixed in precise proportions during the process, controlled through fire modulation to produce "flowing pearls" (an intermediate product), ultimately dividing ten jin of material into nine portions for further refinement.

Notably, the Divine Talisman Elixir possesses the miraculous ability to transform mercury: merely heating one jin of mercury with one zhu (an ancient weight unit) of this elixir while stirring converts it into "returned elixir" (huandan). Its ingestion method matches that of the "Elixir Blossom" (danhua).

The scripture also documents an alternative method emphasizing an unconventional "mysterious yellow" (mercury-lead compound) formula—nine jin of mercury to one jin of lead. A concluding annotation by Celestial Master Zhang Daoling identifies "Elixir Blossom" as the first among the Nine-Cauldron Elixirs.

This passage comprehensively demonstrates ancient alchemy's intricate procedures—fire regulation, ingredient ratios, and vessel techniques—embodying Daoist Waidan (external alchemy) ideals of "transmutation for transcendence." Modern readers should note the toxicity of mercury and other heavy metals; these historical methods must never be attempted today.

This passage describes several methods for refining the Nine-Cauldron Divine Elixir. The first concerns the preparation of "Mystic Water Solution," a special medicinal liquid created by grinding and mixing materials such as magnetite, realgar, and chalcanthite essence, then sealing them in bamboo tubes to soak in the Hua Pool (a medicinal liquid basin for alchemy) for thirty days. If the materials prove difficult to dissolve, they may be buried three chi below well water for twenty days to form the solution. Different solutions have specific names: cinnabar solution is called "Crimson Dragon's Blood," azurite solution is "Azure Dragon's Blood," while magnetite solution is termed "Mystic Water Solution."

The third method involves the "Divine Talisman" refinement process. One must take Mystic Yellow powder from the Nine-Cycle Circulating Pearl Elixir and mix it with Hua Pool mud to coat the inner walls of an earthen crucible (a ceramic alchemical vessel). After drying, mercury is added—only mercury purified through nine detoxification cycles may be used, never ordinary mercury. The sealed crucible is then placed on a tripod iron cauldron and heated continuously for nine days and nights. Following a day of cooling, the crucible is opened, and the product is consumed using the same method as the Flower of Cinnabar Elixir.

The fourth method similarly requires Mystic Yellow extracted exclusively from the Nine-Cycle Circulating Pearl Elixir, with crucibles manufactured according to the precise standards of the "Great Clarity White Snow Earthen Crucible Formula."

Key instructions for refining the third elixir, "Divine Elixir": Grind and blend realgar and orpiment following classical methods. First, mix Mystic Yellow powder with vinegar to form a paste, applying it three fen thick on the crucible's inner walls. After ten days of shade-drying, add the realgar and orpiment. Seal the joint between two crucibles with Mystic Yellow paste, then completely coat the mouth and entire exterior with Six-One Mud (a sealing paste of six minerals), maintaining the same three-fen thickness. Once fully dried, place it on a tripod iron cauldron and refine using the aforementioned method.

The fourth elixir, "Returned Elixir," follows similar refinement principles, again emphasizing materials must undergo multiple purification cycles and vessels must strictly adhere to standardized craftsmanship. The entire process imposes extremely rigorous requirements regarding material purity, vessel sealing integrity, and precise fire control.

This text meticulously records the ancient methods for refining nine types of divine elixirs, belonging to the operational guidelines of Daoist Waidan (external alchemy) techniques—the practice of pursuing immortality through elixir preparation. Below are the step-by-step instructions:

First, mix nine minerals including alum and calcine them in charcoal fire. After grinding and sieving, place the mixture into an earthen crucible (a ceramic container for alchemy). Spread one jin (Chinese pound) of Xuanhuang (a mixture of realgar and orpiment) as the base layer, followed by one jin of mercury. Then grind one jin of realgar a thousand times and spread it over the mercury. Seven ingredients, each weighing one jin, are layered according to the method described in the scripture.

For the fifth elixir: Coat the inner walls of two earthen crucibles with Xuanhuang mud to a thickness of three fen (0.3 cm), let it dry, then add the medicinal materials. Seal the crucibles and place them on a tripod iron stand, elevated nine cun (approx. 9 inches), heating according to the scripture's instructions.

The sixth elixir requires mixing "earth dragon paste" (earthworm juice), earthworm feces, yellow dog gallbladder, oyster shells, and red halloysite into a mud to coat the crucible. Spread a half-cun layer of Xuanhuang at the bottom, add the medicinal materials, seal, and heat as above.

For the seventh elixir: After placing mercury in the crucible, coat the rims of two crucibles with Xuanhuang mud to ensure a tight seal. Then apply a three-fen layer of "Six-One mud" (a sealing paste made from seven ingredients) and place on the tripod stand, heating according to protocol.

The eighth elixir's preparation: Coat the crucible with Six-One mud, then spread one jin of Xuanhuang or lead white at the bottom. Cover the Xuanhuang with mercury. Separately grind and sieve one jin each of azurite and magnetite. First layer the azurite over the mercury, followed by the magnetite, and finally the Xuanhuang. The Xuanhuang must first be moistened to a semi-wet state with "dragon paste" (earthworm juice). Seal the crucible tightly and heat as prescribed. Afterwards, perform the "nine cycles" purification process—repeatedly moistening with dragon paste and sublimating nine times.

The ninth elixir's refinement: Following the scripture's method, first spread one jin of Xuanhuang at the crucible's base, then layer the medicinal materials in sequence, seal, and heat. The text mentions "Ziming" in reference to fire control techniques.

Finally, it explains that all Xuanhuang used in these divine elixirs is prepared using the "Flowing Pearl Nine-Cycles Xuanhuang Method." When opening the crucible, note that a tightly sealed vessel is called the "divine chamber," and the joint between two crucibles must be reinforced with special techniques.

These methods demonstrate the ancient alchemists' precise requirements for ingredient ratios, sealing techniques, and fire control, reflecting the Daoist pursuit of life transcendence through material transformation—a testament to their practical wisdom.

This passage details the specific methods for refining the "Nine Cauldrons Divine Elixir" and precautions for its ingestion, divided into three main parts:

The refining process requires specially crafted cauldrons (alchemical vessels). If the cauldron mouth is sealed too thickly with clay, one should not use a hammer to break it open. Instead, employ two or three sharp saws to alternately cut through the seal. Alternatively, a coarse whetstone can be shaped into a blade-like tool for gradual trimming until the cauldron's body is exposed. Then use iron tools to gently pry it open, leaving a gap between the upper and lower cauldrons to facilitate collection of the ascending elixir essence. For collection, use white rooster feathers (the "You fowl" refers to the zodiac sign of the rooster; Daoist tradition considers white plumage most efficacious). One must specially raise pure white roosters for two years beforehand, plucking three primary wing feathers from each (which must never be washed with water) to sweep up the elixir frost.

Regarding testing methods: The alchemical scriptures state that the elixir must first be tested in gold production - successful gold transmutation confirms the elixir's completion. The specific method involves boiling ten catties of lead in an iron vessel with intense fire three times, then stirring in one zhu (an ancient weight unit) of Nine-Cycle Elixir Essence, which quickly yields nine catties of gold. The same method using seven catties of tin produces silver. During testing, first measure the elixir essence quantity to ensure sufficient doses for multiple recipients. The remaining dense elixir residue can be used for silver production.

Precautions for ingestion: Effects vary according to individual capacity - superior practitioners (upper-grade adepts) achieve realization in seven days, middling practitioners attain immortality in seventy days, while ordinary people require a year. If taken sincerely in a single "knife-point" dose (a minuscule amount), the practitioner will enter a deathlike trance for half a day before awakening - this is the most dangerous method. Strict adherence to canonical measurements is essential, with doses no larger than half a millet grain. Store the elixir in golden tubes sealed with brocade pouches, typically worn at the elbow - this both honors its sacred value and prevents spontaneous spiritual transformation or disappearance.

The timing of taking medicinal substances is a matter of great precision. Medicine for treating illnesses should be taken before meals, while tonics for health cultivation should be taken after eating. This is because curative medicine needs to act quickly while the stomach is empty—if taken after meals, its efficacy would be diminished by the presence of food. Conversely, if health-nourishing medicine is taken before meals, its potency would be flushed away by food before taking effect, failing to nourish the body or achieve the desired results.

It particularly mentions that divine elixirs (Shen Dan), the advanced alchemical substances of Daoist practice, though immensely powerful, must be taken strictly according to the methods recorded in the classical texts and cannot be consumed casually like ordinary medicine. Each person's constitution and destiny follow corresponding Five Phase (Wood, Fire, Earth, Metal, Water) attributes—for example, those with an Earth-dominant fate should avoid green-colored medicines (green corresponds to Wood, which overcomes Earth). However, supreme elixirs like the Golden Elixir (Jin Dan) transcend the cycles of Five Phase interactions and are not bound by such conventional restrictions.

This passage comes from the twentieth scroll of the Huangdi Jiuding Shendan Jingjue (Yellow Emperor's Canon of the Nine-Cauldron Divine Elixirs), emphasizing the importance of proper timing and constitutional compatibility in taking medicine while noting that advanced elixirs can surpass the usual prohibitions governing ordinary remedies.