《龍虎還丹訣》

"Instructions on the Dragon-Tiger Reverted Elixir" Explained in Plain Terms:

This alchemical scripture by Master Li primarily elucidates the core principles of elixir refinement. It begins with a poem in the "Wang Jiangnan" meter, clarifying that Dao beginners must first recognize "true lead" (the fundamental substance in alchemy), extract from it the pure "gold within lead," and use this to cultivate the Dantian (the body's energy center) before comprehending profound mysteries.

The "true lead" mentioned here refers to cinnabar contained within lead—the essential substance of alchemy. This cinnabar emerges from emptiness and returns to emptiness, embodying the harmonious Qi of heaven and earth. It has many alternate names: the River Chariot (an alchemical term for energy pathways), refined autumn stone, golden flower, middle male, and white dragon's tooth. Cinnabar symbolizes the primordial chaos of the universe's inception—the undivided state of Qi in the "Great Origin" (Taiji, the Supreme Ultimate in Daoist cosmology).

The cultivation principle is this: Primordial Qi (One) gives birth to Yin-Yang (Two), with Yin energy called "white gold"; from Yin-Yang (Two) emerges Three (cinnabar), which belongs to the Wood phase, representing energetic rather than material substances like gold or silver. If practitioners can focus on refining this cinnabar in the alchemical furnace, eight or nine out of ten will succeed. Mistaking ordinary cinnabar for the true substance will only waste effort.

The scripture emphasizes: True alchemy depends on extracting the Five Phases' essence from black lead. The key is "Metal Lord" (a coded term for lead), with methods detailed in the "Zhouyi Cantongqi." Yang hides within Yin, rooted in the northern direction (the trigram Kan). Black lead becomes medicine when smelted—no need to seek elsewhere. This elusive state arises from the Five Phases' empty nature.

The so-called "yellow sprout" (the initial form of the elixir) emerges from the River Chariot's movement. The chariot represents the wondrous transformations of the "Great Simplicity" (a cosmic evolutionary stage)—seemingly substantial yet insubstantial. The text states: If you call the yellow sprout lead, it remains when lead is removed; if not, it still originates from lead. Practitioners must distinguish true lead from ordinary lead or tin, never abandoning it to seek "truth."

The final revelation: The mystery lies close at hand. The misty Qi of heaven and earth's Yin-Yang manifests as Kan-Li (water-fire) imagery within the Five Phases, rooted in Qian-Kun (heaven-earth). Sages discern tangible forms by observing Yin-Yang and the Five Phases' patterns. True lead is easily found—it's seen daily in your own home, yet overlooked. This speaks of the harmonious Qi of Yin-Yang and the Five Phases within the great Dao.

This scripture elucidates the core concepts and common misconceptions in Daoist alchemical practice.

The opening passage reveals that the true mysteries of the alchemical path (Dao) transcend ordinary comprehension. The essence of elixir refinement lies in the harmonious interaction of "gold and water" (symbolizing lead and mercury, representing the two energies of Yin and Yang), requiring the practitioner to locate the "jade pool" (the essential crucible of transformation). However, many contemporary practitioners mistakenly regard mixtures of silver powder, cinnabar, and crude lead as treasures—a practice that violates the natural order and disrupts the harmony of the "Three Powers" (Heaven, Earth, and Humanity).

The text emphasizes that lead and mercury (gold and water) constitute the foundation of alchemy, also known as the Azure Dragon and White Tiger, or Kan and Li (symbols of Yin and Yang). Authentic elixir refinement requires the purest "true water and true fire" (the quintessential energies of Yin and Yang), not haphazard concoctions with impure substances. The scripture explicitly states that white represents the golden essence (Yang) while black signifies the aqueous foundation (Yin)—this constitutes the profound secret of alchemical transformation.

The latter section critiques prevalent errors among practitioners: failing to recognize true lead (the White Tiger) and true mercury (the Flowing Pearl), they instead employ filthy materials in their furnaces, vainly hoping to obtain the Golden Elixir. Genuine alchemy demands immaculate conditions, far removed from worldly temptations, strictly following celestial patterns: establishing an alchemical altar, forging the cauldron, gathering solar and lunar essences, and harmonizing the Qi of the Five Phases. Without rigorous purification in practice, the pursuit of longevity becomes fundamentally impossible.

The text repeatedly stresses that elixir refinement must conform to the natural Dao while maintaining physical and spiritual purity—otherwise, even ten thousand eons of effort would prove futile.

This passage elucidates the profound principles of Daoist alchemy (Neidan). The essential meaning can be understood as follows:

The mysteries of the Golden Elixir (Jindan) path are rarely comprehended in this world. One should never casually use black lead (a common alchemical material) to recklessly alter natural creation. The secret techniques of Prince Huainan (a famous Han dynasty alchemist) all reside in the "Flower Pond" (Huachi, referring to the special reactive environment within the alchemical furnace), but how could such celestial secrets be lightly revealed?

Ancient alchemical scriptures state: Through the transformation of Yin-Yang (changing south to north) and the mutual generation and restriction of the Five Phases (mother-child cycles), the aqueous essence of the north is transformed into the metallic essence of the west, much like the harmonious cooperation between husband and wife. This reveals the true principle of metal and wood's mutual restraint.

Lead belongs to the Water phase (Ren-Gui of the north), yet contains white substance (white metal), corresponding to the Dui trigram of the west, symbolizing the White Tiger (western celestial animal) that governs the Qi of execution. Prince Huainan's "Autumn Stone" elixir was named for its white color. The sages' alchemical secrets remain within the Flower Pond, never fully recorded in scriptures for fear of disclosing celestial mysteries.

The scripture emphasizes: Better to extract true gold from lead (symbolizing the elixir's essence) than to pursue what the mundane world considers treasures. True treasures are not ordinary worldly objects. Sadly, many scholars lack profound understanding and fail to grasp the scripture's deeper meaning.

The Yin Fu Jing states: Though there are hundreds of alchemical methods, the key lies in the "Divine Water Flower Pond." The Flower Pond's mysteries are rare in this world and cannot be casually transmitted to ordinary people. Alchemy cannot be achieved by randomly using the eight minerals (basic alchemical ingredients).

Only when heaven and earth's Yin-Yang interact, when solar and lunar essences unite, can the supreme treasure be formed. The ancient immortal Xu Congshi (a Daoist figure) observed celestial phenomena, comprehended the mysteries, and gathered Yin-Yang essences to refine elixirs. Some mistakenly believe common crystals or sunlight/moonlight can produce true water and fire—this is erroneous.

The scripture concludes: The genuine elixir requires the steaming essence of solar Qi, gathered at specific moments as "true essential Qi." How could ordinary substances achieve this? Can mundane mercury grant immortality? Cinnabar (Zhusha), being the essence of sun and moon containing the wonders of the Five Phases, represents the supreme treasure of heaven and earth.

(Note: The text contains numerous Neidan terms that actually refer to energy transformations and mind-body states in cultivation practice, not literal chemical operations.)

This scripture primarily expounds on the "lead-mercury" theory in Daoist alchemy (Neidan), along with the cultivation principles of yin-yang union and the meeting of dragon and tiger:

Regarding alchemical materials:

The text clarifies that authentic alchemical ingredients are not ordinary black lead or liquid mercury (common misconceptions during that era). It emphasizes that "true lead" symbolizes the Black Tortoise of the North (water deity) and the White Tiger of the West (metal deity). The scripture criticizes contemporary practices of substituting precious materials with inferior substances like net-foot lead, yellow lead oxide, or litharge.

Yin-yang cultivation principles:

Using celestial imagery, the sun's golden crow represents yin essence while the moon's jade rabbit embodies yang essence. It proposes the method of "refining yang within yin" as the genuine path to achieving immortality. The text describes the union of metal (represented by the number four) and water (represented by one) through animal symbolism that illustrates cycles of mutual generation and restraint.

Alchemical process:

The text references the Fu hexagram from the Yijing (Book of Changes) and water clocks (ancient timing devices) for precise fire regulation. The merging of lead and mercury serves as a metaphor for sexual union, symbolizing the harmonious interaction of yin and yang. It stresses that without comprehending the "principle of true unity" (fundamental Daoist theory), success remains perpetually unattainable.

Key concepts:

• Yellow Sprout: The precious substance produced during the alchemical process
• River Chariot: The pathways of vital energy (Qi) circulation within the body
• Dragon-Tiger: Symbolizing lead (tiger) and mercury (dragon) respectively, representing the two primordial energies

Cultivation effects:

The scripture cites the immortal Qingtong Jun stating that understanding these principles enables one to transform heaven-earth and command spirits. Successful practitioners may witness the "radiance of five spirits" (five mystical lights). It emphasizes the necessity of authentic oral transmission, warning that misinterpretations inevitably arise without proper guidance.

Through rich symbolism and metaphorical language, this scripture systematically presents foundational Neidan principles. It underscores the importance of discerning genuine materials and mastering yin-yang harmonization as essential requirements for attaining the highest realms of cultivation.

"The Dragon-Tiger Elixir Formula" Explained in Plain Terms:

The mutual generation and restraint of the Five Phases (Wood, Fire, Earth, Metal, Water) follow the natural order of heaven and earth—how could ordinary people easily comprehend this profound principle?

On the fundamental theory of the Elixir:

The key to refining the Elixir lies in the fusion of Metal (representing the lungs) and Fire (representing the heart). Only when Metal Qi is abundant can one achieve longevity, just as the harmonious union of husband and wife embodies the balance of Yin-Yang. When their affection runs deep, they retreat together to the immortal's grotto-heaven, awaiting the propitious celestial timing for their work to reach completion.

On the formation of the Elixir:

Like branches growing lush from fire, when the foliage becomes abundant, the Fire Qi in the Li Palace (heart) gradually brightens. Yet excessive Fire will ultimately extinguish itself, transforming into Earth (spleen) to produce the essence of Metal (lungs). As Earth Qi declines, Metal Qi flourishes, eventually returning to its northern position where Kidney Water resides.

The mystery of Dragon-Tiger (heart-kidney) interaction:

When the northern Black Tortoise (kidney water) meets the southern Vermilion Bird (heart fire), the Vermilion Bird transforms into a dragon, nourishing the "Great Insect" (original spirit) in the Dantian. The original spirit consumes vital essence, while the True Dragon (yang energy) refines the "gold and jade" (essential energies). These two engage in battle within primordial chaos until blood and essence fully merge.

The application of Lead and Mercury (essence, qi, and spirit):

Cinnabar (heart-mind) must manifest externally, while Lead (kidney essence) requires sedimentation. Though heart-mind and kidney essence appear contradictory, they must follow the principles of Heaven, Earth, and Humanity. Mercury (original spirit) is gathered from the solar essence, while true gold (original essence) must be further refined from Lead.

Key points of water-fire balance:

One must thoroughly understand the principle of water and fire interpenetration. Fire must be sought within water, while water must flow from fire. When water's current is restrained by fire, the power of the Central Male (yang energy of the Kan trigram) is needed. When water is pressured by fire, the two ultimately achieve harmony within the alchemical chamber.

Constructing the alchemical furnace:

With the Earth phases Wu-Ji (spleen-stomach) forming the city walls, this fortress requires impregnable defenses, for here the "Medicine King" (true Qi) governs. Subordinate thoughts find no room for reckless movement, while external Kan-Li (water-fire) is completely isolated—thus the true form of the furnace naturally manifests.

Mastering fire phases:

Beginning from the Fu hexagram (initial yang birth) through the Bo hexagram (yang's near exhaustion), the Tun and Meng hexagrams (yin-yang commencement) are employed morning and evening, secretly aligning with creation's rhythms. Spring and summer symbolize advancing fire, autumn and winter signify withdrawing the tally. Should one mistakenly enter the Kun Palace (pure yin), the Elixir's path is irrevocably lost.

Transmission of secrets:

Authentic transmission requires the master's oral instruction—without grasping the true meaning, reckless practice invites peril. Dead literalism misses the essence, for the true meaning hides between the lines. Even with textual understanding, one must weigh the proper timing to achieve success.

Precepts for cultivation:

The master warned to keep distance from power and wealth—riches tempt fatal consequences. Never flaunt material possessions, for prosperity proves fleeting. Reclusive practice brings carefree joy, where one becomes companion to heaven and earth.

The ultimate efficacy of the Elixir:

Immortals unanimously call it the longevity medicine. Upon ingestion, one... (original text breaks off, presumably describing the attainment of transcendent states)

The Dragon-Tiger Reverted Elixir Formula in Modern Interpretation:

The secret to longevity lies in understanding this fundamental truth—the true spiritual medicine actually resides where yin and yang intersect within the human body (Kan-Li refers to the kidney-heart, water-fire, and other yin-yang concepts). Those who comprehend its profound mystery may achieve a lifespan synchronized with heaven and earth.

[Analysis of Seven Returns]

The Book of Changes states "return comes in seven days," describing the cyclical pattern of yin and yang. Just as the earthly branch hours progress from Yin (3-5am) to Shen (3-5pm) and back to Yin again, this demonstrates the principle of sevenfold return. The mutual generation and restraint of the Five Phases (Wood, Fire, Earth, Metal, Water) follows this pattern: Metal generates Earth, Earth generates Fire, Fire generates Wood, Wood generates Water, Water regenerates Metal, until Metal finally returns to Earth—another manifestation of sevenfold return. When Metal and Earth meet twice, they form the image of the alchemical cauldron (referring to the internal space for elixir refinement within the body).

[True Meaning of Reverted Elixir]

The pure yang energy (true yang) between heaven and earth should radiate brilliantly—so why can ordinary people not perceive it? Because humans fail to preserve their innate spiritual root (primordial qi foundation), causing the true yang energy to dissipate externally. By mastering the sevenfold return method, one can recall these energies back into the body to refine them into the elixir (reverted elixir). The reverted elixir represents the collective name for all spiritual medicines—what we call the Golden Elixir.

[Elixir Refinement in the Human Body]

The principle of sevenfold return and reverted elixir allows heaven and earth to create all things through its operation. Among all creatures, only humans receive the most refined qi of heaven and earth, containing within them the foundation of spiritual energy—this forms the basis for the reverted elixir. The phrase "within humans" means the fundamental source of elixir refinement lies inside the human body.

[Essential Practice Points]

1. First cultivate oneself while awaiting the proper timing: Since the foundation of the reverted elixir exists within the human body, one must first comprehend this principle before practicing. Elixir refinement requires waiting for the appropriate celestial hour (referring to specific moments of yin-yang transformation)—missing this critical timing means failing to seize heaven and earth's mysterious creative mechanism.

2. The moment of first yang stirring: Among the twelve two-hour periods of the day, the Hai hour (9-11pm) contains the most concentrated yin energy. When yin reaches its zenith (Zi hour, 11pm-1am), yang energy begins to sprout, forming the Fu hexagram (symbol in the Book of Changes). This represents the "hidden dragon do not act" state (indicating the need for careful nurturing of newly born yang energy).

3. Meditative visions: Practitioners describe "a single luminous entity concealing five colors," portraying the stirring state of internal primordial qi. At midnight (zhongxiao), one may perceive time's passage through the water clock (ancient timekeeping device). After the first yang energy (born during Zi hour) emerges, by the Chou hour (1-3am), the lead cauldron (referring to the dantian) emits a warm glow that may even shine through curtains (describing the luminous visions seen during inner observation).

The Dragon-Tiger Golden Elixir Formula elucidates the principle of Yin-Yang energy interaction during alchemical practice:

As Yang energy gradually intensifies (symbolized by the Lin hexagram), the alchemical cauldron (lead crucible) naturally increases in temperature, much like water warming in a heated pot. At this stage, Yin and Yang harmonize, the medicinal substances gradually coalesce, and through sustained fire regulation, the Great Dao of the Golden Elixir (Jindan) can be perfected. The text specifically mentions "lead" without referencing "mercury" because before the division of heaven and earth, there existed only primordial Qi (this pre-celestial Qi is represented by lead) - the differentiation into Yin and Yang energies occurred only after the creation of the cosmos. Adepts teach that the union of Yin and Yang constitutes the foundation of cultivation; lead and mercury symbolize these complementary forces, with emphasis on lead as it represents the origin of all things and the ancestor of medicinal substances.

When the crucible reaches optimal warmth, true Qi (Zhenqi) circulates through the limbs and five viscera, radiating brilliance through the skin and permeating the entire body. The Book of Changes hexagram "Dragon appearing in the field" precisely describes this initial manifestation of Yang energy.

The concept of "contending transformations" describes the dynamic struggle between Yin and Yang: with Yin above and Yang below, Yin restrains Yang while Yang dissolves Yin. Though Yin occupies the superior position, the decisive moment has not yet arrived, hence the two energies remain in dynamic tension. Without their eventual union, the transformative achievement cannot be realized. During the Yin hour (3-5 AM), the triple Yang emerges, entering the state of the Tai hexagram. The Book of Changes ninth-three line "constant vigilance throughout the day" describes this sustained ascension of Yang energy contending with triple Yin.

"Dragon-Tiger copulation" signifies: Yin (water tiger) above and Yang (fire dragon) below. By the Mao hour (5-7 AM), quadruple Yang arises beneath double Yin, forming the Dazhuang hexagram. The Book of Changes ninth-four line "leaping from the abyss" illustrates this rising Yang energy. Here the Yang dragon gains dominance over the Yin tiger (symbolized by the Kan hexagram's Yang containing Yin), achieving conjugal union. The tiger represents Yang within Yin (the middle son in Kan), while the dragon signifies Yin within Yang (the middle daughter in Li) - this essential interplay of Yin and Yang constitutes the fundamental principle of alchemical transformation.

The Dragon-Tiger Reverted Elixir Formula elucidates the principles of Yin-Yang transformation in Neidan (internal alchemy) practice. The core message of the original text states:

The alternating transformations of Yin and Yang manifest the Dao itself. During cultivation, the "kindling fire" technique (activating Yang energy) is crucial yet perilous, akin to the dangers of battle. When the Yin Tiger (Yin energy) weakens and the Yang Dragon (Yang energy) flourishes, the Yin Tiger fails to recognize its time has passed, still attempting to suppress fire with its watery nature. Meanwhile, the Yang Dragon remains unaware it has reached the "Chen position" (southeast, symbolizing the zenith of Yang) and attained the "ninth-fifth position" (supreme status). This mirrors the I Ching's "flying dragon in the heavens," creating the risk of conflict.

The Perfected One declares: Those who understand when the Golden Tiger (Yin energy) lies dormant and discern the chorus of the Five Dragons (the authentic Qi of the five viscera) fully grasp the celestial patterns of heaven and earth. Within the human body flows the "Nine-Bend River" (the Conception Vessel, Ren channel), the pathway of pure Yang Qi. Practicing under the bright midnight moon, one must purge distracting thoughts until the mind becomes limpid as moonlight, then circulate the nine Yang cycles to refine Yin and Yang energies into the elixir. Upon ingestion, the true Qi will converge through the "Nine Rivers" (meridians) into the Dantian (Ocean of Primordial Qi).

Master Haichan's verse "The Nine Rivers lie wave-free as the Three Blossoms emerge" refers to the Three Blossoms—the vital Qi budding from the upper, middle, and lower Dantian. From the Zi hour (midnight) to the Si hour (mid-morning), these six two-hour periods constitute pure Yang, forming the Qian hexagram (symbol of unadulterated Yang). The Perfected One teaches that when the Six Dragons (six Yang phases) soar together, one ascends to the Qian heavens, achieving the state described as "traversing all under heaven in half a day"—the realization of a pure Yang body. Though this moment is called "Great Yin," the sun has already reached the Si position (apex of Yang), allowing practitioners to glimpse crows (lingering Yin residues) fleeting through the "moonlit radiance of the Crooked River."

The text concludes with the mutual engendering of heaven and earth's Five Phases: heaven's sequence is Water, Wood, Earth, Fire, Metal; earth's follows Fire, Metal, Water, Wood, Earth. All arise from the interplay of Yin and Yang energies, with Earth's De (virtue/power) as their foundation. Cultivators must master these pivotal moments of Yin-Yang ebb and flow.

This passage elucidates the core principles and operational methods of Daoist alchemy:

Regarding the formation of the "knife measure" (daogui, an alchemical term denoting the essence of the Golden Elixir): During the alchemical process, medicinal substances are blended within the crucible. True gold (symbolizing pure Yang Qi) emerges from the union of two earthly elements (representing Yin and Yang energies), which transforms into golden liquid (the fluid form of the Golden Elixir) through precise fire regulation. This golden liquid circulates through the body's meridians: ascending to the Muddy Pellet Palace (upper Dantian) at the crown, descending to the Hua Pool (oral cavity), then swallowed to sink into the Crimson Palace (middle Dantian), before finally returning to the alchemical crucible (lower Dantian), creating an endless cycle that nourishes the body. As the Cantongqi describes, the elixir's essence disperses throughout the body like mist and dew.

Concerning the mystery of "generating being from non-being": Ordinary people find it hard to believe that practitioners can cultivate an "infant" (referring to the internal elixir) from emptiness. This describes the process of gestating primordial Qi from the void through cultivation, thereby achieving the Great Dao of the Golden Elixir.

On discerning "the purity of water's source": The lower Dantian is called the Chaos Ocean (Qi Sea), where practitioners must clearly distinguish the origins of Yin and Yang. The two energies must be precisely harmonized, as any deviation will affect the alchemical outcome.

Regarding the regulation of Five Phase mutual generation and restraint: The Five Phases (Wood, Fire, Earth, Metal, Water) interact through cycles of generation and restraint (e.g., Metal restrains Wood, Wood generates Fire). Practitioners must skillfully arrange their positions within the Eight Trigrams (Qian, Kan, Dui, Kun, etc.) to balance their energies within the central crucible (the Earth position at the center). This is the meaning behind "when the Five Directions complete their course, the Elixir's name is obtained."

Finally, it emphasizes: These alchemical secrets must be transmitted personally by a master, as they cannot be truly grasped otherwise. Practitioners must first establish the crucible (referring to foundational bodily cultivation) before circulating essence and Qi according to the principles of the Nine Palaces and Eight Trigrams.

The Dragon-Tiger Reverted Elixir Formula scripture expounds the essential principles and significance of cultivating the Golden Elixir (Jindan) path:

Attaining the Golden Elixir is the supreme endeavor for transcending worldly dust and ascending to immortality. Without direct transmission from an enlightened master, ordinary people could never fathom its profound and subtle mysteries. The scripture states: "To open the gate of mystery (referring to the crux of cultivation), one must rely on guidance from a luminous teacher." Even the wise find it difficult to comprehend, let alone the ignorant.

The essence of elixir refinement lies in grasping the most subtle arcane mechanism—seizing the secrets of cosmic creation amid imperceptible transformations. Without discovering this mysterious gateway, the Great Dao of the Golden Elixir cannot be accomplished.

The celestial mechanism (referring to cultivation mysteries) is unfathomably profound, as distant and boundless as the vast heavens. Only those versed in the ways of immortals can understand it. The scripture declares: "Who would have imagined that the secret to immortality lies within one's own grasp?"

The text emphasizes the urgency of practice: Human life is as fleeting as duckweed adrift; the cycles of birth and death pass in the blink of an eye. Thus, Perfected Ones (those who have attained the Dao) earnestly urge seekers to promptly seek the true path and practice elixir methods to transcend the mundane world—delay is impermissible.

Finally, it describes the state of immortal attainment: Penglai (the legendary immortal mountain) lies beyond mortal reach. Only through successful refinement of the Golden Elixir can one achieve the wondrous union of form and spirit (Xing-Shen), mounting dragons and cranes to soar through the clouds. Yet cultivating the Golden Elixir demands not only alchemical skill but also the accumulation of "three thousand virtuous deeds and eight hundred merits" (referring to hidden virtuous actions). Only thus can one truly escape the bitter sea of worldly existence and reach the carefree realm of immortals. This truth is irrefutable.

(Note: "Dragon-Tiger" are Neidan terms representing the Yin-Yang energies within the body; "Reverted Elixir" refers to refining Jing (essence), Qi (vital energy), and Shen (spirit) to return to the primordial state of pure Yang.)