《上陽子金丹大要》Vol. 5

This scripture elucidates the core principles of Daoist Neidan (internal alchemy) practice. Chen Zhixu of the Purple Empyrean Palace, known as Master Shangyangzi, expounds on the profound mysteries of the Golden Elixir (Jindan), the highest attainment in internal alchemy cultivation.

The text first clarifies that the essence of Golden Elixir cultivation lies in the application of "golden fire." Here, "gold" does not refer to mundane metal but to "true lead" (primordial essence). As lead is the source of silver and gold, the term "gold" is used collectively. This "gold" represents the ancestral Qi (primordial energy) of the cosmos, existing before the formation of the material world. Practitioners must trace back to the undivided state of Taiji (Supreme Ultimate), seeking the unborn primordial Qi within the manifested world to refine it into a body of pure yang—this is the "Elixir."

Using imagery from the Yijing (Book of Changes), the text illustrates: pure yang corresponds to the Qian hexagram (☰), while pure yin corresponds to Kun (☷). The human body resembles the Li hexagram (☲, yang outside with yin inside), requiring the extraction of the yang line from the center of the Kan hexagram (☵, yin outside with yang inside) to replenish Li's yin, thereby achieving the pure yang Qian state. Because the central yang line in Kan belongs to "gold," this process is called the "Golden Elixir."

The true Golden Elixir is neither material gold, lead, nor silver, but the primordial Qi. As Master Yuandu (a patriarch of internal alchemy) stated, "The primordial Qi emerges from emptiness." The Huangting Jing (Yellow Court Scripture) similarly mentions that immortality can be attained through absorbing this primal Qi. Patriarch Lü (Lü Dongbin) wrote that sages can return to the primordial Qi, uniting their original spirit (Shen) with the Dao. This state—embodying the true meaning of both innate nature and life force while perfecting both form and spirit—constitutes the path of the Golden Liquid Returning Elixir.

This is no ordinary technique but the supreme cultivation method encompassing the transformations of yin-yang and the principles of Taiji. It enables practitioners to return to their origin, ultimately achieving unity with the Dao.

The key to cultivating the Golden Elixir (Jindan) is actually quite simple—with the correct methods, even ordinary people can transcend mundanity and enter sagehood. The essence of attaining immortality lies in eliminating yin energies (referring to negative emotions and distracting thoughts) and returning to the state of pure yang (a pristine, uncontaminated state of being).

Dan Yangzi (a patriarch of the Quanzhen tradition) once said: When the mind is settled, desires naturally fade; when the body is empty, Qi (vital energy) flows naturally; when delusive thoughts cease, the original spirit (Yuanshen) becomes active; and when yang energy is abundant, yin energy dissipates on its own. After receiving proper guidance from an enlightened master, true practitioners must swiftly purge the turbid yin energies within their bodies and return to their original pure yang nature.

Ying Chanzi (Bai Yuchan) added: Ordinary people do not die because their yang energy is not yet exhausted, while cultivators cannot attain immortality if yin energy remains uneliminated. When distracting thoughts are severed, yin energy disperses; when illusory attachments are relinquished, yang energy grows. Once yin is fully purified and yang reaches its purest state, the Golden Elixir naturally matures, enabling ascension to immortality.

On the profound application of the "medicine": The Yellow Emperor once said that humans are "thieves of the myriad things" (referring to how the body absorbs the essence of heaven and earth). The movements of the sun and moon follow inherent patterns, within which sacred power resides. The Jinbi Jing (Golden Jade Scripture) records "refining silver from lead" (a metaphor for extracting the refined from the mundane), while the Cantong Qi (Triplex Unity) emphasizes that substances of the same kind interact more effectively (referring to the need for yin-yang alignment in cultivation).

Dan Yangzi explained through layered metaphors: Spirit (Shen) and Qi are the nature (Xing) and life (Ming). Nature and life are like the dragon and tiger (symbols of yin-yang), which in turn correspond to lead and mercury (alchemical materials). Lead and mercury are essentially water and fire (forms of energy), and water and fire represent the infant (pure yang) and the maiden (pure yin). Zhang Boduan (Ziyang Zhenren) pointed out: Merely swallowing saliva or inhaling breath is superficial practice—there must be a "true seed" (primordial Qi) within the body to initiate transformation. Otherwise, it's like trying to cook with an empty pot.

Chen Zhixu (Shangyangzi) revealed: The alchemical scriptures left by immortals throughout history never directly disclose the true nature of the "medicine." References to metal, wood, water, fire, lead, mercury, cinnabar, and silver are all metaphors. Yet worldly people mistakenly believe literal minerals are used, which is lamentable. The true medicine, though extracted from material substances, is no ordinary metal or herb—it exists within form yet transcends form, resembling gold but not gold, resembling water but not water. The medicine is divided into external and internal: the external medicine refers to the primordial true water (Yuanjing) extracted from kidney water (the Kan trigram), while the internal medicine is...

This scripture elucidates the core concepts of "external medicine" (waiyao) and "internal medicine" (neiyao) in Daoist Neidan (internal alchemy) practice. The so-called "lead" (waiyao) refers to the primordial Qi (vital energy) extracted from the kidney water—it resembles white within black, Yang within Yin, representing the fundamental source of all things in heaven and earth. The kidneys store Jing (essence), and within this essence lies Yang energy. This Yang energy is gentle yet firm, much like how metal can generate water, and through specific methods, it can be extracted.

On the other hand, "mercury" (neiyao) is the primordial true liquid obtained from the heart fire, akin to black within white, Yin within Yang. The heart stores blood, and within this blood lies the true liquid. This liquid carries Yin within Yang, much like how wood can generate fire. In cultivation, one must reverse conventional logic, allowing the mother to hide within the child—hence the sayings "the tiger is born from water" and "the dragon emerges from fire."

Master Yingchanzi (a revered Daoist adept) explains that ordinary practitioners should begin with external medicine before progressing to internal medicine. However, those with profound foundations may directly cultivate internal medicine. External medicine belongs to the realm of "action" (youwei), involving concrete methods to refine the physical body, while internal medicine belongs to "non-action" (wuwei), directly refining the formless and immaterial true nature. External medicine leads to the attainment of terrestrial immortality (dixian), while internal medicine leads to celestial immortality (tianxian)—one cultivates "life" (ming), the other "nature" (xing).

Master Wumingzi further elaborates: the Li trigram (symbolizing heart fire) is Yang on the outside and Yin within, while the Kan trigram (symbolizing kidney water) is Yin on the outside and Yang within. By using internal Yang to transform internal Yin, one can attain the pure Yang state of the Qian trigram. This embodies the Daoist core principle of harmonizing Yin-Yang and the dual cultivation of nature and life (xingming shuangxiu).

This scripture elucidates the mystery of the "Golden Elixir" (Jindan) in Daoist cultivation, which encompasses two approaches: external alchemy (Waidan) and internal alchemy (Neidan). Just as the purest Yang Qi condenses within the Yin sea, practitioners can transform their innate Yin mercury (symbolizing the vital essence, Jing, within the body) into a body of pure Yang.

External alchemy (Yang elixir) involves refining medicinal substances in an external furnace. It requires gathering the True Unity Qi (Zhenyi Qi, also called True Lead or Divine Water of the Hua Pool) from heaven and earth. This primordial Qi existed before the formation of the cosmos and serves as the origin of all creation. When practitioners collect this True Lead into the suspended womb crucible (a symbolic alchemical vessel) and combine it with mercury (representing the body's vital essence), the external elixir is forged.

Internal alchemy (Yin elixir) employs inner cultivation methods. After obtaining the external elixir, practitioners must circulate the Yin-Yang talismanic fire (referring to breath regulation techniques) within their bodies for gradual nurturing. As Patriarch Danyang taught: When the heart's fire descends and the kidney's water rises, mingling like mist in the Yellow Court (the Dantian region), the internal elixir takes form. This practice emphasizes natural non-action (Wuwei), as stated in the Awakening to Reality (Wuzhen Pian): "There's no need to rigidly tend the medicinal furnace or monitor the fire—simply allow the spirit (Shen) and breath to flow spontaneously."

Techniques like "heel breathing" (Zhongxi, breathing through the heels) and "turtle breathing" (Guixi, slow, deep respiration resembling a turtle's) refer to the profound, rhythmic breathing methods essential for cultivation. This true fire (inner medicine) is key to nurturing the sacred embryo (Golden Elixir). By harmonizing spirit and breath, circulating Yin-Yang, and balancing the water (Kan) and fire (Li) of respiration, practitioners ultimately achieve the union of Kan and Li, producing golden nectar (the essence of the elixir) and completing the Golden Elixir refinement.

The Scripture of the Hidden Talisman (Yinfu Jing) mentions a mystical vessel capable of generating all phenomena in the world. The Supreme Venerable Sovereign (Taishang Laojun, the highest deity in Daoism) states that precisely because it is empty within, it can fulfill its function as a vessel. The Dragon-Tiger Scripture (Longhu Jing) describes this vessel as having a raised center, shaped like the mythical Penglai Immortal Isle. Though tightly sealed without gaps, it can circulate divine spirits within.

The design of the furnace and stove (alchemical apparatus) follows the principle described in the Yellow Court Scripture (Huangting Jing): "The two apertures of entry and exit merge in the Yellow Court; breathing into emptiness reveals my form." Master Boyang (Wei Boyang, an Eastern Han alchemist) points out that these two cavities emulate the movement of metallic Qi (Jin Qi) and operate in harmony. Master Ziyang (Zhang Boduan, a Song Dynasty Neidan adept) further explains that one must first take Qian (Heaven) and Kun (Earth) as the cauldron and vessel for alchemy, then gather the energies of the Golden Crow (the sun) and Jade Rabbit (the moon) for refinement.

Master Shangyang (a Yuan Dynasty Neidan master) clarifies that the names of these vessels vary, and without guidance from an enlightened teacher, they remain obscure. Some call them the "Qian-Kun Cauldron," others the "Kan-Li Framework" (Kan and Li representing Water and Fire), while alternative names include the "Mysterious Pass Single Cavity," the "Supreme One Divine Furnace," the "Divine Chamber Yellow Room," and the "Primordial Chaos Elixir Cauldron," among dozens more—such as the "Yang Furnace," "Yin Cauldron," "Jade Furnace," "Golden Cauldron," "Reclining Moon Furnace," "Suspended Embryo Cauldron," "Two-Eight Furnace," "Cinnabar Cauldron," "Upper and Lower Crucibles," "Inner and Outer Cauldrons," "Golden Chamber," "Majestic Light Cauldron," and "Eastern Yang Creation Furnace." Though the names are numerous, each serves a distinct purpose.

Take, for example, the distinction between inner and outer cauldrons: The inner cauldron refers to the lower Dantian (a vital center in bodily cultivation), located three inches below the navel. Some say it lies between the navel and kidneys, others describe it as facing the navel with the kidneys behind, while yet others place it below the navel but above the kidneys. These descriptions are akin to shooting at a target in the dark. Practitioners need only recognize the core position of the lower Dantian as the standard, for it is the gathering place of Shen (spirit) and Qi, spanning roughly four inches in diameter. It is also called the "Supreme Central Pole"—indicating its position as the center of the body’s vertical and horizontal axes. It is called the "Great Sea" because it contains the blood and Qi of the entire body. The Awakening to Reality (Wuzhen Pian) states, "When the true Jing (essence) returns to the golden chamber, a single luminous pearl remains unmoved," while Li Qing’an (a Song Dynasty Daoist) writes, "After the union in the Qian Palace, a single point descends to the Yellow Court"—both referring to this inner cauldron and divine chamber.

As for the outer cauldron, it is known by names such as "Valley Spirit," "Divine Vessel," "Mysterious Pass," "Gate of the Mysterious Feminine (Xuanpin, the source of life in Daoism)," "Gate of All Wonders," and "Wondrous Cavity of Being and Nonbeing." These descriptions are like playing a flute for the deaf. Practitioners need only understand that this is the crucial point for gathering energy. Master Ziyang’s saying, "To make the Valley Spirit eternally undying," refers precisely to mastering this key.

This passage elucidates key concepts in Daoist Neidan (internal alchemy) practice concerning the "Mysterious Feminine" (Xuanpin) and the alchemical furnace-cauldron system. It first corrects Ye Wenshu's mistaken interpretation that identifies the "Mysterious Feminine" as the Hunyuan point between the kidneys. In truth, the "Mysterious Feminine" represents the fundamental Yin-Yang duality—without these two primordial forces, nothing in creation could manifest. Both Waidan (external alchemy) and Neidan practices originate from this principle, which ancient sages secretly termed the "Reclining Moon Furnace" and "Suspended Embryo Cauldron."

The Cantong Qi (Kinship of the Three) describes the furnace-cauldron apparatus with precise measurements: a circular form with a diameter of three-and-a-half inches, a mouth width of four-and-eight-tenths inches, furnace lips two inches thick, standing twelve inches tall with uniform thickness. The three-part structure symbolizes the triad of Heaven-Earth-Humanity, while the crescent-shaped furnace mouth gives rise to its poetic name "Reclining Moon Furnace." These descriptions metaphorically represent external alchemical vessels.

True immortals and masters employ such concrete imagery as teaching devices to help later practitioners comprehend the underlying principles. Measurements like "three-and-five-tenths inches in circumference" remain incomprehensible without proper oral transmission. Though Ye Wenshu claimed enlightenment at Danqiu (Cinnabar Hill), his explanation of the "Mysterious Feminine" clearly lacked authentic transmission—mere speculation proves futile.

Key symbolic interpretations: The Reclining Moon Furnace belongs to Yin, yet contains Yang Qi resembling jade stamens (called "Tiger's Chord Qi"), with its crescent mouth representing the Yin sea that nurtures primordial true fire. The Cinnabar Cauldron embodies Yang, housing Mercury-like Yin Qi (termed "Dragon's Chord Qi"), named "Suspended Embryo Cauldron" for hanging eight inches deep within the furnace without touching the base. Practitioners must transcend literal readings to grasp these profound analogies—the true meaning resides beyond physical measurements.

The Yinfu Jing reveals a profound truth: there exists a hidden operating mechanism ("stealing the opportunity") in heaven and earth that ordinary people neither see nor comprehend. Those with virtue (De) who master it can find contentment in poverty and joy in the Dao, while those with ill intent who obtain it will only bring calamity upon themselves.

The Huangting Jing, from a cultivation perspective, points out that the throat (Xuanying) is the passage of breath, and the lower Dantian (the "reservoir of essence") is where essence (Jing) is stored. Practitioners must firmly safeguard their essence and vital energy (Qi). The Cantong Qi uses metaphors to explain cultivation principles: just as white substances turn red through refinement, or like the celestial phenomenon where the Pleiades and Hyades (among the twenty-eight lunar mansions) show signs of vibration, symbolizing the sprouting of Yang energy—akin to the hidden dragon in the first line of the Yijing (Hexagram Qian, "Initiating"), biding its time for action.

The Jinbi Jing employs the analogy of a magnet attracting iron to illustrate the interaction of Yin and Yang: even through obstacles, they connect in unseen ways. Master Zhongli Quan (Zhengyang Zhenren) clarifies the key: the fusion of the tangible and intangible is the foundation of alchemy. Zhang Boduan (Ziyang Zhenren) further elaborates: when "lead" (kidney essence, Jing) encounters "Gui water" (the initial stirring of kidney Yang), it must be gathered promptly; when "sweet dew" (primordial Qi) descends, heaven and earth naturally harmonize Yin and Yang; and where the "yellow sprout" (the nascent Golden Elixir) emerges is precisely where Water (Kan) and Fire (Li) intersect.

The Zhuzhen Yizhuan interprets timing through celestial phenomena: on the last day (Hui) and the first day (Shuo) of the lunar month, the moon (Kan) and sun (Li) meet in the direction of Ren and Gui; at dusk on the third day, the new moon, symbolized by the Zhen trigram, appears in the direction of Geng.

Chen Zhixu (Shangyangzi) emphasizes a crucial point: reading scriptures requires grasping the true intent of the ancients—rote memorization is meaningless. For instance, celestial secrets like the sun and moon meeting in the Ren-Gui direction or the Zhen trigram appearing at dusk on the third day—how could they be understood by casually glancing at dawn? Core principles such as "the interaction of being and non-being" or "urgently gathering at the birth of Gui" cannot be truly mastered through guesswork without direct oral transmission from a genuine teacher.

So what is the true meaning of "interaction"? It is achieving fusion through non-interaction; "union" is attaining harmony through non-union; "gathering" is completing the act without deliberate effort. Specifically:

• "Gathering without gathering" is like naturally obtaining when splitting open the primordial chaos (Hongmeng).
• "Interaction without interaction" resembles natural fusion when chiseling open chaos (Hundun).
• "Union without union" occurs in the indistinct and obscure state of profound stillness.

The key to cultivation lies in seizing critical moments: tracing the origin of the Supreme Ultimate (Taiji) before heaven and earth divided (Hongmeng), capturing the initial stirring of Gui Yang as chaos first opens, and discovering the true mechanism within the formless void. Hongmeng is like the nascent form of an egg, containing the mystery of the central Earth (Zhonghuang, Wuji); Hundun is akin to the moon rising from the Geng-Shen direction, with the energy of the Zhen trigram sprouting in the Pleiades and Hyades. Observing the differentiation of an egg reveals the beginning of the Supreme Ultimate, while calculating the moon's appearance in the Geng direction unveils the timing of Yang energy's rebirth.

Finally, the secret is unveiled: the true essence of cultivation lies in tracing the origin of life (the place of birth) and achieving the interaction of Yin and Yang in the "Qian palace" (the head). The "nameless one" (a Neidan term referring to primordial Qi) speaks of "Gui birth" corresponding to the Chou hour (1–3 a.m.), and Zhang Boduan's "first movement of the White Tiger" (the initial stirring of Western Metal energy) also points to this pivotal moment.

This passage explains the timing and precautions for "gathering the medicinal ingredients" (caiyao) in Daoist internal alchemy (Neidan) practice. "Gathering the medicinal ingredients" refers to the crucial step where practitioners collect their vital essence (Jing) and energy (Qi) for alchemical refinement.

The text mentions the special hour of "Gui day at midnight" (癸日子时), emphasizing the need to seize this precise moment without delay. However, it clarifies that "Gui" and "Zi" here aren't merely referring to calendrical terms of the Heavenly Stems and Earthly Branches, nor does "Zhen" simply denote the Thunder trigram from the Yi Jing. The true essence lies in recognizing when the body's yin and yang energies (symbolized as Kan and Li) converge—like the moon rising in the east—at which point practitioners must enter a state of subtle trance (huanghu yaoming), a profound meditative absorption. These experiences must be perceived through bodily awareness rather than fixating on external timekeeping.

Master Shangyangzi emphasizes that contemporary discussions about gathering ingredients must clarify two points: what instrument performs the gathering, and what force enables it. Master Yuandu explains: human luminous awareness constitutes "non-being" (the formless spirit/Shen), while the movement of vital energy constitutes "being" (the tangible Qi). Patriarch Zhenyang illustrates this through the metaphor of "piercing heaven and penetrating earth," demonstrating how this miraculous power originates from the primordial spirit (Yuanshen).

Practical methods include: relinquishing self-awareness ("laying down the mountains of ego"), and opening key energy points ("unblocking the Dragon-Tiger cavity"). The Can Tong Qi advises sealing the three portals (eyes, ears, and mouth), allowing true intention to sink into the dantian ("the true person enters hidden depths"), while maintaining single-minded focus on internal transformations. External sensory activities must cease to achieve a state of empty stillness and non-action (Wuwei).

Special protective measures are required during ingredient gathering, comparable to the Yi Jing's Fu hexagram revealing "the heart of heaven and earth," or ancient kings observing winter solstice in meditative seclusion. The instructional poem uses metaphors like "sealing the mouth and lowering the blinds" and "white snow" (representing external alchemical substances) to illustrate maintaining silent vigilance until the "lunar orb" (symbolizing the internal elixir) manifests.

The passage concludes with Guangchengzi's admonition to the Yellow Emperor: safeguard the spirit internally while closing the senses externally, as excessive knowledge becomes detrimental. Only through this can one reach the supreme yang state of the "Great Illumination."

This scripture expounds the core principles and concrete methods of Daoist Neidan (internal alchemy) practice. It first points out that the "Gate of Profound Darkness" and the "Source of Utmost Yin" are crucial to cultivation. Ordinary people believe all things have limits, but Dao practitioners must transcend this cognitive boundary. The "Mysterious Feminine" (referring to the fundamental union of Yin-Yang) serves as the gateway to infinite mysteries.

The method transmitted by Master Ziyang (a key figure in Daoist Neidan tradition) involves: using "Earth Soul" (the Yang Qi from kidneys, also called "Tiger") to capture "Cinnabar Mercury" (heart fire), while employing "Heavenly Spirit" (the Yin Qi from heart, also called "Dragon") to control "Water Metal" (kidney essence). Here the "Tiger" represents lead (original Qi from kidneys) as the dominant force, and the "Dragon" symbolizes mercury (original Shen from heart) as the supporting element. Through the cultivation process of Yin-Yang union and water-fire balance, the Golden Elixir ultimately coalesces.

Master Zhengyang further clarifies: The gathering of medicinal ingredients (essential Qi) should begin from the Nine Palaces at the crown before descending to the Yellow Court (middle Dantian); the extraction of lead (original Qi) must start from the lower Dantian before ascending to the Inner Court (upper Dantian). The circulation of "Jade Nectar" (saliva) and "Golden Fluid" (essential Qi) refines the physical form, causing kidney water to rise. The coordination of "Monarch Fire" (heart fire) and "Minister Fire" (kidney fire) smelts the elixir, making heart fire descend. When the Five Qi (energies of five organs) return to their source and Three Flowers (Jing, Qi, Shen) gather at the crown, higher spiritual states are achieved.

Master Shangyang ultimately emphasizes: Authentic cultivation isn't mere physical refinement, but involves harvesting "Primordial Qi" (cosmic source energy) and "True Unity Essence" (innate human vitality). Practitioners must generate "Yellow Sprouts" (embryonic elixir) through "Dragon-Tiger Copulation" (heart-kidney interaction), continuously extracting lead and replenishing mercury (gathering original Qi and refining spirit), until the Great Medicine (Golden Elixir) is perfected. Specific techniques include operating the River Chariot (microcosmic orbit circulation), irrigating with Jade Nectar, and ascending Golden Crystals—all designed to circulate genuine Qi and nourish the Embryonic Immortal (original spirit).

This passage explains the crucial method for obtaining "true lead" (primordial essence) in Neidan (internal alchemy) practice. First, one must understand that authentic "herb gathering" is not the misguided practices promoted by heterodox schools—such as collecting sexual fluids to replenish the brain or engaging in debased bedroom arts. These are erroneous paths taken by the ignorant who lack proper guidance from enlightened masters.

The practitioner must trace back to the origin of life and contemplate the mysterious state before the separation of heaven and earth. Just as the moon, though dark during the new moon, regains its light when illuminated by the sun, or as the southwest receives brightness while the west (represented by the direction Geng) radiates light to form the Zhen trigram (east)—understanding these principles reveals that humans are born from the "true unitary Qi" within primordial emptiness. This is the root of "true lead."

What, then, is the source of "true lead"? When chaos first divided, the Qian trigram (pure Yang) transformed into the Xun trigram (wind), then into the Li trigram (fire), yet the true Yang energy resides within the Kan trigram (water). Thus, the metal (true lead) within Kan originally belongs to Qian—this is the true origin of lead. The so-called "mother of mothers" refers to the numinous essence contained within the undifferentiated substance before the formation of heaven and earth. This is the genuine source.

After comprehending the principle of herb gathering, the practitioner must also master the proper timing. Within a month, there is only one suitable day; within a day, only one two-hour window. This period is further divided into six "watches" (approximately 20 minutes each), of which only two are used for gathering the herb, while the remaining four are reserved for refining the elixir. The key to refining lies in uniting one’s own "mercury" (spirit-shen) with the "lead." At this stage, breath must be regulated to guide the true Qi from the Mysterious Pass (Dantian) upward to the Celestial Valley (crown of the head) before swallowing it into the Golden Chamber (middle Dantian). This is the initial stage of "igniting the fire in the primordial year."

Master Zhenyi (True Unity) states: "Establish the cauldron and furnace (body as cauldron, mind as furnace) and revolve the celestial mechanism." At the beginning, there is no form—only a state akin to chaos. Once the fire is ignited and set in motion, the sprout of life begins to emerge. The Cantongqi (Seal of the Unity of the Three) says: "When Yin and Yang energies unite, the primordial year gives rise to new buds—this is the beginning of receiving Qi." An ancient verse declares: "Yellow sprouts (primordial Qi) combine with lead and mercury to form a Yin shell, within which Yang brilliance resides—this is what is called 'a man bearing a fetus.'" The practice of seated meditation and facing the wall is founded upon this very principle.

The fifth volume of The Great Essentials of the Golden Elixir (Jindan Dayao) by Master Shangyang (a renowned Daoist Neidan practitioner) specifically elucidates the wondrous applications of Golden Elixir cultivation. Here, Master Shangyang provides profound insights into the subtle operational methods of the Great Dao of the Golden Elixir.

In Daoist Neidan (internal alchemy) practice, the term "Golden Elixir (Jindan)" refers to the elixir of immortality forged through the refinement and transformation of Jing (essence), Qi (vital energy), and Shen (spirit). This volume particularly unveils the core principles and practical techniques involved in the cultivation process of the Golden Elixir.