The Nei Jing Tu (内经图, “Chart of the Inner Warp”) depicts the human body as a sacred mountain landscape through which vital energy (qi) flows and is refined into an immortal elixir. The stele was engraved in 1886 at the Baiyun Guan (White Cloud Monastery) in Beijing.
Two poems attributed to the immortal Lü Dongbin (县洛孹) are woven throughout. Every mountain, river, and figure is a precise instruction for inner transformation.
Read bottom to top. The alchemical journey of jing (vital essence) begins at the perineum and ascends the spine to the crown of the head, following the Governor Vessel of the Microcosmic Orbit.
At the very bottom — the perineum (Huiyin CV-1) — a boy and girl work a waterwheel treadmill. Their labor represents the first act of neidan: sealing the lower gate and reversing the downward flow of vital essence (jing) back upward along the spine.
The Three Gates (san guan) run upward from the treadmill: (1) Weilu Gate at the coccyx (GV-1), (2) Jiaji Gate at the mid-spine (GV-6), and (3) Yuzhen (Jade Pillow) Gate at the occiput. Essence must pass through each before entering the head.
Kristofer Schipper (The Taoist Body, 1993): “The ‘mysterious female’ (xuanpin) of Laozi Chapter 6 — the gate of all creation — is precisely this lower seal. Its activation through reversal is the primordial act of all Daoist cultivation.”
The ox and plowing figure represent the Lower Dantian (下伫田), three finger-widths below the navel — primary storehouse of jing and foundational “field” of practice. The “iron ox” is the disciplined willpower needed to tend this field; “golden coins” are the concentrating qi that accumulates as vitality is conserved.
Small flames mark the Gate of Life (Mingmen 命门) — the yang fire between the kidneys that powers the upward movement of essence. This region is also called the “Yellow Court” (黄庭), the Earth-phase center of cultivation.
Louis Komjathy (Journal of Daoist Studies, 2008): “The agricultural metaphor is precise: the adept must first prepare the ground — stabilize health, conserve essence — before any alchemical planting can occur. The lower field is the ‘Ocean of Qi’ (qihai) and is the foundation without which the upper work cannot proceed.”
The green forest on the right represents the liver (Wood phase, East, hun soul). The organ spirit names here are direct quotations from the Yellow Court Scripture (黄庭经, 3rd c. CE):
Livia Kohn (The Taoist Experience, 1993): “These names encode the Shangqing practice of inner visualization (cunsi) — meditating on each organ as inhabited by a divine being. Health is not merely physical but depends on the clarity and presence of each organ’s divine occupant.”
The woman at the spinning wheel is the Weaving Maiden (织女, the star Vega). She represents the kidneys and trigram Kan-water (塗) — yin essence, the vital substrate of life. In the Qi Xi legend she and the Cowherd are separated by the Milky Way — in neidan, their separation encodes the work: uniting Kidney-Water below with Heart-Fire above.
Louis Komjathy: “The Qi Xi mythology functions as an alchemical instruction manual. Kidney-Water (Weaving Girl / Vega / Kan 塗) must ascend to meet Heart-Fire (Cowherd / Altair / Li 离). Their union generates the Golden Elixir — a cosmological marriage enacted within the practitioner’s own body.”
The figure with the Northern Dipper (北柃) and coins is the Cowherd (牛鈏, the star Altair). He represents the heart and trigram Li-fire (离) — spirit (shen) and consciousness. The four Taiji symbols near this region mark where Fire and Water balance: shui huo ji ji (水火杼然, “Water and Fire Already Balanced”).
Fabrizio Pregadio (The Encyclopedia of Taoism, Routledge): “The fundamental operation of neidan is inversion (diandao): Kan-water replaces the yin-line within Li-fire, Li-fire replaces the yang-line within Kan-water — generating pure Qian (☰) and Kun (☷), the Prior Heaven polarity from which the Golden Elixir is born.”
The pagoda represents the trachea with its twelve cartilaginous rings — passage through which Jade Dew (yuye) descends. This refined saliva, generated during meditation and swallowed deliberately, purifies the heart (the Scarlet Palace 罫宫) as it travels downward to nourish the Lower Dantian.
Louis Komjathy: “The conscious cultivation of saliva is foundational throughout all neidan lineages. The Twelve-Storied Tower is the body’s internal alchemical conduit between heaven (head) and earth (abdomen) — its ‘secret’ is the intersection of refined fluids and breath.”
The tongue is the Descending Bridge — the pivot between ascending (Governor Vessel / spine) and descending (Conception Vessel / front) halves of the Microcosmic Orbit. When the tongue touches the upper palate, it completes the energy circuit. The “four great seas” (of qi, blood, marrow, and grain-fluids) are harmonized when both vessels are open.
Louis Komjathy: “The Governor Vessel (Du Mai 督脱) carries the qi of the five yang organ-systems; the Conception Vessel (Ren Mai 任脱) carries the five yin. Their convergence here at the throat confirms the Microcosmic Orbit is complete the moment it enters the head.”
Laozi (meditating in the forebrain) represents lead — original spirit (yuanshen), the earthward principle. Bodhidharma (arms raised) represents mercury — original qi (yuanqi), the heavenward principle. Their union is the final synthesis of the Golden Elixir. The Nine Peaks map the Nine Palaces (九宫) of the brain. The Niwan Palace at the crown (acupoint Baihui, GV-20) is where the yang-spirit (yangshen) exits the body upon completion of the Great Work.
Kristofer Schipper: “According to the Xiaodao lun, Laozi transformed his body into the cosmos — his left eye became the Sun, his right the Moon, his head Mount Kunlun. The diagram depicts the adept’s potential to undergo the same cosmicization: the practitioner’s body becomes the universe.”
This apex inscription equates Daoist immortality (xian) and Buddhist Buddhahood (fo) — the syncretic hallmark of the Longmen Quanzhen lineage. “A grain of millet contains the world” encodes the microcosm-macrocosm identity at the heart of Daoist cosmology: the practitioner’s body is the universe.
Louis Komjathy (Journal of Daoist Studies): “The apex inscription is the most doctrinally significant line in the diagram. Buddhist and Daoist soteriologies are understood as two names for the same transformation: the cosmicization of the practitioner, whose body becomes the universe and whose awareness merges with the Dao.”