《黃帝素問靈樞集註》Vol. 14

The Yellow Emperor inquired of Shao Yu (a legendary sage skilled in medicine): I have heard that all illnesses initially arise from exposure to wind, rain, cold, and heat. These external pathogens enter through the pores, moving between skin and muscles—some dissipate naturally, some linger within, some cause swelling with sweating, some lead to wasting-thirst disorders (similar to diabetes), some bring alternating chills and fever, some result in stubborn blockages, and some form accumulations and masses. These aberrant pathogenic influences wander unpredictably through the body with countless variations. Why do people exposed to the same conditions develop entirely different symptoms? Could it be that natural wind pathogens deliberately target individuals differently?

Shao Yu replied: The winds of nature treat all people equally, blowing impartially without bias. Whether illness occurs depends on one’s constitution—just as when a woodcutter chops different trees with the same axe, the results vary completely. Trees have sun-facing and shaded sides, textures both hard and brittle; where the wood is dense, the axe struggles to bite, while brittle bark splits easily. And between different species, the thickness of bark and abundance of sap differ even more.

He then illustrated with five natural phenomena:

• Trees that bloom early, struck by spring frost and harsh winds, will shed their blossoms.
• Prolonged drought drains the sap of thin-barked trees, causing them to wither.
• Endless rain makes trees with abundant sap rot through their bark.
• Sudden storms snap branches that are newly grown and fragile.
• Autumn frost and sharp winds strip such trees of leaves and damage their roots.

Each of these five harms has its own nature—and is the human body not the same?

The Yellow Emperor pressed further: How then should we understand the human body in relation to trees? Shao Yu explained: When trees are injured, it is mostly their branches that suffer; the sturdy trunk is rarely damaged. Likewise, people frequently fall ill when pathogens invade the relatively vulnerable areas—joints, skin, and the grain of the muscles. For example, those prone to wind disorders (similar to stroke) or night sweats can be assessed by examining their muscle texture: those with soft, slack muscles have loose skin grain, making them susceptible to repeated invasions of wind pathogens.

This dialogue records a discussion between the Yellow Emperor (the legendary ancient ruler revered in Daoism as a founding ancestor) and his medical officer Shao Yu about discerning disease predispositions through external physical characteristics.

The Yellow Emperor asked: How can we identify those with weak musculature who are prone to wind-pathogen invasion? Shao Yu replied: Those with soft flesh behind the knees and coarse skin texture have loose interstices between skin and muscles (couli), making them susceptible to wind pathogens.

The Emperor then inquired: What traits mark those predisposed to wasting-thirst disease (similar to diabetes)? Shao Yu explained: People with weakness in all five zang organs are vulnerable. To assess organ strength, observe temperament—those appearing gentle often conceal inner rigidity. The strong-willed are prone to anger, which drives Qi and blood upward to accumulate in the chest. This stagnation generates heat in skin and muscles, consuming bodily fluids to form wasting-thirst disease. This particularly applies to those with fiery tempers but frail musculature.

Regarding susceptibility to alternating chills and fever (malaria-like disorders), Shao Yu noted: Those with slender bones and thin muscles fall ill easily. The cheekbones reveal skeletal strength—small cheekbones indicate delicate bones. People with thin skin, flaccid muscles, slender arms, and uneven dull complexion typically have insufficient marrow, making them prone to febrile disorders.

For those predisposed to blockage syndrome (joint pain and numbness), Shao Yu said: Rough skin texture with weak muscles invites blockage, and the affected areas can be predicted by examining corresponding body regions.

Finally concerning intestinal accumulations (digestive tumors or masses), Shao Yu explained: Thin, dull skin with flaccid muscles indicates weak gastrointestinal function where pathogens stagnate to form accumulations. When cold and heat become imbalanced, these pathogens gradually consolidate into severe masses.

The Yellow Emperor acknowledged understanding these external manifestations of various conditions. This exchange exemplifies the Chinese medical principle of "inferring internal conditions from external observation," using surface features to deduce latent disease tendencies.

When the Yellow Emperor inquired of Qibo about the mysteries of human health, his minister Shaoyu first explained: One must first determine the year to understand seasonal changes. When climatic conditions become abnormal, diseases easily arise; even under normal weather patterns, encountering special years of elemental conflict can also trigger illness. This is how external environmental changes cause disease in the human body, known as the "Five Transformation Cycles" (wubian zhi ji).

The Yellow Emperor and Qibo then engaged in deeper discussion: The blood, Qi, Jing (essence), and Shen (spirit) form the foundation of human life. The meridians (qi-blood circulation channels) transport blood and Qi, harmonize Yin-Yang, nourish tendons and bones, and lubricate joints. Defensive Qi (weiqi) warms the muscles, fills out the skin, tightens the striae (skin texture), and governs the opening and closing of pores. Human willpower governs the spirit, stabilizes the ethereal and corporeal souls (hun and po), and regulates adaptation to temperature changes and emotional fluctuations.

When blood and Qi are harmonized, the meridians flow smoothly, Yin-Yang remains balanced, tendons and bones stay strong, and joints remain flexible. Harmonized defensive Qi makes muscles supple, skin soft and moist, with tightly closed pores. Balanced willpower brings focused spirit, stable hun and po, steady emotions, and protection of the five viscera from pathogenic factors. Appropriate temperatures allow the six bowels (digestive organs) to process food normally, preventing wind-damp blockages, keeping meridians unobstructed and limbs comfortable. This constitutes the normal state of healthy individuals.

The five viscera (heart, liver, spleen, lungs, kidneys) store Jing, Shen, blood, Qi, hun and po, while the six bowels process food and transport fluids. These functions are innate to all humans, shared equally by wise and foolish alike. Yet some people live out their natural lifespan without illness, unaffected even by harsh climates, while others fall sick despite remaining in safe environments all day. Why is this?

Qibo praised this profound question and explained: The five viscera correspond to Heaven-Earth's Yin-Yang and connect with seasonal transformations. Each person's viscera have innate variations—some large or small, high or low, firm or fragile, properly positioned or inclined—while the bowels differ in length, thickness, curvature and straightness. These individual variations manifest in twenty-five constitutional types, each determining one's health, fortune and misfortune.

This scripture discusses how variations in the size, position, and strength of the five internal organs (heart, lungs, liver, spleen, and kidneys) correspond to different health conditions and susceptibility to diseases.

Regarding the heart: Those with a small heart are less vulnerable to external pathogens but prone to emotional distress that harms the Shen (spirit). Those with a large heart are less troubled by worries but more susceptible to external pathogenic invasion. A high-positioned heart may cause chest tightness, forgetfulness, and speech difficulties, while a low-positioned heart makes one prone to colds and fright. A firm heart indicates stable health, whereas a fragile heart predisposes one to wasting-thirst disorders (similar to diabetes) and heat syndromes. A well-centered heart ensures balanced Qi and blood flow with fewer illnesses, while a deviated heart leads to mental restlessness and weak willpower.

Concerning the lungs: Small lungs correlate with low water intake and less susceptibility to breathlessness, while large lungs associate with higher water consumption and predisposition to chest obstruction, throat blockage, and rebellious Qi conditions. High-positioned lungs cause breathlessness, coughing, and shoulder-raising respiration, whereas low-positioned lungs lead to hypochondriac pain. Firm lungs resist cough and asthma, while fragile lungs invite wasting-thirst disorders. Properly aligned lungs function normally, but deviated lungs result in chest pain.

For the liver: A small liver indicates good health with few ailments, while an enlarged liver presses against the stomach and esophagus, causing indigestion and hypochondriac pain. A high-positioned liver creates rib discomfort and breathing difficulties, whereas a low-positioned liver leaves the hypochondrium vulnerable to pathogenic invasion. A sturdy liver ensures robust health, while a weak liver predisposes to wasting-thirst disorders. A centered liver functions properly, but a slanted liver causes rib pain.

Regarding the spleen: A small spleen suggests good health, while an enlarged spleen leads to abdominal discomfort and restricted movement. A high-positioned spleen causes floating rib pain, whereas a low-positioned spleen affects large intestine function and increases disease susceptibility. A solid spleen maintains health, while a delicate spleen risks wasting-thirst disorders. A properly positioned spleen functions normally, but an askew spleen results in abdominal distension.

Concerning the kidneys: Small kidneys indicate good health, while large kidneys predispose to back pain and limited mobility. High-positioned kidneys cause spinal pain, whereas low-positioned kidneys lead to lumbosacral pain and hernia susceptibility. Sturdy kidneys prevent back pain, while fragile kidneys invite wasting-thirst disorders. Well-aligned kidneys function properly, but misaligned kidneys cause lumbosacral pain.

The text concludes that these twenty-five organ variations represent common pathological patterns. When the Yellow Emperor (Huangdi) inquires how to diagnose these conditions, Qibo responds that one can assess heart conditions by observing the degree of redness in skin textures.

This passage explains how to assess the morphology and health conditions of the five zang organs (heart, lungs, liver, spleen, and kidneys) by observing external bodily features. Ancient physicians believed the state of internal organs manifests through external characteristics.

Regarding the heart: Those with slender sternums have small hearts, while those with broad sternums have large hearts. A prominently elevated sternum indicates a high-positioned heart, whereas a short, upturned sternum suggests a low-positioned heart. A long sternum corresponds to a sturdy heart, while a thin sternum indicates a fragile heart. A straight sternum reflects proper heart alignment, while a crooked sternum reveals cardiac displacement.

For the lungs: Fine skin texture signifies small lungs, while coarse texture indicates large lungs. Broad shoulders, protruding chest, and a recessed throat suggest high-positioned lungs; tight armpits and flared ribs denote low-positioned lungs. Thick shoulders and back imply robust lungs, whereas thin shoulders indicate fragile lungs. Symmetrical chest and back show proper lung alignment, while uneven ribs reveal pulmonary deviation.

Concerning the liver: Bluish skin with fine patterns indicates a small liver, while coarse patterns suggest a large liver. A broad ribcage with flared ribs points to a high-positioned liver; inwardly curved ribs (rabbit-like) suggest low positioning. Sturdy ribs correspond to a strong liver, while soft ribs indicate fragility. Balanced chest and abdomen reflect proper liver alignment, whereas asymmetrical ribs show hepatic displacement.

About the spleen: Yellowish skin with fine patterns denotes a small spleen, while coarse patterns mean a large spleen. Upward-curled lips indicate high spleen positioning; drooping lips suggest low positioning. Firm lips correspond to a strong spleen, while large, flaccid lips reveal spleen weakness. Symmetrical lips show proper alignment, whereas crooked lips indicate splenic deviation.

For the kidneys: Dark skin with fine patterns signifies small kidneys, while coarse patterns mean large kidneys. High-set ears suggest high kidney positioning; recessed areas behind the ears indicate low positioning. Thick ears correspond to sturdy kidneys, while thin ears reveal fragility. Ears properly aligned close to cheeks show correct positioning, whereas uneven ears suggest renal displacement.

The Yellow Emperor then inquired: Why do some people never fall ill and live out their natural lifespan, remaining unharmed by severe worries, fears, extreme cold or heat? While others who stay indoors constantly without facing frightful situations still inevitably fall ill?

Qibo responded: The five zang organs are where pathogenic factors lodge. Those with all small organs rarely fall ill but are prone to anxiety; those with all large organs act slowly and seldom worry; people with all high-positioned organs behave arrogantly; those with all low-positioned organs prefer subordinate positions; individuals with all sturdy organs resist illness; people with all fragile organs constantly suffer diseases; those with all properly aligned organs have harmonious dispositions and are well-liked.

This scripture embodies the TCM diagnostic principle of "assessing the interior by observing the exterior," inferring internal organ states through external manifestations. It also demonstrates how the physiological conditions of the five zang organs directly influence both health status and personality traits.

This dialogue records the discussion between the Yellow Emperor (Huangdi) and Qibo regarding the correspondence between the internal organs and external physical characteristics. Qibo elaborates on diagnostic methods for assessing visceral conditions through observing bodily features.

The Yellow Emperor inquired: "When a person's five zang organs are all misaligned, it indicates the presence of wicked thoughts and tendencies toward theft—such a person cannot be considered upright. I wish to understand the correspondences between the six fu organs and external manifestations."

Qibo replied:

"The lungs correspond to the large intestine, whose manifestations appear on the skin. The heart corresponds to the small intestine, manifesting in the blood vessels. The liver corresponds to the gallbladder, showing in the tendons. The spleen corresponds to the stomach, evident in the muscles. The kidneys correspond to the triple burner (Sanjiao) and bladder, displaying in skin texture and body hair."

When pressed for details, Qibo explained further:

Lung-skin correspondence: Those with thick skin have thick intestinal walls; thin skin indicates thin intestinal walls. Loose skin with abdominal distension suggests a large, elongated intestine, while tight skin indicates a narrow, short intestine. Smooth skin reflects straight intestinal pathways; skin adhering to muscles suggests intestinal nodules.

Heart-blood vessel correspondence: Thick skin correlates with thick vessel walls, which in turn indicates thick small intestine walls. Thin skin corresponds to thin vessel walls and thin intestinal walls. Loose skin shows dilated vessels and a large small intestine, whereas thin skin with fine vessels suggests a short small intestine. Twisted yang channel vessels on the body surface indicate nodules in the small intestine.

Spleen-muscle correspondence: Well-developed muscles indicate thick stomach walls; weak muscles suggest thin stomach walls. Small, feeble muscles reflect an unsubstantial stomach. Disproportionate muscles lead to stomach displacement, causing lower digestive obstruction. Flaccid muscles indicate loose stomach walls; smooth muscles suggest tense stomach walls. Granular muscles reflect stomach nodules that impair upper digestive function.

Liver-nail correspondence: Thick, yellowish nails indicate thick gallbladder walls; thin, reddish nails suggest thin walls. Hard, bluish nails show tense bile ducts; soft, red nails indicate relaxed ducts. Straight, white, unmarked nails reflect unobstructed bile flow, while deformed, dark, lined nails suggest bile duct nodules.

Kidney-bone correspondence: Fine, dense skin texture indicates thick triple burner and bladder walls; coarse, thin skin suggests thin walls. Loose skin texture reflects relaxed organs; tight, hairless skin shows organ tension. Thick, coarse body hair indicates unobstructed pathways, while sparse hair suggests nodules in these organs.

The Yellow Emperor concluded: "These variations in thickness and appearance all have external manifestations. I wish to understand what disorders they may cause." Qibo responded: "By observing external features, we can discern internal organ conditions and thereby diagnose diseases."

This passage explains ancient medical terminology for human skeletal structures. "Kāo" (尻) refers to the coccyx at the base of the spine; "qiāo" (骹) denotes the femur (thigh bone); "jié" (𩩲) indicates the ribs; and "yú" (骬) specifies the scapula (shoulder blade). These terms represent specialized anatomical designations used by ancient physicians.

The Yellow Emperor's Inner Canon: Spiritual Pivot (Huangdi Neijing: Lingshu), one of the four foundational classics of Chinese medicine, primarily discusses meridians, acupoints, and acupuncture therapies. This excerpt comes from its fourteenth chapter, documenting ancient physicians' meticulous observations and nomenclature of skeletal structures. Many of these bone names remain in use in modern TCM anatomy, such as "kāo bone" (coccyx) and "qiāo bone" (femur).