Loading...
Chapter 29 of 78
黄帝内经·素问
Holistic Paraphrase
The Yellow Emperor asked: The Foot-Taiyin Spleen Channel and Foot-Yangming Stomach Channel are internally-externally paired, both belonging to the spleen-stomach system's channels—yet their manifestations when diseased are not the same. Why is this?
Qibo replied: Taiyin pertains to yin, Yangming pertains to yang. The two differ in yin-yang nature, occupy different positions, manifest different vacuity and repletion changes in the course of disease, and the direction of pathogen transmission may be with or against the flow. Some diseases arise from the interior (viscera and bowels), while others invade from the exterior (skin and surface). The routes of origin differ, so the disease names and symptoms also differ accordingly.
The Yellow Emperor said: I wish to hear about their different symptomatic presentations.
Qibo said: Yang emulates the characteristics of Heaven and governs the exterior of the body (skin, surface, and six bowels); yin emulates the characteristics of Earth and governs the interior (internal organs, five viscera). Thus, the pattern of yang tends toward fullness and firmness, while the pattern of yin tends toward inward guarding and weakness. Therefore, when external thief-wind and vacuity-pathogen (external pathogens such as wind that take advantage of deficiency) attack the body, the yang aspect of the body surface is affected first; when harm is caused by dietary indiscretion and irregular daily routine, the yin aspect of the internal viscera and bowels falls ill first. When the yang aspect is affected by pathogens, they transmit into the six bowels (gallbladder, stomach, large intestine, small intestine, urinary bladder, and triple burner); when the yin aspect is affected, pathogens transmit into the five viscera (heart, liver, spleen, lungs, and kidneys). When pathogens enter the six bowels, there will be fever in the body, inability to sleep peacefully, and upward presentation as panting and rapid breathing; when pathogens enter the five viscera, there will be abdominal fullness and distention, blockage and obstruction, with downward presentation as sunsie (diarrhea with undigested food), which over time develops into changpi (dysentery with pus and blood in the stool). Thus, the throat governs the breathing of Heavenly qi, and the pharynx governs the swallowing of Earthly qi (water and grain). Therefore, the yang aspect is easily harmed by wind pathogen, and the yin aspect is easily harmed by dampness pathogen. Yin qi (channel qi) ascends from the feet to the head, then descends along the arms to the fingertips; yang qi ascends from the hands to the head, then descends to the feet. Therefore it is said: In diseases of the yang aspect, the condition first develops upward to its extreme and then turns downward; in diseases of the yin aspect, the condition first develops downward to its extreme and then turns upward. Thus, when harmed by wind pathogen, the upper body is affected first; when harmed by dampness pathogen, the lower body is affected first.
The Yellow Emperor asked: When the spleen is diseased and the four limbs cannot move normally, what is the reason?
Qibo said: All four limbs rely on the essence qi of water and grain that the stomach receives and stores for nourishment, but the stomach's essence qi cannot reach the channels of the four limbs directly—it must pass through the spleen's transformation and transportation. Only then can the four limbs receive nourishment. Now, when the spleen is diseased, it cannot transport and distribute fluids and essence on behalf of the stomach, and the four limbs cannot obtain the nourishment of water and grain essence. As essence qi daily declines, the channels and vessels no longer flow smoothly, and the sinews, bones, and flesh all fail to receive the moistening nurture of essence qi—so the four limbs lose their function and cannot move normally.
The Yellow Emperor asked: The spleen does not exclusively govern a single season—what is the principle behind this?
Qibo said: The spleen corresponds to Earth in the five phases, resides in the center, and among the four seasons separately prospers during the time governed by the four viscera—in the last eighteen days of each season it exercises temporary governance (i.e., the final eighteen days of each season are governed by the spleen). Therefore, the spleen does not exclusively govern a single season. The spleen's function is to continuously carry and distribute the essence of water and grain from the stomach. The characteristic of Earth is to grow, transform, and nurture all things, emulating the virtue of Heaven and Earth. Therefore, its function extends from above to below, from head to feet, reaching everywhere without exception—hence it is not confined to any particular season.
The Yellow Emperor asked: The spleen and stomach are merely connected by a single membrane. Why can the spleen transport fluids on behalf of the stomach?
Qibo said: The Foot-Taiyin Spleen Channel is one of the three yin channels. Its channel thread penetrates the stomach, connects with the spleen, and ascends to bind with the throat. Therefore, the Taiyin Spleen Channel can transport essence qi from the stomach to the three yin channels. The Foot-Yangming Stomach Channel is the exterior of Taiyin, serving as the "great sea" of nourishment for the five viscera and six bowels—it likewise can transport essence qi to the three yang channels. Each of the five viscera and six bowels receives essence qi from the Yangming Stomach Channel through its own channel. Therefore, the spleen can transport fluids for the stomach. If the four limbs do not receive the nourishment of water and grain essence, they daily grow weaker and diminished, the channels and vessels no longer flow smoothly, and the sinews, bones, and muscles all lack essence qi to nourish and grow—the four limbs will lose their normal function.
The core of this chapter lies in revealing the physiological and pathological relationship between the spleen and stomach as yin-yang, interior-exterior, with division of labor, and it puts forward three key propositions:
Yin and yang occupy different positions; pathogens affect them differently: Yang governs the exterior, yin governs the interior. External pathogens (wind) first harm the yang aspect → enter the six bowels → predominantly repletion patterns (fever, panting); internal injury (dietary indiscretion, irregular daily routine) first harms the yin aspect → enters the five viscera → vacuity patterns or internal obstruction (distention and fullness, sunsie). This establishes the diagnostic framework of "external contraction is attributed to yang; internal injury is attributed to yin."
The spleen acts on behalf of the stomach in transporting its fluids: The stomach is responsible for receiving and ripening water and grain, but the essential substances must rely on the spleen's transportation to reach the four limbs and viscera. When the spleen is diseased, the four limbs become nonfunctional—this is the most direct elaboration of the theories that "the spleen governs the four limbs" and "the spleen governs the flesh": whether the four limbs function normally depends on the spleen's ability to transport and transform water and grain essence, not on the stomach itself.
The spleen does not govern a single season but prospers across all four seasons: The spleen corresponds to Earth in the five phases and resides in the center. It does not correspond exclusively to one season but governs the last eighteen days of each season (totaling seventy-two days throughout the year), embodying the idea that "Earth gives birth to all things and emulates Heaven and Earth." The spleen's function runs through the four seasons, functioning at all times.
"The spleen transports fluids for the stomach" and digestion/absorption: What Chinese medicine calls "spleen governing transportation and transformation" corresponds from a modern perspective approximately to the digestive system's functions of digesting, absorbing, and transporting nutrients. The stomach's receiving corresponds to preliminary storage and mechanical/chemical digestion of food, while absorption in the small intestine, metabolism in the liver, and transport via the blood bear functional analogies to "the spleen distributing essential substances." The ancients stated that "if the four limbs do not receive the qi of water and grain, they will not function"—this objectively describes the phenomenon of muscle atrophy and weakness, and loss of limb function due to nutritional deficiency or metabolic disorders, which bears resemblance to malnutrition-related muscle weakness and metabolic myopathies in modern medicine.
"Yin receives dampness; the lower body is affected first" and clinical observation: The idea that dampness pathogen tends to harm the lower body and the yin aspect shows some consistency with modern observations that humid environments more readily trigger lower-body conditions involving joints and muscles. However, "dampness pathogen" as a concept of external disease cause belongs to the framework of Chinese medical theory and does not correspond to pathogens as understood in modern medicine.
Philosophical basis of "the spleen does not govern a season": This theory primarily reflects the philosophical concept of "Earth residing at the center" in five-phase doctrine. Its value lies in emphasizing that the spleen-stomach function is a continuous foundational function, not something important only in a particular season. Modern medicine likewise holds that the digestive system's function is a nonstop basal metabolic activity throughout the year—in this sense, there is some reason to it. However, interpreting "governance during the final eighteen days of each season" as a strict calendrical arrangement belongs to the ancient correlative thinking between Heaven and humanity and should not be judged by modern standards.
Limitations: The generalization of "the way of yang is repletion; the way of yin is vacuity" had guiding significance in ancient pattern discrimination, but clinically repletion and vacuity are often intermingled and should not be mechanically applied. The ancients systematized the transmission laws of diseases moving from yang into the bowels and from yin into the viscera as theoretical models; this does not mean every case strictly follows this path.
Related Concepts:
Further Reading:
This content is based on classical Chinese medicine texts and is provided solely for traditional cultural study and research. It does not constitute any medical diagnosis, medication, or treatment advice. If you feel unwell, please seek medical attention promptly.