灵枢：卫气第五十二

Lingshu: Wei Qi (Defensive Qi) — Chapter 52

Overall Paraphrase

The Yellow Emperor said: The five viscera are the storehouses of essence, spirit, ethereal soul, and corporeal soul; the six bowels are the organs that receive grain and water, digest, and transmit. The qi transformed from grain and water enters inward into the five viscera and connects outward to the limbs and joints. Among it, that which floats externally and does not follow the channel pathways is called Wei Qi (Defensive Qi — qi that moves outside the vessels, governing defense and warming nourishment); that which is refined and pure and moves within the channels is called Ying Qi (Nutritive Qi — qi that moves inside the vessels, governing nourishment). Ying and Wei, yin and yang, accompany each other; internally and externally they interpenetrate, like a circular ring without beginning or end, continuous and unbroken — who can exhaust it? Nevertheless, they are divided into yin and yang, and each has its Biao-Ben (the Ben being the root, foundation, and origin; the Biao being the branch tip, manifestation, and response), deficiency and excess, and sites of separation and union. One who can distinguish the yin and yang of the twelve channels will know whence disease arises; one who examines the locations of deficiency and excess will grasp the high and low of the disease site; one who knows the six bowels' Qi Streets (pathways where channel qi converges and passes through) will understand how to untie stagnation and grasp the pivotal points at key portals; one who understands the firmness and weakness of deficiency and excess will know where supplementation and draining are applied; one who knows the Biao-Ben of the six channels can face all disease presentations without confusion.

Qi Bo said: The sage emperor's discourse is truly vast! Permit me to explain in detail. The Ben of the Foot-Taiyang Bladder Channel is located five cun above the heel; its Biao is at the two eyes, connecting to the Mingmen. What is called Mingmen (here referring to the eyes) is the two eyes. The Ben of the Foot-Shaoyang Gallbladder Channel is near the foot Qiaoyin point; its Biao is in front of the ear — what is called "Window Cage" is the ear. The Ben of the Foot-Shaoyin Kidney Channel is within the three cun range above and below the medial malleolus; its Biao is at the Kidney Shu point on the back and the two connecting vessels below the tongue. The Ben of the Foot-Jueyin Liver Channel is five cun above the Xingjian point; its Biao is at the Liver Shu point on the back. The Ben of the Foot-Yangming Stomach Channel is at the Lidui point; its Biao is at Renying, the cheek region, and flanking the Hang Sang (upper palate/throat). The Ben of the Foot-Taiyin Spleen Channel is four cun anterior and superior to Zhongfeng point; its Biao is at the Spleen Shu point on the back and the root of the tongue. The Ben of the Hand-Taiyang Small Intestine Channel is behind the prominent bone of the lateral wrist; its Biao is one cun above Mingmen (the eyes). The Ben of the Hand-Shaoyang Sanjiao Channel is two cun above the space between the small finger and ring finger; its Biao is at the upper corner behind the ear and the outer canthus of the eye. The Ben of the Hand-Yangming Large Intestine Channel is in the elbow bone, ascending to the Bieyang region; its Biao is at the cheek below the face. The Ben of the Hand-Taiyin Lung Channel is within the Cunkou; its Biao is at the pulsation of the artery on the inner side of the armpit. The Ben of the Hand-Shaoyin Heart Channel is at the tip of the prominent bone behind the palm; its Biao is at the Heart Shu point on the back. The Ben of the Hand-Jueyin Pericardium Channel is two cun between the two sinews behind the palm; its Biao is three cun below the armpit.

In general, when examining these Biao-Ben sites: if the lower part is deficient, there will be cold reversal; if the lower part is excessive, there will be fever; if the upper part is deficient, there will be dizziness; if the upper part is excessive, there will be heat pain. Therefore, for excess conditions, one uses methods of severing and stopping; for deficiency conditions, one uses methods of guiding and lifting.

Now regarding the Qi Streets: there is a Qi Street of the chest, a Qi Street of the abdomen, a Qi Street of the head, and a Qi Street of the lower leg. Therefore, qi in the head converges at the brain; qi in the chest converges at the chest and the back Shu points; qi in the abdomen converges at the back Shu points and the Chong Channel at the pulsating points beside the navel; qi in the lower leg converges at the Qichong point, Chengshan point, and below the ankle. When needling these sites with filiform needles, one must first press, and when qi responds to the hand beneath the fingers, then needle. According to ancient texts, the indications include: headache, dizziness with falling, abdominal pain with sudden fullness and distension, and newly formed accumulations. Painful mobile accumulations are easy to cure; accumulations without pain are difficult to cure. The "indications" above are the scope of acupuncture recorded in ancient texts and are provided solely for theoretical study — they do not constitute modern diagnostic or therapeutic advice.

🧠 Deep Understanding

Core Principles 💡

• Ying and Wei Share the Same Origin; Yin and Yang Accomcompany Each Other: Ying Qi moves within the vessels, Wei Qi moves outside the vessels. Both originate from the refined essence of grain and water, interpenetrate internally and externally, and circulate without cease, forming the basic model of qi and blood movement in the human body.
• The Biao-Ben System of the Twelve Channels: Each channel has its "Ben" and "Biao." The Biao is mostly located in the head, face, and torso; the Ben is mostly located at the distal ends of the limbs, particularly near the wrists and ankles. Through this, the ancients established the diagnostic approach of "distal assessment, upper-lower connection" in channel theory.
• The Qi Street Theory: The four great Qi Streets of the head, chest, abdomen, and lower leg are horizontal pathways where channel qi converges and passes regionally, complementing the vertical flow of the twelve channels. This reflects the network view of qi movement: "vertically there are channels; horizontally there are streets."
• Deficiency/Excess, Cold/Heat, and Supplementation/Draining Principles: By examining the Biao-Ben sites above and below, one assesses deficiency and excess. Lower deficiency manifests as cold reversal; lower excess as heat; upper deficiency as dizziness; upper excess as heat pain. The therapeutic principle is: "for excess, sever and stop it; for deficiency, guide and lift it," embodying the core principle of supplementing deficiency and draining excess.

Modern Perspectives 🌟

• The Qi-Transformation View of Ying and Wei: Ying Qi and Wei Qi can be regarded as the ancients' general conceptualization of circulatory, immune, nutritional, and thermoregulatory functions, but they cannot be corresponded one-to-one with modern physiological concepts.
• Biao-Ben and Distal Connections: The Biao-Ben system of the twelve channels emphasizes correspondences between distal limbs and the head/face/torso. These bear rough analogy to modern theories of nerve segments, fascial chains, and reflex zones, but the ancients' localization was vague, with possible transcription errors — they cannot be directly equated with modern anatomy.
• Qi Street Zoning: The head Qi Street (converging at the brain), chest Qi Street (at the chest and back), abdominal Qi Street (at the periumbilical arteries), and lower leg Qi Street (at the lower extremity) roughly correspond to regions modern medicine recognizes as dense neurovascular zones: the brain, cardiopulmonary area, abdominal aorta, and lower limb vessels/nerves. This carries some regional-functional value but remains an ancient empirical hypothesis.
• "Painful Mobile Conditions Are Easy to Cure; Painless Accumulations Are Difficult": This observation has intuitive consistency with the prognostic differences between mobile, active masses and fixed, painless masses, and has inspired later approaches to treating accumulations — but it cannot serve as a basis for modern diagnosis or prognosis.
• Acupuncture-related Content: The needle techniques and indications in this passage reflect only the ancients' therapeutic thinking. Actual practice must be performed by qualified professional practitioners; self-imitation is not permitted.

Wellness Insights ⚡

• Protect the Head Qi Street: The head Qi Street converges at the brain. In daily life, ensure adequate sleep, avoid staying up late and excessive emotional agitation, to reduce upper-body qi disturbances such as dizziness and head fullness.
• Free the Chest Qi Street: The chest Qi Street lies in the chest and upper back. Moderate chest-expanding exercises and deep-breathing practice help keep chest qi flowing freely, and avoid prolonged sitting with a hunched chest.
• Regulate the Abdominal Qi Street: The abdominal Qi Street relates to diet and the Chong Channel. Eat with moderation, avoid overeating, and keep the abdomen warm to benefit the qi dynamics of the spleen and stomach.
• Activate the Lower Leg Qi Street: The lower leg Qi Street is in the lower limbs. Walk moderately and keep the legs active, avoiding prolonged immobility, to promote qi and blood circulation. The above are general wellness suggestions and do not target any specific disease.

📚 Related Knowledge

• Related Concepts: Ying and Wei Qi, twelve channels, Biao-Ben, Qi Streets, Four Seas, Chong Channel, supplementing deficiency and draining excess, Shu points, Yuan points
• Further Reading: Lingshu · Ying Wei Sheng Hui, Lingshu · Hai Lun, Lingshu · Ben Shu, Suwen · Yin Yang Ying Xiang Da Lun, Nanjing · Liu Shi Er Nan

Bugu Note: 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 are unwell, please seek medical attention promptly.