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The heel (calcaneus) is stiff, and one may walk with the buttocks on the ground instead of using the heels, due to spasmodic contraction of the tendons in the feet; the spine is curved, and the head leans forward as if the back were replacing the head, due to the body being curled up. The Foot-Shaoyin Kidney Meridian originates below the little toe, enters the heel obliquely, ascends along the posterior medial aspect of the thigh, penetrates the spine, connects with the Kidney, and links with the Bladder. When Kidney Qi is deficient and pathogenic factors invade, the limbs cannot extend.

Pi Bi (Spleen Bi Syndrome) presents with flaccidity and weakness of the four limbs, coughing, vomiting of clear fluid, and severe obstruction in the upper jiao. The Spleen governs the four limbs; its meridian enters the abdomen, belongs to the Spleen, links with the Stomach, ascends through the diaphragm, and flanks the throat, thus causing cough and vomiting of clear fluid. The Spleen Qi nourishes the Lungs and Stomach and connects with the throat, leading to severe obstruction in the upper jiao.

Chang Bi (Intestinal Bi Syndrome) is characterized by frequent drinking but difficulty urinating, abdominal qi rushing and wheezing sounds, and occasional diarrhea with undigested food. The Large Intestine meridian links with the Lung, descends through the diaphragm, and belongs to the Large Intestine; the Small Intestine meridian links with the Heart, follows the throat, descends through the diaphragm, reaches the Stomach, and belongs to the Small Intestine. Now, with pathogenic factors in the Small Intestine, the meridian qi cannot descend through the diaphragm, so intestinal transformation and transportation fail, and Stomach Qi accumulates heat, leading to excessive thirst and inability to excrete fluids smoothly. The Yang Qi in the intestines and stomach rushes and contends with the pathogenic factors, causing occasional relief, but because intestinal Qi fails to transform properly, diarrhea with undigested food occurs.

Bao Bi (Bladder/Reproductive Organ Bi Syndrome) involves internal pain upon pressing the lower abdomen and Bladder area, feeling as if scalded by hot water, dysuria, and running clear nasal discharge from above. The Bladder is the reservoir of body fluids, and the Bao (uterus/reproductive organ) resides within it, located at the Guan Yuan point in the lower abdomen. When the Bao is invaded by Wind-Cold-Dampness, the Taiyang Meridian of the Bladder becomes stagnant and blocked, causing internal pain upon pressure, a sensation of scalding, and dysuria. Since urine flow is obstructed, the Taiyang Meridian qi cannot descend but instead rises to scorch the brain, resulting in clear nasal discharge.

Excessive sexual activity or abnormal Qi movement causing panting indicates Bi accumulation in the Lung; excessive worry indicates Bi accumulation in the Heart; enuresis indicates Bi accumulation in the Kidney; exhaustion indicates Bi accumulation in the Liver; muscle wasting indicates Bi accumulation in the Spleen. (Wang Bing’s commentary: "Yin Qi" refers to erratic Qi moving abnormally, entering each Zang organ according to its dominance to form Bi. However, this interpretation suggests internal injury rather than external invasion by Wind, Cold, and Dampness. The *Xuan Ming Wu Qi Lun* states: "Pathogens entering Yin cause Bi." Does "pathogen" here refer only to Yin Qi?)

If various Bi syndromes persist, they will gradually penetrate inward. If Wind is predominant, recovery is easier because the pathogen remains superficial in the skin. Some ask why some Bi cases result in death, some involve prolonged pain, and others resolve easily. The answer is: invasion into the Zang organs leads to death; lingering in sinews and bones causes prolonged pain; remaining in the skin allows for easy recovery. (Supplement: Invasion into Zang organs leads to loss of Shen [Spirit]; pain in sinews/bones persists due to fixed location; skin Bi resolves easily due to superficiality.)

Regarding pathogens lodging in the Six Fu organs, the root cause lies in improper diet and lifestyle. Although geographical conditions vary, affecting constitution and habits, overindulgence damages the Fu organs. As stated in the classics: "Cold and heat from food and drink harm the Six Fu organs when contracted." Each Fu organ has Back-Shu points; Wind, Cold, and Dampness attacking these points, combined with dietary impropriety, allow pathogens to enter along the meridians and lodge in their respective Fu organs. (Supplement: The Back-Shu points of the Six Fu organs are located on both sides of the corresponding vertebrae, where the Foot-Taiyang Bladder Meridian qi emerges.)

How should acupuncture treatment be applied? The Five Zang organs have Shu points, and the Six Fu organs have He-Sea points. Following the distribution of the meridians, treat according to the specific pathology, and the disease will heal. (Supplement: Liver Shu, Taichong; Heart Shu, Daling; Spleen Shu, Taibai; Lung Shu, Taiyuan; Kidney Shu, Taixi are all points where meridian Qi gathers. Stomach He-Sea is Zusanli; Gallbladder He-Sea is Yanglingquan; Large Intestine He-Sea is Quchi; Small Intestine He-Sea is Xiaohai; Sanjiao He-Sea is Tianjing; Bladder He-Sea is Weizhong. The term "Guo" refers to the pathway of the meridian.)

Do Ying Qi (Nutritive Qi) and Wei Qi (Defensive Qi) also cause Bi? Ying Qi is the refined essence of food and drink, harmonized among the Five Zang organs and distributed to the Six Fu organs before entering the vessels. (Supplement: According to *Zheng Li Lun*, grain enters the Stomach, meridians begin to flow, water transforms into essence, and blood forms. Correction: Grain enters the Stomach, Qi transmits to the Lung, the purest part ascends via the collaterals, so water-grain essence combines with Ying Qi to circulate in the vessels.) Thus, Ying Qi circulates up and down the vessels, penetrating the Five Zang and connecting the Six Fu. (Supplement: Ying Qi moves within the vessels, reaching everywhere.)

Wei Qi is the fierce Qi of food and drink; its nature is rapid and slippery, unable to enter the vessels. (Supplement: Fierce Qi refers to floating and vigorous Qi. Due to its floating nature, it is rapid and fierce, unable to enter the vessels.) Therefore, Wei Qi circulates between the skin and muscles, steams the Huang membrane (diaphragmatic fascia), and disperses in the chest and abdomen. (Supplement: Skin and muscles refer to areas outside the vessels. The Huang membrane refers to the fascia between the Zang organs. Being vigorous, it distributes to empty spaces in the chest and abdomen, steaming the Huang membrane to promote Qi circulation.) Violating Wei Qi causes illness; harmonizing it leads to recovery. Without combining with Wind, Cold, or Dampness, Bi does not form.

Why do some Bi syndromes hurt, while others do not? Why are some numb, cold, hot, dry, or damp? Pain is caused by excess Cold; Cold constricts and causes pain. (Supplement: Wind, Cold, and Dampness lodge between muscles, condensing into fluid droplets. Upon encountering Cold, they aggregate, pushing apart the muscles, causing tearing and pain.)

Non-painful numbness occurs when the disease is deep and chronic, Ying and Wei Qi flow is sluggish, and meridians are often empty. (Supplement: Non-pain and numbness are related; non-pain emphasizes severity.) Skin malnourishment leads to numbness. (Supplement: Skin becomes insensate.)

Cold sensations arise from deficiency of Yang Qi and excess of Yin Qi, which exacerbate each other. (Supplement: The disease originates from Wind-Cold-Dampness, increasing Yin.)

Heat sensations arise from excess Yang Qi and deficiency of Yin Qi, where pathogenic Yang encounters Yin, causing Bi-heat. (Supplement: "Encounter" implies interaction. If Yin cannot overcome Yang, heat results.)

Profuse sweating and wetness occur when Dampness is severe, Yang Qi is weak, and Yin Qi is strong, causing mutual induction and sweating. (Supplement: Interior and exterior correspond and induce each other.)

Why might Bi not hurt? If Bi affects bone, the body feels heavy; if in vessels, blood stagnates; if in sinews, flexion-extension is impaired; if in flesh, there is numbness; if in skin, there is cold. Possessing all five symptoms precludes pain. Generally, Bi worsens with Cold (causing spasm) and improves with Heat (causing relaxation). (From *Bi Lun*)

Emperor Wen asked: How do the Five Zang organs cause Wei syndrome (flaccidity)? Qi Bo answered: The Lung governs skin and hair; the Heart governs blood vessels; the Liver governs sinews and membranes; the Spleen governs muscles; the Kidney governs bone marrow. (Supplement: Different governance leads to different sites of Wei formation.)

Thus, Lung heat causing leaf-like desiccation leads to weak, thin skin and hair, resulting in Wei Bi (foot flaccidity). (Supplement: Lung heat transmits to the Kidney, causing leg spasms and inability to walk.)

Heart heat causes lower vessel Qi to rebel upward, depleting lower vessel Qi, leading to Mai Wei (vessel flaccidity), where joints break, calves relax, and standing is impossible. (Supplement: Heart fire flares up, reversing Kidney vessel flow. Yin rebels, fire burns internally, separating Yin and Yang. Heart governs vessels, causing Mai Wei. Kidney governs legs; joint failure leads to calf relaxation.)

Liver heat causes bitter taste from bile leakage, dry sinews, and tendon spasms, forming Jin Wei (sinew flaccidity). (Supplement: Liver heat causes bile secretion; Liver governs sinews, heat dries them, causing spasms.)

Spleen heat causes dry mouth/thirst from Stomach fluid leakage, muscle numbness, forming Rou Wei (flesh flaccidity). (Supplement: Spleen and Stomach are connected by membranes; Spleen heat dries Stomach fluids; Spleen governs muscles, heat causes numbness.)

Kidney heat causes inability to raise the waist/spine, dry bones, and reduced marrow, forming Gu Wei (bone flaccidity). (Supplement: Waist is the house of the Kidney; Kidney meridian runs through the spine. Heat prevents movement. Kidney governs marrow; heat dries bones and reduces marrow.)

How is this acquired? The Lung is the leader of the Zang organs and the canopy of the Heart. Emotional distress or unfulfilled desires cause Lung Qi stagnation and roaring sounds, leading to Lung heat and leaf-like desiccation. (Supplement: Lung houses Qi and emotion; stagnation causes noisy breathing and heat.) Thus, Zang Wei arises from Lung heat desiccation. (The Lung regulates Ying and Wei and balances Yin-Yang.)

Extreme grief severs the Bao Luo (pericardium collaterals), causing internal Yang agitation, heart bleeding, and frequent bloody urine. (Supplement: Grief tightens the Heart connection, raises Lung leaves, blocks upper Jiao, traps heat, severing Bao Luo and agitating Yang, causing bleeding. "Sou" means urination.) Thus, *Ben Bing* states: Major vessels become empty, causing Ji Bi (muscle Bi), transmitting to Mai Wei. (Supplement: *Ben Bing* is an ancient chapter. Hematuria empties vessels; vessel deficiency allows heat to press inward, Wei Qi becomes strong, Ying Qi weak, causing Ji Bi, which transmits to Mai Wei.)

Endless longing and unfulfilled desires, excessive sexual activity, cause Zong Jin (major sinews) to relax, leading to Jin Wei and Bai Yin (white discharge). (Supplement: Unfulfilled desires lead to sexual exertion, damaging sinews and essence. Bai Yin is white discharge resembling semen.) Thus, *Xia Jing* states: Jin Wei originates from the Liver and sexual indulgence. (Supplement: *Xia Jing* is an ancient text; "Shi Nei" means sexual exertion draining essence.)

Gradual exposure to dampness, living in wet areas, causes muscle rot and numbness, forming Rou Wei. (Supplement: Proximity to water/dampness harms the Spleen, which dislikes dampness. Dampness obstructs Wei Qi nourishment, causing Rou Wei.) Thus, *Xia Jing* states: Rou Wei comes from damp places. (Supplement: Dampness harms skin, muscle, sinews, and vessels, specifically muscles here.)

Long journeys, fatigue, extreme heat, and thirst cause Yang Qi to attack internally (devouring Yin Qi in the abdomen). Heat lodges in the Kidney (Water organ); if Water cannot control Fire, bones dry, marrow empties, and legs cannot support the body, forming Gu Wei. (Supplement: Heat lodges in the Kidney.) Thus, *Xia Jing* states: Gu Wei originates from extreme heat.

Differentiation: Lung heat shows pale complexion and brittle hair; Heart heat shows red complexion and overflowing collateral vessels; Liver heat shows dark complexion and brittle nails; Spleen heat shows yellow complexion and twitching muscles; Kidney heat shows black complexion and dry teeth.

Why treat Wei exclusively by regulating the Yangming? Yangming (Stomach) is the sea of the Five Zang and Six Fu organs. It moistens Zong Jin (major sinews), which bind bones and facilitate joint movement. (Supplement: Zong Jin refers to vertical tendons around the pubic bone and umbilicus, connecting to the chest, hips, and head. The waist is the major joint of the Kidney, governing flexion/extension, hence "Ji Guan".) The Chong Mai (Penetrating Vessel) is the sea of the twelve meridians, nourishing溪谷 (valleys/muscle spaces), merging with Yangming at Zong Jin. (Supplement: Chong Mai and Stomach meridian run parallel near the umbilicus, meeting at Zong Jin. Meat masses are "Gu", small masses are "Xi".) Yin and Yang converge at Zong Jin, meeting at Qi Chuan (groin pulse), with Yangming as the leader, connected to Dai Mai (Girdle Vessel) and Du Mai (Governor Vessel). (Supplement: Convergence at the pubic bone; Yangming supports externally, Chong Mai internally. Dai Mai circles the waist. This aligns with *Jue Lun*: "The anterior yin is the gathering of Zong Jin, combined by Taiyin and Yangming.") Thus, Yangming deficiency leads to Zong Jin laxity and Dai Mai failure to pull, causing foot flaccidity. (Supplement: "Yin" means traction.)

Treatment: Tonify Ying points, drain Shu points, regulate deficiency/excess, harmonize reversal/flow. Treat sinews, vessels, bones, and flesh according to their auspicious months. (Supplement: Auspicious months correspond to organ dominance, e.g., Liver in Jia/Yi days.)

Emperor Wen asked: What causes cold and heat in Jue syndrome? Qi Bo answered: Deficiency of Yang Qi below causes Han Jue (Cold Jue); deficiency of Yin Qi below causes Re Jue (Heat Jue). (Yang refers to Foot-Taiyang, Taiyang, Shaoyang; Yin refers to Foot-Taiyin, Shaoyin, Jueyin.)

Why does Re Jue heat start at the feet? Yang Qi originates at the lateral aspects of the five toes; Yin meridians gather at the sole. Excess Yang causes heat in the sole. (Supplement: Foot-Taiyang, Yangming, Shaoyang exit the toes; Foot-Jueyin, Taiyin, Shaoyin gather at the sole. Weak Yin allows heat.)

Why does Han Jue cold start at the toes and rise to the knees? Yin Qi originates at the medial aspects of the five toes, gathering below and above the knees. Excess Yin causes cold from toes to knees, originating internally. (Supplement: Foot-Taiyin, Shaoyin, Jueyin emerge medially, ascend thighs, enter abdomen.)

What error causes Han Jue? The anterior yin is the gathering of Zong Jin, combined by Taiyin and Yangming. (Supplement: Zong Jin connects to genitalia; Spleen and Stomach meridians support Zong Jin.) In Spring/Summer, Yang is abundant, Yin scarce; in Autumn/Winter, Yin is abundant, Yang scarce. A robust person who exhausts themselves sexually during Yin-dominant seasons causes lower Qi to struggle upward without replenishment, essence leaks downward, and pathogenic Qi rises. (Supplement: "Duo Yu Suo Yong" means excessive desire draining essence.) Qi stagnates internally, Yang Qi declines, failing to nourish meridians; Yang decreases daily, Yin remains alone, causing cold hands and feet. (Zhang Zihe notes: In autumn/winter, people indulge desires, draining internal Yang, allowing Yin to overflow and pathogenic Qi to rise, causing cold extremities.)

How does Re Jue occur? Wine enters the Stomach, filling collaterals but emptying main vessels. The Spleen transports fluids for the Stomach. Yin deficiency allows Yang to enter; Stomach disharmony leads to essence depletion, failing to nourish limbs. (Supplement: Stomach disharmony depletes essence; lack of internal essence leaves limbs starved.) Frequent drunkenness and post-coital activity cause Qi to accumulate in the Spleen, mixing wine and grain Qi, generating internal heat and red urine. Wine Qi is fierce; Kidney Qi declines daily; Yang dominates, causing hot hands and feet. (Supplement: Drunkenness/sex deplete essence, creating internal heat. Kidney declines, Yang dominates, causing heat.)

Why does Jue cause abdominal fullness or sudden unconsciousness? Excess Yin Qi above causes lower deficiency and abdominal fullness. (Note: "Yang Qi excess above" likely a textual error for "abdominal fullness"). Lower Qi presses upward, pathogenic Qi rebels, disturbing Yang Qi, causing unconsciousness. (Supplement: *Jia Yi Jing* mentions Yang sinking, Yin rising, causing "Shi Jue" (Corpse Jue). Zhang Zhongjing describes Shaoyin pulse absence, Kidney Qi weakness, and Qi rushing to chest/pericardium, causing numbness. *Miu Ci Lun* describes five collaterals converging at the ear/left temple, leading to corpse-like unconsciousness.)

Describe the Jue patterns of the six meridians:
Taiyang Jue: Head swelling, heaviness, inability to walk, collapse. (Foot-Taiyang starts at inner canthus, crosses vertex, descends back/thigh, calf, ankle, little toe. Rebellion causes these symptoms.)
Yangming Jue: Mania, running/crying, abdominal fullness, insomnia, red/hot face, hallucinations, delirium.
Shaoyang Jue: Sudden deafness, swollen/hot cheeks, flank pain, immobility.
Taiyin Jue: Abdominal fullness/distension, difficult defecation, anorexia, vomiting after eating, insomnia.
Shaoyin Jue: Dry mouth, red urine, abdominal fullness, heart pain.
Jueyin Jue: Lower abdominal swelling/pain, abdominal distension, difficult urination/stool, preference for lying with knees flexed, genital retraction/swelling, internal heat (or shin heat).

Excess: Drain. Deficiency: Tonify. Neither: Treat via the meridian itself. (Supplement: Use needle retention time based on meridian method.)

Taiyin Jue Ni: Spasms, heart pain radiating to abdomen. Treat the affected area.
Shaoyin Jue Ni: Empty fullness, vomiting, clear diarrhea. Treat the affected area.
Jueyin Jue Ni: Spasms, low back pain, empty fullness, urinary retention, delirium. Treat the affected area.
Three Yin Jue Ni: Inability to urinate/defecate, cold extremities, death in three days. (Three Yin exhausted.)
Taiyang Jue Ni: Rigidity, collapse, hematemesis, epistaxis. Treat the affected area.
Shaoyang Jue Ni: Joint dysfunction, inability to walk/turn neck, intestinal abscess (incurable), fright (fatal).
Yangming Jue Ni: Asthma/cough, fever, fright, epistaxis, hematemesis. Treat the affected area.
Hand-Taiyin Jue Ni: Empty fullness, cough, frothy vomiting. Treat the affected area.
Hand-Shaoyin/Jueyin Jue Ni: Heart pain radiating to throat, fever, fatal/incurable.
Hand-Taiyang Jue Ni: Deafness, weeping, inability to turn neck/walk. Treat the affected area. (Note: Hand-Taiyang does not connect to the waist; text may be corrupted.)
Hand-Yangming/Shaoyang Jue Ni: Throat bi, swollen throat. Treat the affected area. (From *Jue Lun*)

Sleeping outdoors exposed to wind causes blood coagulation in skin (Bi), vessels (Qi stagnation), or feet (Jue/Cold). These result from blood failing to return to its channels (large meridians). Hence Bi and Jue. (From *Wu Zang Sheng Cheng Lun*)

Emperor Wen asked: A patient has fever, sweating, irritability/fullness unrelieved by sweat. What is this? Qi Bo answered: Sweating with fever is Wind; sweating with persistent irritability/fullness is Jue. Named Feng Jue (Wind Jue). Taiyang governs exterior Qi and is first invaded; Shaoyin is its interior counterpart. Heat causes Shaoyin to follow Taiyang upward, causing Jue. (Supplement: Shaoyin follows Taiyang upward.) Treatment: Acupuncture exterior-interior pairs, administer decoctions. (Supplement: Drain Taiyang, tonify Shaoyin. Decoction stops rebellious Kidney Qi. From *Ping Re Lun*)

Emperor Wen asked: High fevers are types of Shang Han (Cold Damage). Some recover, some die within 6-7 days; survivors recover after 10+ days. Why? (Supplement: All seasonal pathogens cause disease, but Cold Damage is most toxic. Immediate illness is Shang Han; latent cold toxin transforms into Warm Disease before Summer Solstice...)