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The meridian of Hand-Taiyin (Hand-Taiyin Lung Meridian) originates from the Middle Jiao (Middle Burner, responsible for rotting and ripening food and water). It descends to connect with the Large Intestine (the Large Intestine is the support of the Lung, so the Lung meridian connects with it), returns along the upper opening of the Stomach (the gastric opening, also known as the贲门/Benmen), ascends through the Diaphragm, and belongs to the Lung (Hand-Taiyin is the entry point for the Lung, so its meridian ascends through the diaphragm to belong to the Lung). From the Lung system (tissues connected to the lung such as trachea and throat), it emerges horizontally from the axilla (the inside of the shoulder), descends along the medial aspect of the arm (between shoulder and elbow), running anterior to the Hand-Shaoyin Heart meridian and Hand-Jueyin Pericardium meridian (Shaoyin is posterior, Jueyin is middle, Taiyin runs anteriorly). It descends into the cubital fossa (location of Chize LU-5), follows the medial border of the forearm along the lower edge of the radius (the lower edge of the radial bone), enters the Cun Kou (pulse-taking position where Jingqu LU-7 is located), ascends to the Thenar eminence (the fleshy mound at the base of the thumb, shaped like a fish), follows the Yu Ji (edge of the thenar eminence, named after the acupoint Yuji LR-10, though here referring to the Lung meridian path), and exits at the tip of the thumb (location of Shaoshang LU-11). Its branch (as stated in *Zhen Jing*: branches that run transversely are collaterals; this is the collateral of Hand-Taiyin, diverging to Yangming, acupoint named Lieque LU-7) goes straight out from behind the wrist to the inner border of the index finger, exiting at its tip (Hand-Taiyin intersects with Hand-Yangming Large Intestine meridian here).

When the meridian undergoes pathological changes ("Shi Dong" diseases - Qi disorders): The Lung feels full, distended with wheezing and coughing (distension indicates stagnant Qi). Pain in the Que Pen (Clavicular fossa, named for its basin-like depression). Severe cases involve crossing both hands over the chest and experiencing visual blurring or dizziness (Ma). This is called Bi Jue (Arm Jue - Qi rebellion).

It governs diseases generated by the Lung organ: Cough, rebellious Qi, wheezing, irritability, chest fullness, pain along the anteromedial aspect of the arm, heat in the palm. In excess conditions: Shoulder and back pain, sweating, wind-stroke, frequent but scanty urination. In deficiency conditions: Shoulder and back pain, cold sensation, shortness of breath (insufficient respiration), change in urine color, sudden incontinence. Pulse diagnosis: Excess presents with Cun Kou pulse three times larger than Ren Ying; Deficiency presents with Cun Kou pulse smaller than Ren Ying. (Note on Cun Kou vs. Ren Ying: Various texts differ. Generally, Cun Kou/Qi Kou reflects Yin/Lung status, while Ren Ying reflects Yang/Stomach status. Normal state: both equal. Abnormal: disparity indicates disease. Specific patterns of excess/deficiency in Ren Ying/Cun Kou correlate to specific meridians and severity, leading to "Guan Ge" syndrome if extreme, which is fatal. Treatment principles involve tonifying and reducing based on these pulse differences. For Lung meridian excess: Reduce Hand-Taiyin, Tonify Hand-Yangming. For deficiency: Reduce Hand-Yangming, Tonify Hand-Taiyin.)

The collateral name is Lieque (LU-7), originating between the wrist bones, running parallel to the Taiyin meridian, entering the palm, and dispersing at the thenar eminence. Excess: Heat in the wrist and palm. Deficiency: Yawning, frequent urination or enuresis. Treat by needling half a cun from the wrist, diverging to Yangming.

The sinews of Hand-Taiyin originate from the thumb, ascend along the finger, converge behind the thenar eminence, run along the lateral side of Cun Kou, up the arm, converge at the elbow, ascend along the medial arm, enter the axilla, emerge at Que Pen, converge at the anterior shoulder and below Que Pen, converge in the chest, penetrate the diaphragm, and reach the hypochondrium. Pathology involves spasms and pain along the pathway; severe cases may result in Xi Ben (accumulation disorder), rib tightness, hemoptysis. Treatment uses burning needle therapy (Cao Zhen), targeting painful points as Shu points. Known as Zhong Dong Bi.

Lung disease symptoms: Wheezing, cough, rebellious Qi, shoulder/back pain, sweating, pain in the sacrum, groin, thigh, knee, hip, and foot. Deficiency: Shortness of breath, inability to take deep breaths, deafness, dry throat. Treatment: Select blood vessels from Taiyin, lateral Foot-Taiyang, and medial Jueyin meridians. Lung Heat disease: Initial chills, piloerection, aversion to wind/cold, yellow tongue coating, fever. Heat causes wheezing/cough, pain moving to chest/back, headache, sweating with chills. Worsens on Bing/Ding days, profuse sweating on Geng/Xin days. If Qi rebels, death occurs on Bing/Ding days. Treatment: Prick Hand-Taiyin and Hand-Yangming meridians to bleed (amount of soybean), immediate relief.

Hand-Taiyin Lung Meridian runs from abdomen to hand, length 3 chi 5 cun, total 7 chi for both sides. 22 Acupoints: Zhongfu (LU-1), Yunmen (LU-2), Tianfu (LU-3), Xiabai (LU-4), Chize (LU-5), Kongzui (LU-6), Lieque (LU-7), Jingqu (LU-8), Yuji (LU-10), Taiyuan (LU-9), Shaoshang (LU-11). [Note: Order in text varies slightly from standard numbering, listed as per source].