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The *Huangdi Neijing* (Yellow Emperor's Inner Canon) states: "The Large Intestine is the official of transmission, where changes occur." It also says: The Large Intestine is called the white intestine.

The acupoints of the Hand-Yangming Meridian begin at Shangyang (LI1), followed by Erjian (LI2), Sanjian (LI3), and Hegu (LI4); Yangxi (LI5), Pianli (LI6), and Wenliu (LI7) extend in sequence; Xiaolian (LI8), Shanglian (LI9), and Shousanli (LI10); Quchi (LI11), Zhouliao (LI12), and Wuli (LI13) are near the elbow; Binao (LI14), Jianyu (LI15), and Jugu (LI16) correspond to the shoulder; Tianding (LI17), Futu (LI18), and Heliao (LI19) connect, while Yingxiang (LI20) is located five fen lateral to the nose (on both sides). This meridian starts at Shangyang (LI1) and ends at Yingxiang (LI20). Selecting Shangyang (LI1), Erjian (LI2), Sanjian (LI3), Hegu (LI4), Yangxi (LI5), and Quchi (LI11) corresponds to the Jing-River-Shu-Source-Jing point theory. The meridian originates at the tip of the index finger, follows the radial aspect of the finger, emerges between the two bones at Hegu (LI4), ascends into the space between the two tendons, follows the radial aspect of the forearm, enters the lateral aspect of the elbow, follows the anterior aspect of the lateral upper arm, passes over the shoulder, emerges anterior to the clavicle, ascends to meet at the cervical vertebrae, descends into the Supraclavicular Fossa (Quepen), connects with the Lung, passes through the diaphragm, and belongs to the Large Intestine; its branch ascends from the Supraclavicular Fossa to the neck, penetrates the cheek, enters the lower teeth, returns to exit beside the mouth, crosses at the Philtrum (Renzhong)──left crossing to right, right crossing to left──ascends beside the nostril, follows Heliao (LI19), and terminates at Yingxiang (LI20), thereby connecting with the Foot-Yangming Stomach Meridian. This meridian is abundant in Qi and Blood; during the Mao hour (5-7 AM), Qi and Blood flow into it, receiving the connection from the Hand-Taiyin Lung Meridian.

The Large Intestine is the Fu organ of Geng Metal; its pulse is detailed at the Right Cun position. In excess patterns, the pulse is excess; heat injury causes intestinal fullness and obstruction, which can be drained with Acrid-Warm methods. In deficiency patterns, the pulse is deficient; cold damage causes borborygmus, diarrhea, and pain, which must be tonified with Sour-Cool methods. Steamed Coptidis Rhizoma (Huanglian) resolves alcohol toxicity; stir-fried Magnoliae Officinalis Cortex (Houpo) stops hematochezia. For wind-intestinal bleeding, Chuanwu and Schizonepeta are excellent; for internal toxin hemorrhage, Polyporus and Scutellaria are miraculous. For dysentery, Liushen Wan is used; if regulation is suitable, regulate it; for leukorrhea, Baizhong San is used; if stopping is possible, stop it. To moisten the intestines and relieve constipation, Maren Wan indeed has miraculous effects; to promote stagnation and push hardness, Liumo Tang surely possesses unique merits. For hemorrhoid heat and pain, grind Musk and Bear Gallbladder Stone into snail flesh; or apply Bear Bile and Ice Plant powder mixed with well water. For dysentery abdominal pain, decoct ginger tea for treatment as recorded by Su Dongpo; the Plum-Honey Drink is documented in ancestral texts. For intestinal abscesses, return-of-the-soul Decoction (Fanhun Tang) is modified appropriately; Shixuan San is adjusted moderately. I have heard that eating stones and drinking water can serve as a meal to fill the stomach; consuming pine nuts and cypress seeds also forms a method to clear the Fu organs. Therefore, those seeking to alleviate hunger do not rely on delicacies; those regulating the intestines need no exotic techniques. If one can thoroughly understand Yin and Yang within acupuncture, one will naturally achieve extraordinary efficacy.