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The Hand-Taiyang Small Intestine Meridian originates at the ulnar end of the little finger (Shaoze, SI 1), follows the ulnar border of the hand (above Qiangu, SI 2 before the metacarpophalangeal joint; Houxi, SI 3 after the metacarpophalangeal joint), ascends to the wrist (Wangu, SI 4 anterior to the wrist; Yanggu, SI 5 in the center of the wrist), emerges from the styloid process region, travels straight up along the ulnar border of the forearm bone, emerges between the two bones on the medial side of the elbow (Xiaohai, SI 8), ascends along the posterior lateral border of the humerus, emerges from the shoulder joint cleft, winds around the scapula, intersects at the shoulders, enters the supraclavicular fossa (Quepen), descends to connect with the Heart, follows the esophagus, passes through the diaphragm, reaches the Stomach, and belongs to the Small Intestine. Its branch arises from the supraclavicular fossa, penetrates the neck, ascends to the cheek, reaches the outer canthus, and enters the ear; another branch diverges from the cheek, ascends to the nasal area, reaches the inner canthus, and obliquely connects with the zygomatic bone (the zygoma is the cheekbone; from here it intersects with the Foot-Taiyang Bladder Meridian).

When pathological changes occur in this meridian, symptoms include sore throat, swelling of the mandible, inability to turn the head back, a sensation as if the shoulder is being pulled out, and a sensation as if the elbow is broken. This meridian primarily governs diseases related to body fluids, such as deafness, yellowing of the eyes, swelling of the cheeks and mandible, and pain along the posterior lateral aspect of the neck, shoulder, elbow, and arm. In excess conditions, the Renying pulse (carotid artery) beats twice as strongly as the Cunkou pulse (radial artery); in deficiency conditions, the Renying pulse beats weaker than the Cunkou pulse. (From *Ling Shu*) ○ At Wei hour (1:00 PM - 3:00 PM), qi and blood flow from Shaochong (PC 9) and intersect with Shaoze (SI 1), traveling up the elbow to terminate at Tinggong (SI 19). (From *Ru Men*)

Shaoze (SI 1): Two acupoints, also known as Shaoji. Located at the ulnar end of the little finger, approximately the width of a leek leaf below the corner of the nail bed. It is the Jing-Well point of the Hand-Taiyang Small Intestine Meridian, where the meridian qi exits. Needle depth: 1 fen; retain needle for 2 breaths; moxibustion: 1 cone. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Qiangu (SI 2): Two acupoints. Located in the depression anterior to the metacarpophalangeal joint on the ulnar side of the little finger. It is the Ying-Spring point of the Hand-Taiyang Small Intestine Meridian, where the meridian qi flows. Needle depth: 1 fen; retain needle for 3 breaths; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Houxi (SI 3): Two acupoints. Located in the depression posterior to the metacarpophalangeal joint on the ulnar side of the little finger. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Acupoint location method: Make a fist, locate the tip of the transverse crease at the posterior aspect of the metacarpophalangeal joint. (From *Zhen Jiu Ru Men*) ○ It is the Shu-Stream point of the Hand-Taiyang Small Intestine Meridian, where the meridian qi pours. Needle depth: 2 fen; retain needle for 3 breaths; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Wangu (SI 4): Two acupoints. Located on the ulnar side of the hand, in the depression below the base of the first metacarpal bone anterior to the wrist (the junction of the palm and forearm is called "Wan"). (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Located in the depression below the high bone on the posterolateral aspect of the wrist; make a fist and take the point medially. (From *Zhen Jiu Ru Men*) ○ Anterior to the Wangu acupoint on the ulnar side of the hand. (From *Ling Shu*) ○ It is the Yuan-Source point of the Hand-Taiyang Small Intestine Meridian, where the meridian qi passes. Needle depth: 2 fen; retain needle for 3 breaths; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Yanggu (SI 5): Two acupoints. Located in the depression below the styloid process of the ulna in the center of the wrist on the ulnar side. It is the Jing-River point of the Hand-Taiyang Small Intestine Meridian, where the meridian qi travels. Needle depth: 2 fen; retain needle for 3 breaths; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Yanglao (SI 6): Two acupoints. Located in a depression above the styloid process of the ulna, one cun posterior to the wrist. Needle depth: 3 fen; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Zhizheng (SI 7): Two acupoints. Located five cun posterior to the Wangu acupoint. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Located in the depression five cun posterior to the wrist, four cun distal to Yanglao. (From *Zi Sheng Jing*) ○ It is the Luo-Connecting point of the Hand-Taiyang Small Intestine Meridian, diverging to connect with the Hand-Shaoyin Heart Meridian. Needle depth: 3 fen; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Xiaohai (SI 8): Two acupoints. Located in the depression lateral to the medial epicondyle of the humerus (large bone on the medial side of the elbow), five fen from the end of the elbow. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Locate by flexing the hand towards the head; alternatively, locate by flexing the elbow. (From *Zhen Jiu Ru Men*) ○ It is the He-Sea point of the Hand-Taiyang Small Intestine Meridian, where the meridian qi enters. Needle depth: 2 fen; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Jianzhen (SI 9): Two acupoints. Located in the depression posterior to the shoulder joint, between the two bones at the upper edge of the scapula. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Located in the gap between the two bones posterior to Jianyu (LI 15). (From *Zhen Jiu Ru Men*) ○ Needle depth: 8 fen; moxibustion is prohibited. (From *Zhen Jiu Ru Men*)

Naoshu (SI 10): Two acupoints. Located in the depression below the large bone posterior to Jianyu (LI 15) and at the upper margin of the scapula; locate by raising the arm. Needle depth: 8 fen; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Tianzong (SI 11): Two acupoints. Located in the depression below the large bone posterior to Bingfeng (SI 12). Needle depth: 5 fen; retain needle for 6 breaths; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Bingfeng (SI 12): Two acupoints. Located on the shoulder, posterior to the small bone lateral to Tianchuang (SI 16); an empty space appears when the arm is raised. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Anterior to Tianzong (SI 11), posterior to the small bone. (From *Zhen Jiu Ru Men*) ○ Needle depth: 5 fen; moxibustion: 5 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Quyuan (SI 13): Two acupoints. Located in the depression in the center of the shoulder, within the curve of the scapula; tenderness or pain upon pressure. Needle depth: 5 fen; moxibustion: 10 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Jianwaiyu (SI 14): Two acupoints. Located in the depression at the upper margin of the scapula, three cun lateral to the spine. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Three cun lateral to Dazhu (BL 11). (From *Zhen Jiu Ru Men*) ○ Needle depth: 6 fen; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Jianzhongyu (SI 15): Two acupoints. Located in the depression at the medial margin of the scapula, two cun lateral to the spine. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Two cun lateral to Dazhu (BL 11). (From *Zhen Jiu Ru Men*) ○ Needle depth: 3 fen; retain needle for 7 breaths; moxibustion: 10 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ The twelve acupoints on the posterior lateral aspect of the shoulder are: Jianzhen, Jiquan, Waiguan, Tianzong, Quyuan, Cici, Waiyu, Zhongyu, Jili. (From *Gang Mu*)

Tianrong (SI 17): Two acupoints. Located posterior to the angular process of the mandible, below the ear. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Located in the depression posterior to Jiache (ST 6). (From *Zhen Jiu Ru Men*) ○ Needle depth: 1 cun; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Tianchuang (SI 16): Two acupoints, also known as Chuanglong. Located in the depression where the arterial pulse is palpable, anterior to the sternocleidomastoid muscle (major tendon of the neck), below the angular process of the mandible, and posterior to Futu (LI 18). (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Located in the depression of the arterial pulse on the major tendon of the neck, below the hairline and below Wan Gu (GB 12). (From *Zhen Jiu Ru Men*) ○ Needle depth: 3 fen; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Quanliao (SI 18): Two acupoints. Located in the depression at the lower border of the zygomatic bone, at the sharp bony end. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Located in the depression at the lower border of the sharp bone on the cheek. (From *Zhen Jiu Ru Men*) ○ Needle depth: 3 fen; moxibustion is prohibited. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)

Tinggong (SI 19): Two acupoints. Located in the ear, beside the cartilaginous prominence, approximately the size of a red bean. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*) ○ Located beside the cartilaginous prominence anterior to the ear. (From *Zhen Jiu Ru Men*) ○ Needle depth: 3 fen; moxibustion: 3 cones. (From *Tong Ren Shu Xue Zhen Jiu Tu Jing*)