手少阴，九穴成，极泉青灵少海深，自灵道通里而达，过阴 神门而迎，抵于少府，少冲可寻。
少阴心起极泉中，腋下筋间脉入胸，青灵肘上三寸取，少海肘后五分容，灵道掌后一寸半，通里腕后一寸
同，阴 腕后方半寸，神门掌后锐骨隆，少府节后劳宫直，小指内侧取少冲。
嗌干，脉上行挟嗌也。心痛，本脏之腑。其余心痛，皆包络痛也。渴而欲饮，心火内炎也。目黄，脉系目
系也。胁痛，脉出腋下也。 臂后廉痛，脉循 臂后廉也。掌中热痛，脉入掌内也。
心为五脏之主，邪不能干，除真心痛外，所载皆经络中病。此下即有本病，亦包络之病，非本脏病也。况
经络相连，病证多同，故《内经》虽各详经络，而本草所载，两经合一。今遵《内经》，仍各分一经。至于标
本用药，俱载包络经中，心经不必另载。
（是经起于少泽穴，终于听宫穴。）
小肠手太阳之脉，起于小指之端，循手外侧上腕，出踝中，直上循臂骨下廉，出肘内侧两筋之间，上循
外后廉，出肩解，绕肩胛，交肩上，入缺盆，络心，循咽下膈，抵胃属小肠。其支者，从缺盆循颈上颊，至目
锐，却入耳中。其支者，别颊上 抵鼻，至目内 ，斜络于颧。是动则病嗌痛颔肿，不可以顾，肩似拔，
似折。是主液所生病者，耳聋目黄颊肿，颈、颔、肩、 、肘、臂外后廉痛。为此诸病，盛则泻之，虚则补之，
热则疾之，寒则留之，陷下则灸之，不盛不虚，以经取之。盛者人迎大再倍于寸口，虚者人迎反小于寸口也。
The Hand-Shaoyin (Heart) Meridian consists of nine acupoints: Jiquan (HT1), Qingling (HT2), and Shaohai (HT3) are located deeply. Passing through Lingdao (HT4) and Tongli (HT5) to reach Yinxie (HT6), then passing through Shenmen (HT7), arriving at Shaofu (HT8), and finally one can locate Shaochong (HT9).
The Hand-Shaoyin Heart Meridian originates at Jiquan (HT1), located between the tendons in the axilla, with its vessels entering the chest; Qingling (HT2) is taken three cun above the elbow; Shaohai (HT3) is contained five fen behind the elbow; Lingdao (HT4) is one and a half cun distal to the palmar crease; Tongli (HT5) is one cun distal to the wrist; Yinxie (HT6) is half a cun distal to the wrist; Shenmen (HT7) is at the prominence of the sharp bone (pisiform) distal to the palm; Shaofu (HT8) is directly opposite Laogong (PC8) between the fourth and fifth metacarpal bones; Shaochong (HT9) is taken on the medial side of the little finger tip.
Dryness of the throat occurs because the meridian ascends flanking the throat. Heart pain is a disease of the Zang-Fu organ itself. Other heart pains are all pains of the Pericardium (Pericardium Meridian). Thirst with desire to drink indicates internal blazing of Heart Fire. Yellowing of the eyes occurs because the meridian connects to the eye system. Hypochondriac pain occurs because the meridian emerges from the axilla. Pain along the posterior aspect of the arm occurs because the meridian follows the posterior aspect of the arm. Heat and pain in the center of the palm occur because the meridian enters the palm.
The Heart is the master of the Five Zang organs, so pathogenic factors cannot invade it. Except for True Heart Pain, all recorded conditions are diseases within the meridians. Even if there are diseases of the primary organ below, they are diseases of the Pericardium, not the Heart itself. Moreover, since the meridians are connected, the clinical manifestations are often similar. Therefore, although the *Neijing* details each meridian separately, the materia medica combines these two meridians into one. Now following the *Neijing*, we still distinguish each meridian separately. As for treatment based on root and branch, medications are recorded in the Pericardium Meridian section, and there is no need to record them separately for the Heart Meridian.
(This meridian starts at Shaose (SI1) and ends at Tinggong (SI19).)
The Hand-Taiyang Small Intestine Meridian originates at the tip of the little finger, runs along the lateral side of the hand up to the wrist, emerges at the ankle region, goes straight up along the lower border of the ulna, emerges between the two tendons on the medial side of the elbow, ascends along the posterolateral border, emerges from the shoulder joint, winds around the scapula, intersects at the shoulders, enters the supraclavicular fossa (Quepen), connects with the Heart, follows the pharynx, descends through the diaphragm, reaches the Stomach, and belongs to the Small Intestine. Its branch arises from the supraclavicular fossa, ascends along the neck to the cheek, reaches the outer canthus of the eye, and re-enters the ear. Another branch separates from the cheek, ascends to the nasolabial area, reaches the inner canthus of the eye, and obliquely connects with the zygomatic region. When the meridian is disturbed, it causes sore throat and submandibular swelling, inability to turn the head, shoulder pain as if being pulled out, and elbow/arm pain as if broken. This meridian governs diseases generated by fluid metabolism, including deafness, yellowing of the eyes, cheek swelling, and pain along the posterolateral aspect of the neck, submandible, shoulder, elbow, and arm. For these various diseases, excess patterns are treated with draining methods, deficiency patterns with tonifying methods, heat patterns with rapid needle manipulation, cold patterns with retained needle manipulation, sinking/depressed conditions with moxibustion, and neither-excess-nor-deficiency patterns are treated by selecting points from the affected meridian. Excess patterns present with the Renying pulse (ST9) beating twice as large as the Cunkou pulse (Radial artery); deficiency patterns present with the Renying pulse beating smaller than the Cunkou pulse.