[Location] Localized in the erect sitting position or in the supinate position, with the palm upwards, on the palmaris of forearm, on the line connecting Quze ( PC 3 ) and Daling (PC 7 ), 4 cun below the transverse crease of the elbow. ( Fig. 104 )
 
[Regional Anatomy] Skin→subcutaneous tissue→between flexor carpi radialis muscle tendon and long palmar muscle tendon→superficial flexor muscle of fingers→deep flexor muscle of fingers→membrana interossea antibrachii. Superficial layer, the distribution of cutaneous antebrachii lateralis nerve, the branch of cutaneous antebrachii medialis nerve, and median antebrachial vein; deep layer, the distribution of median nerve, and the concomitant artery and vein, anterior interosseous artery and nerve.