[Location] Localized in the erect sitting position or prostrate position, or in the lateral recumbent position. On the shoulder, directly above the nipple, at the midpoint of the line connecting GV14 (Dazhui) and the acromion. (Fig.52)
 
[Regional Anatomy] Skin→subcutaneous tissue→the trapezius→the levator scapulae. Superficial layer, the distribution of the supraclavicular nerve, the branches or the subordiantial ramus of the superficial carotid artery and vein; deep layer, the subordiantial ramus of the transverse carotid artery and vein and the branch of the dorsal scapular nerve.