Deep insertion carries a risk of puncturing the lung (causing pneumothorax) or injuring the great cervical vessels.
📍 Location (classical)
At the base of the neck, directly below ST-9, at the superior border of the clavicle, in the depression between the sternal and clavicular heads of the SCM muscle.
🧭 How to find it (practical)
Seated, with the head erect, locate the point immediately inferior to Ren Ying (ST-9), at the upper margin of the proximal end of the clavicle, 1.5 cun lateral to Tian Tu (CV-22).
🔬 Anatomy
Between the heads of the SCM. The apex of the lung, the common carotid artery, and the internal jugular vein lie deep.
💉 Needling
Perpendicular insertion 0.3–0.5 cun.
📜 Etymology
Qi (气), air; She (舍), abode. Qi refers to the vital energy of Fei (Lung) and Wei (Stomach).
