On the dorsum of the foot, in the depression formed by the junction of the 2nd and 3rd metatarsal bones with the cuneiform bones, 1.5 cun distal to ST-41, where the dorsalis pedis artery pulsates.
🧭 How to find it (practical)
Supine or seated, locate the point on the dorsum of the foot, 3 cun from Xian Gu (ST-43), where the pulse of the dorsalis pedis artery is palpable.
🔬 Anatomy
Extensor digitorum brevis muscle. Innervated by the deep fibular nerve. Dorsalis pedis artery.
💉 Needling
Perpendicular insertion 0.3–0.5 cun.
📜 Etymology
Chong (冲), surging; Yang (阳), the Yang of Yin-Yang. The point lies where the dorsalis pedis artery is most prominent.
