Chong, important place; yang, Yang of Yin-Yang.
The point is where the Chongyang Pulse is located (arteria dorsalis pedis).
Below Jiexi, in the depression between 2nd and 3rd metatarsal bones and the cuneiform.
Facial paralysis, toothache, headache, paralysis of the lower limbs, pain in the instep.
Perpendicularly 0.3-0.5cun, avoid the artery.