Qian, front; gu, valley.
The depression in front of the 5th metacarpophalangeal joint is like a valley, and here the point is located.
When a loose fist is made, the point is on the ulnar side, distal to the 5th metacarpophelangeal joint, at the junction of the red and white skin.
Fever, headache, eyeache, lactation deficiency, numbness of the finger.
Perpendicularly 0.3-0.5 cun.