On the little finger dorsum, in the center of the transverse creases of the proximal interphalangeal joint (PIP).
How to locate
Slightly bend the PIP of the little finger. The point is located at the vertex of the flexed joint.
Zhongkui EX-UE-4 is on the center PIP of the middle finger dorsum.
Sifeng EX-UE-10 is a group of four points located on the palmar aspect of the PIP from the 2nd to the 5th finger.