Sifeng sì fèng · 四缝

Location. On the palm, at the centre of the transverse crease of the proximal interphalangeal joint of each of the four fingers - the index, middle, ring and little finger; four points on each hand, eight in all.

The name refers to the four creases. The points are recorded as a group on the fingers, and classical practice used pricking here rather than ordinary needle insertion. The thumb is not included in the group.