Five tiger four

With the palm facing upward [supine], points are 5 fen to the outer [radial] side of the center of the first phalanx of the thumb. One point every two fen, upwards [distal] from the horizontal line of the metacarpus to the horizontal line of flexion of the second phalanx, 5 points in total. That is why the point is called Wǔ Hǔ 五虎, five tiger.