Heart pain, palpitations, stomach pain, nausea, vomiting of blood, madness, convulsions, wrist joint pain, chest and rib pain, etc.

In the center of the wrist transverse crease, between the palmaris longus tendon and the flexor carpi radialis tendon. (This acupoint is bilateral, one on each side.)

Step 1: Extend the arm with the palm facing up and slightly bend the wrist to make a fist;
Step 2: On the inner side of the arm, you can palpate two distinct cord-like tendons (the palmaris longus tendon and the flexor carpi radialis tendon);
Step 3: At the midpoint of the wrist crease on the palm side, the depression between the two tendons is the location of this acupoint.