Motion sickness, headache, bloodshot eyes, upper abdominal pain, menstrual pain, diarrhea, heart pain, palpitations, stomachache, vomiting, hiccups, forgetfulness, insomnia, chest and rib pain, madness, convulsions, malaria, arm and elbow pain, shock, angina, arrhythmia, neurasthenia, schizophrenia, hysteria, pulselessness, etc.

On the palmar side of the forearm, along the line connecting Marsh at the Crook (PC-3) and Great Mound (PC-7), 2 cun above 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 feel two distinct cord-like tendons (the palmaris longus tendon and the flexor carpi radialis tendon);
Step 3: Measure upwards from the wrist crease on the palm side for 2 horizontal fingers (the width of the interphalangeal joint of the thumb is considered 1 cun), and the depression between the two tendons is the location of this acupoint.