Points: Three points in total that are 0.5 cun, 1 cun and l.5 cun above Changqiang (GV 1), respectively
Technique: After performing routine sterilization, pinch up the subcutaneous tissues with the left hand, and hold a three-edged needle or syringe needle with the right hand, pricking the subcutaneous tissues to let out some blood. The pricking method is used once a week, three sessions being one course.