Mingmen is located at the waist, the posterior median line, and the depression under the spinous process of the second lumbar vertebra. Chengshan point, located in the middle of the back side of human calf, between Weizhong point and Kunlun point, is a sharp corner depression under gastrocnemius muscle when calf is straight or heel is raised. In the middle of the knee, behind the knee, the midpoint of the transverse line of the popliteal bone. Shenshu, located under the spinous process of the second lumbar vertebra, has a lateral opening of 1.5 inch, between the fascia of the back of the waist, the longest muscle and the iliocostal muscle. Kunlun, behind the lateral ankle, the depression between the tip of the lateral ankle and the achilles tendon.