It is located at the midpoint of the line between the posterior superior iliac spine and the sciatic tuberosity, projecting downward to the slightly medial part of the midpoint of the line between the sciatic tuberosity and the greater trochanter of the femur. It is rich in local blood vessels and nerves, so when suffering from lower extremity and leg diseases, it can be treated by stimulating the ring jump point and local acupuncture, which is good for rheumatic and biliary meridian diseases. It is good for lower limb paralysis, lumbar and knee weakness, rheumatic paralysis or rubella, edema, and pain in the lumbar and crotch areas. Modern clinical application for suffering from sciatica, lower limb paralysis or inflammation and infection of the tissues around the hip joint can be treated by local acupuncture, massage or local moxibustion, all of which will receive good effects and results.