The reverse posterior extremity point is one inch below the ling bone, in the depression before the thumb section, and the red and white flesh is felt between the concave points. The needle is placed 4-6 minutes deep and left for 30 minutes. Main treatment: shoulder and back pain. According to clinical experience, the anti-backward extremity point should be taken flexibly and unrestrictedly, and the pressure point can be found on the ulnar side of the first metacarpal bone, which is very effective in treating various pains, especially in treating shoulder pain that cannot be extended backwards. My clinical use is as follows: Shoulder pain: kidney guan, anti-backward extremity point, spirit bone, dabai. Falling pillow: Anti-posterior extremity point, Chengjiao. Neck and back and headache: Ling Bone, Dabai, Anti-Backward Jie points.