How to find

After locating the spinous process of C7, count down 2 spinous processes to the lower border of the spinous process of T2. Locate BL-41 3 cun lateral from the midline (with the shoulders relaxed and the arms hanging loosely down, 3 cun corresponds on this level to the distance from the midline to the medial border of the scapula). Note: From BL-41 to BL 54 (Order’s Limit), all points on BL (Bladder Channel – Zu Tai Yang) are located on its outer branch.Located on the same level are a point of Ex-B-2 (0.5 cun lateral to the midline), BL 12 (Wind Gate) (1.5 cun lateral to the midline) and SI 13 (Crooked Wall) (more laterally, on the scapula).


3 cun lateral to the posterior midline, on the level of the lower border of the spinous process of the 2nd thoracic vertebra (T2).


  • Expels pathogenic factors such as Wind and Cold
  • Opens the channel and the luo vessels, alleviates pain


Meeting point with [[SI]].