Which GB point is below the axilla in the fifth intercostal space, 1 cun anterior to Yuānyè GB-22, approximately at the level of the nipple?

• A. GB 20
• B. GB 21
• C. GB 22
• D. GB 23

Answer: (D)

This item tests precise chest-wall localization along the Gallbladder meridian. In the chest region, the GB points in the fifth intercostal space line up from posterior toward the front along the lateral chest near the axilla. The description specifies a point in the fifth intercostal space that is 1 cun anterior to the point GB-22, and located roughly at nipple level. That exact position corresponds to GB-23. It’s further anterior than GB-22 but in the same intercostal space, which is what the description conveys. The other points are located in different regions (GB-20 is at the neck/base of the skull, GB-21 at the shoulder, GB-22 sits more posterior near the axilla), so they do not match this description.