Which point is approximately 0.5 cun anterior to the upper border of the root of the ear, in a slight depression on the posterior border of the hairline of the temple?

• A. SJ 20
• B. SJ 22
• C. SJ 21
• D. SJ 15

Answer: (B)

Understanding point location on the head relies on precise landmarks and small “cun” measurements. In the temple region, a point sits in a slight depression at the back edge of the hairline, about half a cun in front of the upper edge of the ear root. This spot is exactly where one San Jiao point is located, along the temple branch of the channel that runs toward the ear. That makes this point the best fit for the description, since it sits right at the temple hairline depression described. It’s commonly used for temple-area symptoms and ear-related complaints, reinforcing why this location is remembered with that specific point. Other nearby points aren’t located in that same depression or at that precise distance from the ear, so they don’t match the description as well.