An Mian (N-HN-54) is located behind the ear in relation to which landmarks?

• A. Behind the ear, midway between Fengchi GB-20 and Yìfēng SJ-17.
• B. Center of the frenulum of the tongue between Jīnjīn and Yùyè.
• C. Back of the neck, 2 cun above DU-14 and 1 cun lateral to the midline.
• D. On the midline of the lower back, below L5.

Answer: (C)

Locating Mian uses fixed landmarks and precise distances to place it in the posterior head/neck region. The point is described as being behind the ear, in the back of the neck, specifically 2 cun above DU-14 (which is at the base of the neck around the C7 area) and 1 cun to the side of the midline. Moving up from DU-14 toward the occiput and stepping off the midline by one cun places you in the post-auricular area behind the ear, which is exactly where Mian is expected to sit. The other options place you in entirely different regions (in front of the ear/tongue area or down the midline of the lower back), so they don’t correspond to the posterior post-auricular location of this point.