Which GV point is on the midline at the top of the head, 1 cun posterior to the anterior hairline and 0.5 cun posterior to Shéntíng DU-24?

• A. GV 22
• B. GV 24
• C. GV 23
• D. GV 21

Answer: (C)

The placement on the head uses precise midline landmarks and measured distances from the hairline. Start with Shéntíng (DU-24), which sits at the anterior hairline on the midline. From that point, move 0.5 cun directly backward along the midline. Then identify the point that lies 1 cun behind the anterior hairline, and that is also 0.5 cun behind Shéntíng. That combination of distances locates GV-23. The other options correspond to different spots along the midline that don’t match these exact measurements from the hairline and DU-24, so they don’t fit this description.