Which BL point is 1.5 cun posterior to BL-6 and 4 cun within the anterior hairline, 1.5 cun lateral to the midline?

Which BL point is 1.5 cun posterior to BL-6 and 4 cun within the anterior hairline, 1.5 cun lateral to the midline?

• A. BL-6
• B. BL-7
• C. BL-8
• D. BL-9

Answer: (B)

On the forehead, the Bladder points along the anterior hairline sit in a row with a consistent lateral offset from the body's midline. Describing a point as 1.5 cun behind another point on that same line and about 1.5 cun from the midline, still within the hairline, matches the location of the next point in that sequence. That point sits just behind BL-6 along the same forehead line and maintains the lateral offset from the midline, which is BL-7. The other options would place you either more anterior or at different positions along the line, so they don’t fit both measurements at once.

On the forehead, the Bladder points along the anterior hairline sit in a row with a consistent lateral offset from the body's midline. Describing a point as 1.5 cun behind another point on that same line and about 1.5 cun from the midline, still within the hairline, matches the location of the next point in that sequence. That point sits just behind BL-6 along the same forehead line and maintains the lateral offset from the midline, which is BL-7. The other options would place you either more anterior or at different positions along the line, so they don’t fit both measurements at once.