Wēiguānxià shū (M-BW-12) is located at which of the following positions?

• A. On the midline of the lower back, below L5.
• B. 1.5 cun lateral to the lower border of the spinous process of the eighth thoracic vertebra (T8).
• C. 0.5 to 1 cun lateral to the depressions below the spinous processes of T12-L5.
• D. 1.5 cun lateral to the prominence of the spinous process of the fifth thoracic vertebra (T5).

Answer: (B)

Wèiguānxià shū is a Back-Shu point that follows the standard rule: locate the spinous process of the corresponding vertebra, take the lower border as the reference, and go 1.5 cun lateral to the side. This places the point in the paraspinal region at the level of T8, not on the midline or at a different vertebral level.

So, the best location is 1.5 cun lateral to the lower border of the spinous process of T8. The other options place the point at the wrong level (T5 or T12-L5) or in the midline or at an incorrect distance, which is inconsistent with how Back-Shu points are located.