Which point is located for needling with a direction 0.5 to 1 cun obliquely towards the heel, or perpendicular insertion 0.5 to 0.8 cun?

• A. GB40
• B. LV1
• C. LV2
• D. LV3

Answer: (B)

Liver Jing-Well point on the big toe is treated by directing the needle along the liver channel’s path. That means inserting obliquely toward the heel (posterior) so the needle follows the meridian as it travels up the leg, with a depth of about 0.5 to 1 cun. If you choose a perpendicular insertion, 0.5 to 0.8 cun still reaches the proper tissue planes along the channel. This combination—location at the lateral side of the big toe nail bed and the specified directions and depths—fits LV1 and supports qi along the Liver channel without going too deep. Other Liver points occupy different spots and have different needling directions, so they don’t match this exact description.