Which point is on the flexor aspect of the forearm, 5 cun proximal to Da Ling P-7, on the line connecting Da Ling P-7 and Quze P-3, between the tendons of palmaris longus and flexor carpi radialis?

• A. PC 2
• B. PC 5
• C. PC 4
• D. SJ 2

Answer: (C)

The point is the Xi-cleft point of the Pericardium on the forearm. It sits on the flexor aspect, 5 cun proximal to Da Ling (the wrist crease point on the PC meridian), along the line from Da Ling to Quze, and it lies between the tendons of palmaris longus and flexor carpi radialis. Because it matches all four cues—forearm location, distance from Da Ling, alignment with the Da Ling–Quze line, and the exact tendon relationship—the correct choice is Pericardium 4. This point is the Xi-cleft point of the PC meridian and is commonly used for acute issues along the PC channel. The other options would be located at different points along the arm or hand and do not fit this precise location.