Which point lies on the flexor aspect of the forearm, 5 cun proximal to Da Ling P-7 along line to Quze P-3?

• A. PC 4
• B. PC 2
• C. PC 7
• D. SJ 1

Answer: (A)

The main idea here is locating a Pericardium point along the flexor forearm by a precise distance from a known landmark. From Da Ling (Pericardium 7) toward Quze (Pericardium 3) on the inner forearm, 5 cun proximal sits Xi Men (Pericardium 4). This places it on the flexor aspect of the forearm, between PC-7 and PC-3, along the PC channel.

That’s why this choice is correct: Xi Men is the point described by being 5 cun proximal to Da Ling along the line to Quze on the inner forearm.

The other options don’t fit the described location: one is not on the same forearm line at that distance, another lies at the wrist, and the remaining is on a different channel altogether.