Which point on the abdomen is 2 cun lateral to the midline and 1 cun superior to the umbilicus, level with Shuǐfēn REN-9?

• A. ST 24
• B. ST 20
• C. ST 21
• D. ST 23

Answer: (A)

Understanding point location relies on the cun system and reference lines like the midline and the Ren vessel. Here, you measure 1 cun above the umbilicus and 2 cun lateral to the midline, with the point on the same horizontal level as Shuǐfēn REN-9. The stomach-channel point that sits exactly at those coordinates is ST-24. In practice, locate the umbilicus, move 1 cun upward, then go 2 cun to either side from the midline, ensuring you’re on the same horizontal plane as REN-9 to confirm the position. The other nearby points do not align with this precise combination of vertical and horizontal distances, so they don’t fit the description.