A sheet without a bone is memorised and forgotten. The bony landmark leads; the cun divides the distance when the text gives one.
The order
Read the bone or crease named on the sheet. Find that mark on your body or on the 3D figure. Only then measure the cun the text adds. If bone and cun disagree, read again: do not place the point where it is convenient.
Two cun that get mixed
Thumb cun is quick in class. Proportional cun divides a known segment, for example elbow to wrist. The cun guide separates them slowly.
One example
ST36 is studied from the knee: below ST35, one finger lateral to the tibial crest. The knee is the bone. The three cun are the measure. The sheet and the atlas have to say the same thing.
What a cun isST363D bodyLocation drill
Questions
- Is a cun a centimetre?
- No. It is a measure proportional to the body you are studying. The same “three cun” fits a short forearm and a long one.
- Is the 3D atlas enough?
- The atlas fixes the picture. The school and supervised palpation confirm the hand. This page does not replace that table.
Study reference within traditional Shiatsu/TCM frameworks. Does not diagnose or treat.