Qu, curve; ze, marsh.
The Qi of meridian infuses into the shallow depression of the elbow like water flowing into a marsh.
On the transverse cubital crease, at the ulnar side of the tendon of m.biceps branchii.
Cardiac pain, stomachache, vomting, diarrhea, pain in elbow joint.
Perpendicularly 0.5-1.2 cun.