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On the dorsum of the hand, midway between the transverse wrist crease and metacarpophalangeal joint, between the 2nd and 3rd metacarpal bones, and between the 4th and 5th metacarpal bones, 4 points in all on both hands.
Puncture perpendicularly 0.5-1.0 cun.
This point is also known as Yaotongdian.