1 cun directly above the midpoint of the posterior hairline, directly below the external occipital protuberance, in the depression between m. trapezius of both sides.
On the midline at the nape of the neck, in the depression immediately below the external occipital protuberance.
Needling Method:
Puncture perpendicularly 0.5-0.8 inch. Deep puncture is not advisable. Medullary bulb is in the deep layer, special attention should be paid in acupuncture.
References
Acupuncture
11.Grasping the Wind(First Edition) - Andrew Ellis, Nigel Wiseman, Ken Boss