Location
( GV-16 Palace of Wind FENGFU - Acupuncture Points ) On the posterior midline, directly below the external occipital protuberance, in the depression between the origins of the trapezius muscle.

How to find
The external occipital protuberance is a hump-shaped projection on the posterior surface of the occipital bone, on the midline and slightly superior to the craniocervical junction. Locate GV-16 in a depression on the posterior midline that can be palpated directly inferior to the protuberance and between the two origins of the trapezius muscle. Generally, GV-16 is located approximately 1 cun superior to the posterior hairline.
-- G.B.-20 is located on the same level below the occiput, in a depression between the origins of the trapezius and sternocleidomastoid muscles.
Needling
0.5–1 cun slightly obliquely in an inferior direction. Bend the patient’s head slightly forward when needling. Caution: Dangerous point with deep needling! No stimulation. Strictly no needling in a superior direction, danger of puncturing the cerebellomedullary cistern (also site for suboccipital puncture). The needle should be inserted into the nuchal ligament. According to some authors, moxibustion is contraindicated.

Actions/Indications
Dispels (external) Wind
Calms internal Wind and the shen
Nourishes the Sea of Marrow, lightens the shen

Special features
Meeting point with the yang wei mai and, according to some authors, the yang qiao mai. Sea of Marrow point, Window of Heaven point, Sun Si Miao Ghost point. Used for all disorders which are caused by ‘external or internal’ Wind and which are characterised by sudden onset, changing location and/or intensity of the disorder, involuntary movements.