On the dorsum of hand between the 4th and 5th metacarpal bones, in a depression posterior to the metacarpo-phalangeal joint.
Deafness, tinnitus, headache, sore throat and paralysis of upper extremities or hands. Headache, redness of the eyes, deafness, tinnitus, sore throat, febrile diseases, pain in the elbow and arm, motor impairment of fingers.
Clears heat, expels wind, benefits ears, lifts the mind, removes obstructions from the channel, and regulates Qi.
It is a Water point.
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Perpendicularly 0.5-0.7 inch