the lecture table: Tianzhu Cave)
The third is Tianzhu Cave.
Just below the back of the neck in the recess.
That is, about 2 timeters half an inch on the midline of the posterior hairline.
There is one acture point 1.3 inches on each side.
Massage this position when feeling tired and sleepy.
It refresh the mind and relieve fatigue.
And in the retionship between husband and wife.