Liao Gong said: Wet, wet. Cut, cut also. When you come to the acupoints where the pulse stops, if there is no ball for metaplasia, you will pour water into the acupoints, so that the bones will be soaked and rotted by steam, so it is called shower head.
If the water on the top of the metaplastic brain mass can't meet before the acupoint halo, or flows out in the opposite direction on the left and right sides of the acupoint halo, and the real sand is cut off, then the real water can't gather, so it's called foot cutting.
In fact, that is to say, there is a convex at the back of the hole to block water, and a concave in front of the hole to collect water.