2. The exact location of Dachangshu:
(1) positioning: at the waist, under the spinous process of the fourth lumbar vertebra, the posterior midline is opened 1.5 inch.
(2) Simple acupoint selection: Touch from both sides of the abdomen to the thigh to find a protruding arc, which is the anterior superior iliac spine, and find the intersection of its spinous process and the spine, and the lower edge is opened with two fingers.
3, the role of Dachangshu: Dachangshu is the back Shu point of the large intestine, which is the place where the large intestine is transported by qi. It is good at dispersing the heat of the large intestine and fu-organs, preventing and treating intestinal diseases, and has the functions of regulating the stomach, clearing fu-organs, eliminating dampness and stopping diarrhea. It is an important point for treating large intestine diseases and recuperating the large intestine.