The depression below the danzhong point is the zhongtian point located at the midpoint of the sword-thoracic union, at the location of the flat fifth rib gap on the anterior midline. The danzhong point is located in the front center line on the horizontal flat fourth rib gap at the sternum, which is the position of the two nipples connecting line midpoint. The point in the depression under the danzhong point is the Zhongting point, which is located at the junction of the sword and chest, and also belongs to the Ren Vessel. The Sword-Thoracic Joint is the location where the body of the sternum meets the handle of the sternum, and is slightly concave on the surface of the body. Zhongting acupoint is used to treat fullness in the chest and ribs (a collective term for the chest and ribcage area), heart pain, as well as vomiting and children vomiting breastmilk. If pain or other discomfort occurs here, it is recommended to seek medical attention as soon as possible to avoid delaying the condition.