Dantian is the place where Taoist inner alchemy is presented and guarded during alchemy. The specific location of dantian is upper, middle and lower dantian: Upper dantian is the place where the governor sealed the temple, also known as "Mud Pill Palace"; Zhongdiantian is the acupuncture point in the middle of the chest, where the clan spirit gathers; Xiadantian is the Guanyuan point of Renmai, three inches below the navel, and it is the place where essence is hidden.

Dantian is the place where Taoist inner alchemy is presented and guarded during alchemy. It was originally a term used by Taoism to cultivate the essence of Neidan, which is located on the golden section of the human body. The abdomen is divided into upper abdomen, middle abdomen and lower abdomen. There are many different opinions about the position of upper abdomen, middle abdomen and lower abdomen. The abdomen we usually say is the lower abdomen. There is a saying that the upper abdomen refers to the position of eyebrows, and the abdomen refers to the area of the heart, while the exact position of the lower abdomen we usually say is Shenque point, which is roughly the part around the navel, to be exact, one and a half inches below the navel. There is also a saying that the upper abdomen is called "Mud Pill", the Baihui point on the top of the head, the middle abdomen is called "Jianggong", the Zhongshan point on the chest, and the lower abdomen is a considerable volume under the umbilicus, including Guanyuan, Qihai, Shenque and Mingmen points. There is also a saying that the lower abdomen is three inches below the umbilicus, and the midline of the lower abdomen is ren mai.