Dantian-originally a term used by Taoist Neidan School to cultivate spirit, it is widely quoted by various qigong schools. The book Treasure of Oriental Medicine quoted the words of Shenxian Jing, which not only pointed out the position of Tian Chan, but also expounded the function of Tian Chan: "The brain is the marrow sea and returns to Tian Chan; The heart is crimson fire, in the abdomen; Three inches below the navel is the lower abdomen. Xia Dantian, the house of Tibetan essence; Every day, the house of Tibetan gas; Go to the Tibetan Temple in Dantian. " The ancients called Yuanqi three treasures and regarded Dantian as the storage place of Yuanqi, so they attached great importance to the significance of Dantian and regarded it as "the foundation of life".

"Heart crimson GongJinQue, demonstrated also-in my heart.

Also known as Nakata, Taoguan, Huang Ting, Huang Zhong and Gui Zhong. Zhongdantian is three inches and six points below the heart and three inches and six points below the hilum. It is a hole in the void, and Fiona Fang is one inch and two points, which contains the baldness of innate truth. After Dan's success, this is the place to raise Dan.