Dantian, originally a term used by Taoism to cultivate the essence of Neidan, has three Dantian: Shangdantian 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 a place to hide sperm. Dantian has been widely used by various schools of qigong or luck (if you sing and speak with Dantian Qi, you can reduce the chance of vocal cord injury).