（四）道教内丹术与周天功内丹术又称丹鼎术，内丹功。（性命圭旨）指出：释家谓之法轮（法轮常转），道家谓之周天，儒家谓之行庭，实质则一。“周天”是借用古天文学术语，原义是太阳、二十八宿等天体沿黄道运行一周的运动。内丹术称内气沿仟脉督脉循环一周为“，J＼周天”． (D) Taoism and Inner Mongolia, Zhou Tiangong also known as Dan Ding surgery, internal Dan Gong. (Department of Life): It is pointed out that the Falun (Falungen), which is the home of the Falun Dafa, and the Zhou Dynasty of the Daoist, is actually one of Confucianism’s actions. “Zhoutian” is borrowed from ancient astronomical terms. The original meaning is the movement of the sun, twenty-eight places, and other celestial bodies running one week along the ecliptic. According to the internal medicine technique, internal gas is circulating along the Duomai Vessel for one week as “J Zhou Tian.”