There are quite a few qigong works in Song and Yuan Dynasties, including Zhonghe Ji and San Ri Yi Shu by Li Daochun, Huanzhen Ji by Wang Jie, Wu Xuan Pian by Yu Dong, Gu Shen Pian by Lin Yuan, Yi Zhi Analysis by Niu Daochun, Bao Zi San Feng Dan Ji by Jin Yueyan and Quan Zhen Dian by Mr. Well-known. There are also the contents of qigong health preservation such as "taking interest after eating" and "nourishing nature".