According to the available data, Taiji appeared in the form of Taiji diagram, and was a famous Taoist and scholar in the Northern Song Dynasty. In Chen Tuan, Taiji was called the sleeping fairy Chen Xiyi. He is the author of Taiji Theory of Yin and Yang and Taiji Diagram, which vividly and intuitively shows the mysterious concept of Yin and Yang for the first time.
Chen Tuan (87 1 year 165438+989125 October-25 August), whose name was Tu Nan, whose nickname was Fu Yaozi, alias was Mr. Baiyun and Mr. Yi Xi, was the real source of Bozhou (now Luyi County, Henan Province). A famous Taoist scholar and health care practitioner in the Northern Song Dynasty. He is the author of Fetal Breathing Law, Treating the Mystery, Penetrating the Empty Chapter, Yi Xin Law, Notes of the Cloth-Dresser, Preface to the Yilong Map, Taiji Theory of Yin and Yang, Taiji Map, and Congenital Fiona Fang Map. He often travels between Huashan Mountain and Wudang Mountain. Song Taizong Zhao Guangyi awarded the title of "Mr. Yi Xi". In July of the second year of Duangong (989), he died in Zhangchao Valley of Huashan at the age of 1 18.