佛祖統紀 52.89

52.89

周世宗。召華山隱士陳摶。問飛升之術（云云）○隱士譚景升與陳摶為友。著化書百十篇。久之仙去（宋齊丘竊用此書作自名行世）。

Emperor Shizong of the Later Zhou summoned Chen Tuan, the recluse of Mount Hua, to inquire about the arts of ascending by flight (and so forth). The recluse Tan Jingsheng was friends with Chen Tuan; he authored the Huashu in 110 chapters, and after a long time departed as an immortal (Song Qiqiu plagiarized this book and circulated it under his own name).