"Lu Dan Gui Master Chapter" written in small regular script by Yan Xiaoshan, the grandson of Yan Jingming, the Minister of Household Affairs in the Qing Dynasty, source: the postscript at the end of the volume of the biographies of Taoist Yuan Cheng in modern regular script, collected by the Palace Museum.

Yan Xiaozhi, who was in Chaoyi, lived in his residence in Peiping.