《太平广记·卷四十二·神仙四十二》
紫衣人自己介绍说： 我姓杜，名子华，遭遇战乱，避开人世，遇到神仙，在这居住已经有几百年了。 
因自言曰： 某姓杜，名子华，逢乱避世，遇仙侣，居此已数百年矣。 
The purple-clad man introduced himself and said: My surname is Du, and my name is Zi Hua. I encountered wars, avoided the world, and met an immortal. I have lived here for several hundred years.