《太平广记·卷四十九·神仙四十九》
这时有几个戴黄帽子的人出来，很谨慎地拜见黄冠老人，并且说： 真君怎么晚了呢？ 
有黄冠数人出谒甚谨，且曰： 真君何迟也？ 
At this time, several people wearing yellow hats came out, cautiously greeting the old man in the yellow crown, and said: "Why is Zhenjun so late?"