《太平广记·卷二百四十·谄佞二》
说张易之是周灵王的太子晋转世，并在缑氏山为王子晋建造祠堂。
云是王子晋后身，于缑氏山立祠。
The words said that Zhang Yizhi was a reincarnation of Prince Jin, the son of King Zhou Ling. A祠堂 Temple was built for him on Gou Shi Mountain. 