《元史·列传·卷八十九》
见面时，世祖对他说 ，宪宗九年，我在鄂州，曾令王一清访问你的父亲，你父亲叫王告诉我，过二十年后，天下将统一。
及见，语之曰： 昔岁己未，朕次鄂渚，尝令王一清往访卿父，卿父使报朕曰：后二十年天下当混一。
When they met, Shizu said to him, "In the ninth year of the reign of Xianzong, I was in Ezhou and ordered Wang Yiging to visit your father. Your father asked Wang to tell me that in twenty years, the world would be unified.