《旧唐书·列传·卷一百五十》
下令召见，他却来了。天宝十三年正月，他到华清宫拜见玄宗，乘机哭着说： 我是奚族人，不识汉字，皇上越级提拔我，以致杨国忠想要杀我。 
十三载正月，谒于华清宫，因涕泣言： 臣蕃人，不识字，陛下擢臣不次，被杨国忠欲得杀臣。 
Summoned him but he came. In January of the 13th year of the Tianbao Era, he appeared in the Huaqing Palace to pay his respect to Xuanzong, seizing the opportunity to cry and said: "I am a native of the Xi Tribe, I can't read Chinese characters. Emperor, You have promoted me exceptionally, that's why Yang Guozhong want to have me killed." 