《旧唐书·列传·卷九十》
当初，建中年间李洧率徐州归附朝廷，不久李洧去世，此后高承宗父子、独孤华相继任徐州刺史，因被贼军侵扰掠夺，百姓贫困无以为生；又因徐州是咽喉要地，处于江淮航运的要冲，朝廷早就想挑选权位尊宠的大臣去镇守。
初，建中年，李涓以徐州归附。涓寻卒，其后高承宗父子、独孤华相继为刺史。为贼侵削，贫困不能自存；又咽喉要地，据江淮运路，朝廷思择重臣以镇者久之。
At the beginning, during the Jianzhong era, Li Wei led Xuzhou to surrender to the court. Soon after, Li Wei died, and following that, Gao Chengzong and his son and Du Guhua were successively appointed as Prefects of Xuzhou. Because of being plundered and harassed by the rebel army, the people were poor and had nothing to eat. Because Xuzhou was a key strategic point, a vital hub on the waterway in the Jiang and Huai, the court had long wanted to select a minister with high authority and great honour to garrison there.