《资治通鉴·唐纪·唐纪七十七》
杨行密给朱全忠送去书信说： 诚师古、葛从周，都不是我的对手，你亲自来淮水上游一决胜负。 
行密遗全忠书曰： 庞师古、葛从周，非敌也，公宜来淮上决战。 
Yang Xingmi sent a letter to Zhu Quanzhong, saying: "Pang Shigu and Ge Congzhou are not my opponents. Come to the upper reaches of the Huai River in person to divide the winners and losers."