《资治通鉴·隋纪·隋纪五》
因而城池久攻不下。六月，己未，炀帝来到辽东城南，观看辽东城的形势，他把将领们召集起来斥责说： 你们自以为官居高位，又依恃着家世显赫，想要暗中怠慢欺骗朕吗？
既而城久不下，六月，己未，帝幸辽东城南，观其城池形势，因召诸将诘责之曰： 公等自以官高，又恃家世，欲以暗懦待我邪！
As a result, the city was not captured for a long time. On June 2nd, Emperor Yang arrived at the south of Liaodong City to observe the situation of Liaodong City. He summoned the generals and accused them: You think you are in high positions and rely on your prominent family background. Do you want to secretly neglect and deceive me?