《资治通鉴·隋纪·隋纪六》
自从我们起兵以来，虽然屡次取胜，但郡县一级的官员却无人响应。东都的防卫力量还很强大，全国各地的援军到的越来越多，您应当挺身奋力作战，早早平定关中，可您却急于称帝，为什么让人看到您那么狭隘呢？ 
兵起以来，虽复频捷，至于郡县，未有从者；东都守御尚强，天下救兵益至，公当挺身力战，早定关中，乃亟欲自尊，何示人不广也！ 
Since we launched our uprising, although we have won many victories, the officials at the county level have not responded. The defense of the Eastern Capital is still very strong, and reinforcements from all over the country are increasing. You should fight hard and pacify Guanzhong early, but you are eager to claim the title of emperor. Why do you let people see that you are so narrow-minded?