《旧唐书·列传·卷四》
李密于是向朝廷称臣，接受朝廷命令，带兵到黎阳抵御宇文化及，凡是打了胜仗就派遣使者向朝廷报捷，人们都很高兴。
密遂称臣奉制，以兵拒化及于黎阳。每战胜，则遣使告捷，众皆悦。
Li Mi then became a minister to the imperial court, accepted the court's orders, led troops to Liyang to resist Yuwen Huaji, sent messengers to the imperial court to report the victory after every victory, and the people were very happy.