《旧唐书·列传·卷五十三》
河西兵马使李光弼告危，跑进来相告，等他来时，忠嗣问： 李将军有什么事吗？ 
河西兵马使李光弼危之，遽而入告。将及于庭，忠嗣曰： 李将军有何事乎？ 
Li Guangbi, the commander of the Hexi army, reported a crisis and rushed in to inform him. When he arrived, Zhong Si asked, "What's the matter, General Li?"