《资治通鉴·汉纪·汉纪十一》
前将军李广与右将军赵食其率领的东路军因没有向导，在沙漠中迷失了道路，所以落到卫青的后面，没能赶上与单于的那一战。
前将军广与右将军食其军无导，惑失道，后大将军，不及单于战。
The Eastern Route Army led by General Li Guang and Right General Zhao Shiqi lost their way in the desert because they had no guide, so they fell behind Wei Qing and failed to catch up with the battle against the Chanyu.