《资治通鉴·汉纪·汉纪十三》
途中被匈奴重兵包围。汉军一连几天缺乏粮食，伤亡惨重。
匈奴大围贰师将军，汉军乏食数日，死伤者多。
During the expedition, he was surrounded by a large force of Huns. For many days in a row, the Han army was without food and suffered heavy casualties.