《史记·七十列传·李将军列传》
那时汉朝边那的李广、程不识都是名将，但是匈奴人害怕李广的谋略，士兵也大多愿意跟随李广而以跟随程不识为苦。
是时汉边郡李广、程不识皆为名将，然匈奴畏李广之略，士卒亦多乐从李广而苦程不识。
At that time, Li Guang and Cheng Buzhi on the Han border were both famous generals, but the Huns were afraid of Li Guang's strategy, and most of the soldiers were willing to follow Li Guang and take it as a hardship to follow Cheng Buzhi.