《后汉书·列传·皇甫张段列传》
并且他们自冬到春，集结驻扎不散，人马疲乏病弱，这是一种自亡的形势，只要抓紧招降，可以不发一兵而制服强大的敌人呢。
且自冬践春，屯结不散，人畜疲羸，自亡之势，徒更招降，坐制强敌耳。
Besides, they gather and station themselves from winter to spring without dispersing, and their horses and men are fatigued and weak. This is a self-destructive situation. As long as we seize the opportunity to recruit and surrender, we can subdue our powerful enemy without sending troops.