《资治通鉴·汉纪·汉纪三十九》
班超估计敌方的军粮快要吃完，一定会向龟兹求援，便派出数百伏兵在东方路上拦截。
超度其粮将尽，必从龟兹求食，乃遣兵数百于东界要之。
Ban Chao estimated that the enemy army must be running low on supplies and would have to ask Guizi for help. He dispatched hundreds of ambush troops to wait along the road to the east.