《后汉书·列传·皇甫张段列传》
不久，听到消息，虏在奢延泽，于是率轻快部队快速前进，一日一夜走二百多里，早晨追到贼，击败了他们，剩下来的寇虏，逃到落川，又集合起来。
寻闻虏在奢延泽，乃将轻兵兼行，一日一夜二百余里，晨及赋，击破之。余虏走向落川，复相屯结。
Before long, he heard that the enemy was in Sheyanze. He then led the light, swift troops to advance rapidly, traveling more than 200 li in one day and one night. He caught up with the enemy in the morning, defeated them, and the remaining enemy fled to Luochuan, where they regrouped.