《后汉书·列传·吴盖陈臧列传》
第四年春，贼率五万余人乘夜攻汉营，军中惊乱，吴汉坚守不动，过了一阵子军心才安定。
明年春，贼率五万余人夜攻汉营，军中惊乱，汉坚卧不动，有顷乃定。
In the spring of the fourth year, bandits led over fifty thousand men at night to attack Han’s camp, the camp was in chaos, but Wu Han defended his position and after a while the army was stable again.