《容斋随笔·卷十二·曹操用人》
张辽在合肥打跑孙权，郭淮在阳平抵御蜀国军队，徐晃在樊城打关羽，都是以少胜多，解除了一方面的忧患。
张辽走孙权于合服，郭淮拒蜀军于阳平，徐晃却关羽于樊，皆以少制众，分方面忧。
Zhang Liao repelled Sun Quan at Hefei, Guo Huai checked the Shu army at Yangping, and Xu Huang defeated Guan Yu at Fancheng, all of whom triumphed over vastly larger enemy forces and eliminated a threat from one direction.