《汉书·传·荆燕吴传》
汉王败于成皋，向北渡过黄河，夺得张耳、韩信的军队，将军队驻扎在脩武县城。一方面深挖战壕，高筑壁垒；另一方面，派刘买带兵两万人，骑兵数百，进攻楚国，渡过白马津，进入楚地，焚烧了楚国的粮草，破坏了楚军的军需供给，使其无法供应项王军队的粮食。
汉王败成皋，北度河，得张耳、韩信军，军修武，深沟高垒，使贾将二万人，骑数百，击楚，度白马津入楚地，烧其积聚，以破其业，无以给项王军食。
King Han was defeated in Chenggao, he crossed the Yellow River northwards, took Zhang Er and Han Xin's army, and stationed his troops at Xiuwu. On one hand he dug deep moats and build high ramparts; on the other hand, he send Liu Mai to lead 20,000 soldiers, and a few hundred cavalries, to attack the Chu state, cross the Baima Ford, enter the Chu territory, burn the Chu's granaries, and disrupt the supply of the Chu army, making it impossible to supply King Xiang's army.