《资治通鉴·后梁纪·后梁纪二》
壬午，李存勖率军前进，距离柏乡三十里，派遣周德威等率胡人骑兵逼近后梁营挑战，后梁兵不出。
壬午，晋王进军，距柏乡三十里，遣周德威等以胡骑迫梁营挑战，梁兵不出。
Renwu, Li Cunxu led the army forward, thirty li from Baixiang, and sent Zhou Dewei and others to lead the Hu cavalry to approach the Later Liang camp and challenge them. The Later Liang soldiers did not come out.