《资治通鉴·魏纪·魏纪六》
司马懿率军暗中渡过辽河，向北挺进，直扑襄平。卑衍等大为惊恐，率军连夜撤回。
懿潜济水，出其北，直趣襄平；衍等恐，引兵夜走。
Sima Yi led his army to secretly cross the Liao River and advance north, heading straight for Xiangping. Bei Yan and the others were greatly alarmed and led their troops to withdraw overnight.