《魏书·列传·卷六》
周朝的北伐，仅获取中等利益；汉氏对外抵御，才收到下策的效果。
周之北伐，仅获中规；汉氏外攘，裁收下策。
The Northern Expeditions of the Zhou dynasty only achieved moderate gains; only the Han dynasty's foreign defense efforts were moderately successful.