the outer and inner defences of the mountains and rivers ❍ 子犯曰： “战也。战而捷，必得诸侯。若其不捷，～，必无害也。” (《左传·僖二十八年》) Zifan said，“Fight. If we fight and are victorious,you are sure to gain all the States; if we do not succeed,we have the outer and inner defences of the mountains and the Yellow River,and shall not receive any injury.”