《宋史·列传·卷一百八十九》
五关失守以后，那么蕲州、黄州决不可能保住；蕲州、黄州不能保住，那么，江南就危险了。
五关失守，则蕲、黄决不可保；蕲、黄不保，则江南危。
After the Five Passes are lost, then Qizhou and Huangzhou will definitely not be able to be defended; if Qizhou and Huangzhou cannot be defended, then Jiangnan will be in danger.