《宋史·列传·卷一百三十三》
两淮不保，那么长江决不能守住；长江不能守，那么江、浙决不会安全。
两淮不保，则大江决不可守，大江不守，则江、浙决不可安。
If the Two Huai areas cannot be kept, then the Yangtze River will definitely not be able to be held; if the Yangtze River cannot be held, then Jiang and Zhe will definitely not be safe.