ㄅㄧㄥㄌㄞˊㄐㄧㄤˋㄉㄤˇbīnglái‑jiàngdǎngㄕㄨㄟˇㄌㄞˊㄊㄨˇㄧㄢˇshuǐlái‑tǔyǎn

兵来将挡,水来土掩
  1. 比喻不論遇到任何狀況情況採取應對措施 我們萬全準備兵來將擋,水來土掩不用」。

counter soldiers with arms, water with an earth weir (idiom)​; different situations call for different action, to adopt measures appropriate to the actual situation