兵來將敵，水來土堰 [－来将敌－－来－－]

Jyutping bing1 loi4 zoeng3 dik6 , seoi2 loi4 tou2 jin2
Pinyin bīng lái jiàng dí , shuǐ lái tǔ yàn

Definitions (CC-CEDICT)
  1. counter soldiers with arms, water with an earth weir (idiom); different situations call for different action
  2. to adopt measures appropriate to the actual situation