潑水難收 pō shuǐ nán shōu

DEFINITIONS

  1. water once spilt cannot be retrieved (idiom); irreversible change

CHARACTERS

潑 pō pour, splash, water, sprinkle; violent, malignant
水 shuǐ water, liquid, lotion, juice
難 nán difficult, arduous, hard; unable
收 shōu gather together, collect; harvest