潑涼水

Simplified: 泼凉水

pōliángshuǐ ㄆㄛ ㄌㄧㄤˊ ㄕㄨㄟˇ

    • to pour cold water on
    • to dampen someone's enthusiasm

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
throw cool water
Meaning
A variant of 泼冷水: to discourage someone's enthusiasm.

Sources