打啞炮

Simplified: 打哑炮

dǎyǎpào ㄉㄚˇ ㄧㄚˇ ㄆㄠˋ

    • to fail to achieve the goal
    • to fall flat

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
fire a dud shell
Meaning
To fail or miss the goal, like a shell that does not go off. Close to 'to fall flat'.

Sources