打疲劳战

Traditional (Taiwan): 打疲勞戰

dǎpíláozhàn ㄉㄚˇ ㄆㄧˊ ㄌㄠˊ ㄓㄢˋ

    • to wear oneself out with long hours of busy work that achieves little

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
fight a war of exhaustion
Meaning
To wear yourself out with long hours of busy work that achieves little.

Sources