疲于奔命 pí yú bēn mìng

DEFINITIONS

  1. (idiom) terribly busy
  2. up to one's ears in work

CHARACTERS

疲 pí
HSK 5
feel tired, be exhausted; weak
于 yú
HSK 3
in, on, at; go to; surname
奔 bēn
HSK 6
run fast, flee; rush about; run
命 mìng
HSK 4
life; destiny, fate, luck; an order, instruction