不眠不休 bù mián bù xiū

DEFINITIONS

  1. without stopping to sleep or have a rest (idiom)

CHARACTERS

不 bù
HSK 1
no, not; un-; negative prefix
眠 mián
HSK 5
close eyes, sleep; hibernate
不 bù
HSK 1
no, not; un-; negative prefix
休 xiū
HSK 2
rest, stop; retire; do not!