徹夜不眠 chè yè bù mián

DEFINITIONS

  1. to be sleepless all night

CHARACTERS

徹 chè penetrate, pervade; penetrating
夜 yè
HSK 5
night, dark; in night; by night
不 bù
HSK 1
no, not; un-; negative prefix
眠 mián
HSK 5
close eyes, sleep; hibernate