夜以继日 yè yǐ jì rì

night and day (idiom); continuous strenuous effort

Word data

HSK Not in HSK
Frequency 17755th word

Definitions

  1. 1. night and day (idiom); continuous strenuous effort

Characters

Character Meaning
夜 yè HSK 5
night; variant of 夜yè
以 yǐ HSK 2
to use; by means of; according to
继 jì HSK 4
to continue; to go on with; to follow after
日 rì HSK 2
day; date, day of the month; sun