日夜兼程 rì yè jiān chéng

DEFINITIONS

  1. to travel day and night

CHARACTERS

日 rì
HSK 2
sun; day; daytime
夜 yè
HSK 5
night, dark; in night; by night
兼 jiān
HSK 5
unite, combine; connect; and
程 chéng
HSK 4
journey, trip; schedule, agenda