yè​yǐ​jiē​rì

to work day and night

  1. noun
    night
    the period between sunset and sunrise; evening; night; (classifier) used as a counter for nights or evenings
  2. prepositionconjunction
    in order to
    in order to; so as to; used to connect two phrases where the second is the purpose of the first
  3. to connect
    to join; to connect separate parts together; to extend something by adding a section; to graft
  4. nounadverb
    daytime
    daytime; the period between sunrise and sunset as opposed to night