下工夫

xiàgōngfu
  1. to put in time and energy
  2. to concentrate one's efforts

CEDICT

Entry Composition

1 下工 xiàgōng
  1. to knock off (at the end of a day's work)
  2. to finish work
=2 夫 fū
  1. husband
  2. man
  3. manual worker
  4. conscripted laborer (old)
=2 夫 fú
  1. (classical) this, that
  2. he, she, they
  3. (exclamatory final particle)
  4. (initial particle, introduces an opinion)