費工夫 [费－－]

Jyutping fai3 gung1 fu1
Pinyin fèi gōng fu

Definitions (Wiktionary)
  1. verb
    to take time and energy; to be time-consuming; to be exacting; to be demanding

費工夫 [费－－]

Jyutping
Pinyin fèi gōng fu

Definitions (CC-CEDICT)
  1. to spend a great deal of time and effort
  2. (of a task) demanding
  3. exacting