工於心計 [－于－计]

Jyutping gung1 jyu1 sam1 gai3
Pinyin gōng yú xīn jì

Definitions (CC-CEDICT)
  1. scheming
  2. calculating
Definitions (Wiktionary)
  1. phrase, idiomatic
    scheming; calculating; adept at scheming
Examples (粵典–words.hk)
  1. Cantonese
    工于心计
    工於心計
    gung1 jyu1 sam1 gai3
    • good at scheming