ㄕㄚˋshàㄈㄟˋfèiㄎㄨˇㄒㄧㄣxīn

  1. 費心使浪子回頭煞費苦心。」

to take a lot of trouble (idiom)​; painstaking, at the cost of a lot of effort
se casser la tête, se donner beaucoup de mal