行之有效 [－－－－]

Jyutping hang4 zi1 jau5 haau6
Pinyin xíng zhī yǒu xiào

Definitions (CC-CEDICT)
  1. to be effective (idiom)
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, idiomatic
    effective