成則為王，敗則為寇 [－则为－－败则为－]

Jyutping sing4 zak1 wai4 wong4 , baai6 zak1 wai4 kau3
Pinyin chéng zé wéi wáng , bài zé wéi kòu

Definitions (CC-CEDICT)
  1. lit. called a king if successful, called a bandit if defeated (idiom)
  2. fig. losers are always in the wrong