不打不成相識 [ㄅㄨˋ ㄉㄚˇ ㄅㄨˋ ㄔㄥˊ ㄒㄧㄤ ㄕˊ; bu4 da3 bu4 cheng2 xiang1 shi2] don't fight, won't make friends (idiom); an exchange of blows may lead to friendship ◄ ►