揚清激濁 [ㄧㄤˊ ㄑㄧㄥ ㄐㄧ ㄓㄨㄛˊ; yang2 qing1 ji1 zhuo2] lit. drain away filth and bring in fresh water (idiom); fig. dispel evil and usher in good eliminate vice and exalt virtue ◄ ►