鱼龙混杂
dragons and fish jumbled together;good and bad people mixed up;the genuine being mixed with the false;thread and thrum
泥沙俱下,~。The waters were muddied,and the bad became mixed with the good.
鱼龙混杂yú lónɡ hùn zá
比喻好人与坏人混在一起。good and bad people mixed up, an admixture of the genuine and the fake, the bad mixed with the good