泥沙俱下

Explanation: Refers to the rapids in the river with soil and sand washed down with water. Good and bad mixed metaphor. 　　Usage: The main predicate; as the predicate attribute, clause; for the person or thing 　　Source: Qing Yuan Mei, "as parks Poetry" Volume I: "person who was great, such as the thousands of miles of the Yellow River, and that pays top academics. I thought: this rough before, it is also not great." 　　Results: River rising water 　　Postscript: River rising water 　　Riddle: Gold Rush Thesaurus:  Niujitongzao, Niu Ji with the groove, Niujigonglao