狗尾续貂

Explanation: Metaphors make bad things get connected to the good things behind the front two are incompatible. 　　Usage: The main predicate; as subject, predicate, attribute; for written language 　　Source: Song Sun Guangxian "Bei" Article 18: "Luanli since the official post excesses, champion for the auxiliary, unworthy sequel." 　　Examples: San sigh concluded that "Water Margin" Only seventy back, and cursing is ~ Luo Guanzhong. ★ Hu, "" Water Margin "research" Four Thesaurus:  s head with the fecal, s head with the fecal, s head plus foul