机关算尽

Explanation: Body: well, clever tricks. Analogy exhausted mind. 　　Usage: The main predicate; as predicate; containing derogatory 　　Source: Song Huang Ting "cowboy song" poem: "How many Chang Ming Like, authorities exhausted as monarch." 　　Examples: ~ Too much, forget lost his tail. (Qing Cao Xueqin's "Dream of Red Mansions" The Fifth) Thesaurus:  rack one's brains in scheming, body eat, eat thinking