三寸不烂之舌

Explanation: Analogy can be argued that eloquence. 　　Usage: Partial official; as object; analogy articulate, good at dealing with the mouth 　　Source: Yuan Li Shouqing "Wu member Chuixiao" First off: "Laoer rest assured that, with my silver tongue, met with Wu members, afraid he does not come." 　　Examples: Niche must go there since, with ~, that they occupied. (Ming Shinai "Tales of" the fifteenth back) Thesaurus:  the three-inch tongue (said of a persuasive person who can talk others into doing something, about which the listener at first holds reservations)