口角生风

Explanation: Metaphor to speak fluent, articulate 　　Usage: The main predicate; as predicate, object; describe the people speak 　　Source: Guo, "Bo Song" Chapter 11: "This curse is mouth when the wind, no more 'this is' the disturbed." Thesaurus:  a silver tongue, Eloquent, Can be made straightforward talk, credibility, plausibility, credibility