辞穷理屈

Explanation: Flimsy grounds, has been reduced his speechless. 　　Source: "Fresh Song Chuan Cheng," or words, people Jieyi violation of, not too difficult; the difficulty will be cut to a fresh, perhaps a wide false Ciqiongliqu to be emperor, and then _set_ it. " 　　Examples: Salmonella a smell study sheets, the words meaning no wrong to argue the release of hundreds of words, were induced by asking. Heretics ~, DU mouth does not pay. ★ Tang Xuan Zang "Buddhist Records Jie Luo Nasu cutting thorns that country"