混为一谈

Explanation: To mix different things together, as the same thing to talk about. 　　Usage: Verb-object type; as predicate, object; used in negative sentences 　　Source: Han Yu, "Ping Huaixi monument": "10000 and by-laws, and for a talk." 　　Examples: See "wills" with the "Emotion" in the end the same, is not to ~. (Qing "Shi Yan Shi Yan Debate (3)") 　　Riddle: Different monologues