不知薡蕫

Explanation: Ding Dong: grass name, soft rope can be prepared. Metaphor of ignorance, lack of knowledge 　　Usage: Verb-object type; as the predicate attribute; containing derogatory 　　Source: "Mailyard Grass": "pod, Ding Dong." Guo Pu Note: "like Po and thin. I do not know who Ding Dong, Shu Mai intended to distinguish it not almost?" 　　Examples: I said in that fool '~'. ◎ Ming Dong Si Zhang, "saying some ancestral blown King _Set_" Thesaurus:  cannot tell beans from wheat, The journey