Moman(莫漫)is very common in classical poetry,but it is a troublesome problem to interpret.The representative opinions of the predecessors hold that it should be a synonymous structure,and means forbidden or not allowed.From the point of view of rhythm poem antithesis,we find that Moman(莫漫)in both synchronic and diachronic antithesis sentences is not synonymous.It should be understood as don't be casual or don't try in vain.This conclusion can be supported by the similar structure of Xiuman(休漫),the different materials in Tang(唐)poetry and the contextual meaning in some non-antithetical structures.
Moman(莫漫)Xiuman(休漫)Explanations of words in ancient books
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