1, whole: the number of words in each sentence is neat.
2. Couples: antithesis is required in poetry.
2.Leaf: it means that even and odd sentences are opposite in turn.
4, rhyme: refers to ancient poetry can only be flat rhyme.
5. Harmony: It means that there are strict rules for the leveling of the whole article.
6. Degree: It means that the full text is definite.