What are the seven methods of the Book of Songs?

It is the classification of poetry types in The Book of Songs. Pay attention to the difference between the seven laws and the seven musts.

Judging from the number of lines, it can be divided into (quatrains) and (regular poems); Judging from the number of words, it can be divided into (five-character) poems and (seven-character) poems. If both are taken into account, they can be divided into (five skills), (five methods) or (seven skills) and (seven methods).

Seven lines: seven sentences per sentence, four sentences per song, * * * 28 words.

Seven laws: seven sentences per sentence, eight sentences per song, * * * 56 words.