What are the writing characteristics of five-character poems?

Five-character verse is a kind of modern poetry. Each poem has eight sentences, the third sentence and the fourth sentence, the fifth sentence and the sixth sentence must be opposite, and the flat lines must be arranged according to a specific format, one is straight and the other is glued. Only rhyme can be juxtaposed, and rhyme has a fixed position, that is, even sentence rhyme (the first sentence can be juxtaposed or not). Strictly speaking, the rhythm form is two two-tone steps plus one-tone step. One-tone step can only appear in the sentence or at the end of the sentence, but not at the beginning of the sentence. The levels of two adjacent two-tone steps must be opposite.