It is opposite to free verse, which has no fixed rules and formal requirements. Metric poems are mainly divided into five words and seven words, each of which is divided into different metrical poems. As the name implies, a five-character poem has five words in each section and a seven-character poem has seven words. The number of words, rhyme and fluency of these words must follow certain rules.
For example, the rhyme of five-character quatrains is that every sentence has a flat rhyme, and the flat tone is in the second and fourth sentences; The metrical pattern of seven-character quatrains is that every sentence has a level tone, and the level tone is in the first sentence, the third sentence and the fifth sentence. The meter of five-character metrical poetry is three-level rhyme in each sentence, and it is even in the second and fourth sentences, which also requires rhyme; The meter of seven-character metrical poem is three-level rhyme for each sentence, and even words are in the first, third and fifth sentences, which also requires rhyme.
Metric poetry plays an important role in China's ancient poetry. It requires poets to express their thoughts and feelings with limited words and even rhymes, which is a highly literary form. In the process of creation, the poet needs to think, modify and adjust repeatedly in order to achieve rigorous, beautiful and coordinated results. Therefore, metrical poetry is not only a literary form, but also the embodiment of literary accomplishment and skills.