Ancient poetry and modern poetry:
Classical poetry is written in the style of ancient poetry. In the Tang Dynasty, poems from the Southern and Northern Dynasties were all ancient poems. Therefore, there is no certain standard for ancient poetry. It can be said that all poems that are not bound by the rhythm of modern poetry are ancient poems.
Modern poetry is represented by metrical poetry. Metric poems pay attention to rhyme, flatness and antithesis. Because metrical poems are very strict, they are called "metrical poems" or "metrical poems". Metric poems have four main characteristics: (1) each poem is limited to eight sentences, five * * forty words and seven * * fifty-six. (3) stipulate the level of each sentence; (4) Every poem should have antithesis in the designated position. There is a kind of metrical poem with more than eight sentences called "Long Rhyme", which uses antithesis except tail couplet (or head-tail couplet), so it is also called "Paiyun".
Quatrains and rhymes:
The first sentence of a quatrain can rhyme or not, and most of it rhymes. The second sentence and the fourth sentence must rhyme. Generally, the rhyme is flat, and the rhyme cannot be changed in the middle. The last word of the third sentence is limited to the word "lifetime".
The first sentence that rhymes can be rhymed or not: it can be rhymed if it rhymes; If it doesn't rhyme, it is limited to using rhyming words. Even-numbered sentences of a poem must rhyme. Generally, the rhyme is flat and can't be changed. Except odd sentences, the last word is limited to rhyme. Rhyming words cannot be repeated in this poem.