What are the requirements for the meter of poetry?

1, Syntax: The number of words in each sentence of ancient style is uncertain, including four words, five words, six words, seven words and even miscellaneous words (uneven sentences), and the number of sentences in each song is also uncertain, ranging from two sentences to dozens and hundreds. There are only five words and seven sentences in modern poetry, eight in metrical poetry, four in quatrains and more than eight in quatrains, which is also called long-style poetry.

2. Rhyme: each song in ancient style can use one rhyme or two or more rhymes, and rhyme change is allowed; Each song can only use one rhyme, and even the arrangement of dozens of sentences cannot be changed. Antique can rhyme in even sentences, or even sentences can rhyme in odd sentences.

3. Pingyi: The biggest difference between ancient and modern times is that the ancient style does not talk about Pingyi, while the modern style pays attention to Pingyi. After the Tang dynasty, the ancient style also pays attention to flatness, but it is irregular and can be ignored.

4. Duality: Each of the four verses has a specific name. The first couplet is called the first couplet, the second couplet is called the platoon couplet, the third couplet is called the neck couplet and the fourth couplet is called the tail couplet. For example, most of the five laws and seven laws in the whole Tang poetry are antithetical. Therefore, according to the right body couplet and the neck couplet, the head couplet and the tail couplet can be right or wrong.

5, avoid the same word relative: in a set of antithetical sentences, the upper sentence and the lower sentence cannot be the same word in the same word order position. The same words must be at the same time, and the same words must be wrong.

For example, "leaves fall like the spray of a waterfall, while I watch the long river roll forward." If it is changed to "leaves fall like a waterfall, and the endless Yangtze River rolls forward." Became the antonym of the same word. The same position in the upper and lower sentences is "nothing", and "nothing" is the antonym of the same word, which is a big taboo.