Are the four ancient poems divided into the first couplet and the second couplet

Four ancient poems are not necessarily divided into the first couplet and the second couplet. Not all ancient poems have first couplet, parallel couplet, neck couplet and tail couplet, but only in regular poems. For example, when eight verses are completed, every two sentences become couplets, which is four paragraphs. The first couplet is the first and second sentences, the parallel couplet is the third and fourth sentences, the neck couplet is the fifth and sixth sentences, and the tail couplet is the seventh and eighth sentences.

The upper and lower sentences of every metrical poem are antithetical sentences, and the first couplet and the last couplet can be right or wrong.

If quatrains are used in antithesis, they are often used in the first couplet. For example, Su Shi's Drinking Chu Qingyu on the Lake, the first couplet is antithetical. There are also many end-to-end confrontations. For example, Meng Haoran's "Sleeping in Jiande". It is not uncommon to use antithesis at the beginning and end, that is, the whole article uses antithesis. For example, Wang Zhihuan's In the Heron Villa.

Some people say that quatrains are only four sentences of metrical poems, and it is incorrect to explain the origin of quatrains. But in terms of hierarchy and level, quatrains are really four sentences of metrical poems: or two lines are intercepted before and after, and there is no confrontation; Or intercept the second couplet, all with antithesis; Or intercept the first two couplets, and the first couplet does not need to be checked; Or after interception, the two links are combined into one, and the tail link does not need confrontation.