1, each song is limited to eight sentences: the five laws stipulate that each sentence is five words, and the whole song is ***40 words; The seven laws stipulate that each sentence has seven words and the whole sentence has fifty-six words.
2, limited to the use of flat rhyme, and a rhyme to the end, the middle can not change rhyme. The five laws take the first sentence as a positive example and rhyme as an example; The seven laws take the rhyme of the first sentence as a positive example, and the non-rhyme as a variant.
3. The sentence pattern and word level of each sentence are stipulated: pay attention to adhesion and rightness.
4. antithesis should be used in each sentence, which is an important feature of metrical poetry. The other two groups don't need to go to war.
Couplets are called "couplets", commonly known as pairs. Concise and profound, neat and balanced, with one word and one sound, is a unique art form of Chinese language.