The Seven Rhymes is the abbreviation of Seven-character Rhyme. Eight sentences, seven words each, * * * 56 words. Generally speaking, every sentence is rhymed (the first sentence can be bet or not), and the rhyme remains unchanged at the end.
Judging from the number of words in poetry, there are four-character poems, five-character poems and seven-character poems. Four words are four words, five words are five words and seven words are seven words. After the Tang Dynasty, there were few four-character poems, so they were usually divided into five-character poems and seven-character poems. Five-character ancient poems are referred to as five ancient poems for short; Seven-character ancient poems are referred to as seven ancient poems; The use of three, five and seven characters at the same time is generally considered as seven ancient characters. Five-character verse is referred to as five laws for short, limited to eight sentences and forty words; Seven-character metrical poems are abbreviated as seven laws, and are limited to eight sentences and fifty-six words. More than eight sentences are called long method, which is also called exclusive method. The long method is generally a five-character poem. Only four sentences are called quatrains; Five lines * * 20 words, seven lines * * 28 words. There are two kinds of quatrains: absolute and ancient. The law should be restricted by Pingqimi, and the ancient law should not be restricted by Pingqimi. The ancient absolutely is generally limited to the five absolutely. These four verses all have 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. According to the regulations, parallel couplets and neck couplets must be opposite, and the first couplet and the last couplet can be right or wrong.