China's ancient poetry can be roughly divided into two categories: one is called archaic poetry (or "ancient style"), which began in the Tang Dynasty. In the Tang Dynasty, the new metrical poems at that time were called modern poems, while the poems with less metrical restrictions before the Tang Dynasty were called ancient poems. According to the Tang Dynasty, later generations called Yuefu folk songs, poems written by scholars before the Tang Dynasty and poems written by scholars after the Tang Dynasty "archaic poems". According to the number of words in poems, there are four words (such as The Book of Songs), five words (such as Han Yuefu's poems), seven words (such as Ge Yanxing by Cao Pi) and miscellaneous words (such as Li Bai's Difficult Road to Shu). Classical poetry rhymes freely. The other is called modern poetry (or "modern poetry"), which is a new style of poetry that appeared in the Tang Dynasty.
There are two kinds of modern poetry, one is called "quatrains", each with four sentences, which are abbreviated as five words and seven words. One kind is called "metrical poem", each poem has eight sentences, five characters are abbreviated as five laws, seven characters are abbreviated as seven laws, and more than eight sentences are called excluded laws (or "long laws"). The rhythm is very strict. There are definite sentences (except arrangement), definite characters in sentences, definite rhymes (definite rhymes), definite tones (definite tones of each word in the poem) and definite couplets (the two rhymes in the middle must be aligned).
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Ci is a genre evolved from poetry. Ci is a poetic style that rose in Sui and Tang Dynasties. The formal characteristics of words are "fixed tone, fixed sentence and fixed words". Every word has a title called "epigraph".
The number of words is relatively short, and the shortest is only a dozen words. For example, the 16-character order, the longest is only 240 words, such as the preface to Yingying. Generally speaking, less than 58 words are considered as "minor melody", 59 to 90 words are considered as "alto", and more than 9/kloc-0 words are considered as "long tune". Most words are segmented in structure, and a paragraph is called "a paragraph" (or "a piece") in music. Words can be divided into monosyllabic (not fragmented), disyllabic (divided into two pieces), trisyllabic (divided into three pieces, such as warrior Lan Ling) and tetrasyllabic.