From the perspective of meter, poetry can be divided into classical poetry and modern poetry. Ancient poetry is also called ancient poetry or ancient style; Modern poetry is also called modern poetry.
In terms of the number of words, there are four-character poems, five-character poems and seven-character poems.
There are "two ancient poems" or "three ancient poems" in primary school Chinese textbooks. "Ancient poetry" is a word with a wide meaning. "Ancient Poetry" in a broad sense refers to all the poems in China's ancient literary works. Most of the ancient poems in primary school Chinese textbooks are metrical poems and quatrains, but they are not equal to metrical poems and quatrains. The so-called "ancient poems" include "ancient poems" and "modern poems". Classical poetry is what people in the Tang Dynasty call poems before the Tang Dynasty, including various forms of poems in the Han, Wei and Six Dynasties, such as Yuefu in the Han and Wei Dynasties, folk songs in the Southern and Northern Dynasties, literati poems in the Six Dynasties and miscellaneous poems. The characteristic of classical poetry is that the number of each sentence is unlimited, including four words, five words, six words, seven words and miscellaneous words, and it doesn't pay attention to hierarchy and level. Poems written by people after the Tang Dynasty in the form of ancient poems are also called ancient poems, which are generally called "ancient styles". Modern poetry is a poetic genre opposite to classical poetry, and it is a metrical poem that appeared in the Tang Dynasty, which is divided into metrical poems and quatrains. The metrical poems of modern poetry are more rigorous, including definite sentences (eight sentences per sentence), definite characters (five or seven words), definite tones (parallel arrangement) and definite pairs (two couplets in the middle).