Poetry, pronounced: sh Ρ Ρ Ρ is a sentence that constitutes poetry. Poetry usually limits the number of words in each sentence according to its format. China's earliest poems were structured with metrical poems, and the metrical requirements were strict. For example, the poems in the pre-Qin period are generally four-character poems, which can be found in the Book of Songs. Later, it developed into a five-character or seven-character rhythmic poem, which was found in Tang poetry. After the further development of economy and culture in Song and Yuan Dynasties, the content of poetry was gradually expanded and deduced. In the later period of the new-democratic revolution, poetry evolved into a free poem that was not limited by the number of words.
The function of quoting poems in ancient articles is the same as that in present articles. Structurally, the articles are matched before and after, connecting the preceding with the following, and connecting the left and right, which plays the role of threading the needle. Emotionally, it plays a role in rendering the emotional atmosphere, pointing out the topic or deepening the theme, and expressing feelings through poetry.