Are poems written before the Tang Dynasty necessarily ancient poems?

The so-called modern poetry is a general term for metrical poems and quatrains. As for lz, the format conforms to modern poetry, and besides the number of words and sentences, the meter should also conform to it. Such examples are rare. For example, many palace poems and landscape poems in the Qi and Liang Dynasties meet all the requirements of modern poetry, but they don't need to be counted as modern poetry. First of all, we should make clear what modern poetry is. After Zhou Qing revealed the law of Chinese phonology, Shen Yue put forward "four tones and eight diseases", which inspired later poets. Rhymes and quatrains in the Tang Dynasty are the products of this poetic trend. Modern poetry and ancient poetry are poems used to distinguish whether they are written in strict accordance with rhythm in the Tang Dynasty, which was only formed in the Tang Dynasty, so it is obviously correct to say that there were no modern poems before the Tang Dynasty. Lz said that "seven-step poetry" conforms to the format, but the concept of modern poetry is unknown. The so-called format, as mentioned earlier, is not only limited by the number of words and sentences, but also by the temperament. Of course, this poem is not a modern poem, not even a modern poem. There is also a version of "Seven Steps Poetry", which says, "Boiled beans make soup and fermented beans make juice." . The dustpan burns under the kettle, and the beans weep in the kettle. This is the same root, why rush to speculate with each other? "It's five words and six sentences, and what we recite is not adapted by later generations. There are many stories in this poem, no matter which version, it is not a modern poem. In addition, it is no coincidence that the poems that appeared in the Southern Dynasties coincided with the rules of modern poetry. It is an inevitable phenomenon that China's literature and China's poetry develop to a certain extent, and it is in line with the law that literature pursues the beauty of phonology. In a word, poets in the Tang Dynasty and beyond can write classical poems, but the ancients can't write modern poems. Even if some works conform to the laws of modern poetry, they are only individual phenomena. I remember reading a joke when I was a child. In the Tang Dynasty, a scholar went to the provincial examination and wrote "There are many famous mountains and treasures". His classmates laughed at him, saying that he broke the rules after writing five words, but he said that Xie Lingyun had a poem "Spring grass grows in the pond". If I'm biased, I'm breaking the rules. This joke may not be true, but you can know that there were no mature and strict restrictions on poetry writing in the Southern Dynasties, but it was different in the Tang Dynasty. Shen Yue put forward "four tones and eight diseases", even his own poems could not be observed. Strictly speaking, the meter of Tang poetry did not mature until the middle Tang Dynasty. The maturity of five-character quatrains and metrical poems is easy to remember. Li Bai and Wang Changling are masters of seven-character poems, and Du Fu standardized the creation of metrical poems. I want to say that this should be relatively complete. These are common sense of literary history, and we can find a set of literary history, from Wei and Jin dynasties to Tang and Song dynasties.