The main reason for the decline at the end of Yuan Dynasty and the beginning of Ming Dynasty is that in Yuan Dynasty, Mongolian foreigners were not interested in the Chinese culture at that time, and in a certain sense they were resistant. Therefore, in the Yuan Dynasty, poetry basically did not develop much. In the Ming Dynasty, for Zhu Yuanzhang, he was a beggar and had little education. How can we promote the development of poetry? Moreover, their descendants have an inexplicable worship of their ancestors, so the poetry of these two dynasties basically stagnated.
However, in the Qing Dynasty, Manchu worshiped China culture and translated the Romance of the Three Kingdoms into Manchu before entering the customs as a military education for aristocratic children. This shows that the Qing Dynasty is a transitional period in the development of poetry.