What are the factors that affect the development of modern and contemporary poetry?

China's modern and contemporary poetry mainly refers to the poetry creation from the May 4th literary revolution to the present. To be exact, the poetry creation in the historical period from the May 4th literary revolution to the eve of the founding of New China can be called the modern poetry creation period, while the poetry creation from the founding of the People's Republic to the present can be called the contemporary poetry creation period. With the birth of the May 4th New Literature, China's modern poetry also came into being. With the needs of socialist construction, China's contemporary poetry has also appeared in front of the world with a brand-new look. The birth of China's modern and contemporary poems is by no means accidental. This is a new poem that conforms to the trend of world literature in the 20th century and meets the needs of China's new-democratic revolution and socialist construction. This is one of the important beginnings of China literature modernization.