First, the prosperous Tang Dynasty laid a certain cultural foundation. The dynasty in which Li Bai lived can be said to be very happy, because he was born in the Tang Dynasty with the highest national strength. At that time, it was the Tang dynasty, and the country was rich and strong. In addition, the cultural exchanges between ethnic groups are very extensive and the folk customs are very simple. In particular, the opening of the Silk Road exposed them to many different new things, so many literati and poets left many beautiful chapters, among which Li Bai was one of the representatives. Li Bai lived a heroic life and especially liked to visit the great rivers and mountains of the motherland, so his poetic language was extremely light and his imagination was very rich.
Second, Du Fu, a modernist, lived a stable and prosperous life because of his superior family conditions when he was young. He was very studious since he was a child, and he was able to write poems by himself at the age of seven. Because of his rich family, he had the opportunity to be influenced by various arts since he was a child, which had a great influence on his later poetry creation. Du Fu was ambitious all his life. Unfortunately, in the late Tang Dynasty, due to various reasons, the Tang Dynasty began to decline. After the An Shi Rebellion broke out, Du Fu suffered many misfortunes and began to worry about the country and the people. Du Fu's poems are better used in poetry, and his metrical poems have influenced many people in later generations. It can also be said that he is the pioneer of Xinyue Poetry Club. His poems are very recognizable, catchy and unforgettable.
Because of Li Bai's and Du Fu's poems, we can understand the reasons why the Tang Dynasty went from prosperity to decline, and we also know that the Tang Dynasty, as a big country at that time, was worshipped by all countries. It was brilliant at that time, but it was bound to decline in its heyday. In the late Tang Dynasty, it began to decline, and the outbreak of Anshi Rebellion completely ended its century-old glory.