Second, the unprecedented national unification provided a realistic foundation for the prosperity of Tang poetry. China is a multi-ethnic country. Since the Han Dynasty, a multi-ethnic unity has been formed. Later, due to the decay of the ruling class, the split situation reappeared in the Northern and Southern Dynasties, the Sui Dynasty ended the chaotic situation of the split between the North and the South, and the Tang Dynasty restored and developed the multi-ethnic unity. In order to seal and govern the border areas, the rulers of the Tang Dynasty attached great importance to the frontier defense work and rewarded it greatly. This stimulated people's enthusiasm for going to the frontier to join the army, especially some literati, who went to the frontier to join the shogunate and hired the battlefield with the lords. "Being a centurion is better than being a scholar." "Fame is just around the corner. It' s really a man' s master and a woman' s master. " It has become a fashion to make contributions. The frontier fortress's military life and exotic scenery increased their knowledge, broadened their horizons and stimulated their creative enthusiasm, and a large number of poets came into being to express their frontier fortress feelings. According to statistics, there are more than 2000 poems with frontier fortress as the theme in the whole Tang Dynasty. The prosperity of frontier fortress poetry adds luster to the prosperity of Tang poetry.
Thirdly, the imperial examination system of selecting scholars by poetry and fu promoted the study and research of poetry by literati. At the beginning of the Tang Dynasty, the social economy recovered rapidly, and the influence of landlords among the common people continued to rise. In order to extensively attract civilian landlords to participate in politics, the Tang Dynasty inherited the Sui system, abolished the nine-product system that protected the privileges of the gentry in the Wei, Jin and Six Dynasties, and implemented the imperial examination. Imperial examinations in the Tang Dynasty can be divided into two categories: formal and systematic. The system is presided over by the emperor, and the subjects are temporarily set up and are not often held. Usually cited once a year, it is divided into six subjects: scholar, quiet, Jinshi and Faming. Candidates are concentrated in two subjects: scholar and Jinshi. Scholars mainly focus on poetry and fu, which is hard to reach, but it is easy to be promoted because of its wide occupation, especially for scholars. Most of the poems that should be written in the imperial examination are embellished and carved. However, the imperial examination system of selecting poets has stimulated people to study poetry angrily and put most of their energy into poetry creation, which is conducive to the continuous improvement of poetry art forms and the wide spread of creative experience.
Fourth, the ruler's personal hobbies and advocacy help the whole society pay attention to the formation of poetic atmosphere. Monarchs in the Tang Dynasty attached great importance to poetry, and all of them were capable of poetry. Emperor Taizong successively opened a literature museum and a Hong Wen museum, recruited a bachelor, compiled documents, and sang and chanted with them. Gaozong and Huang Wu often create their own new words for fun. Xuanzong himself is a poet. He said that every time he writes a poem, he will forget his worries when he is happy. Seventy-two bachelor of arts, literati poetry. Huang Wu held a banquet for his ministers. Song wrote the best poems and was awarded a royal robe. The emperor's hobbies and advocacy improved the poet's reputation and helped to form an atmosphere in which the whole society attached importance to poetry.
Fifth, it is the premise of producing a large number of poems attacking powerful people and truly reflecting riffraff. The peak of literature and art always appears in the era of relative liberation of thought. The rulers of the Tang Dynasty were honest and generous, and dared to recruit talents. Emperor Taizong can speak frankly and dare to remonstrate.