The most remarkable literary achievement of the Tang Dynasty is the Tang poetry. Since Chen Ziang and the "four outstanding poets in the early Tang Dynasty", famous poets in the Tang Dynasty have emerged one after another, among which Li Bai, Du Fu, Cen Can and Wang Wei in the prosperous Tang Dynasty, Li He, Han Yu and Bai Juyi in the middle Tang Dynasty, Li Shangyin and Du Mu in the late Tang Dynasty are several representatives. Their poems have different styles, including rich imagination of the mythical world and detailed description of real life, including passionate frontier poems, gloomy and heavy "poetic history" and fresh and refined pastoral poems. These poems are isomorphic and become outstanding representatives of China's literary achievements. Although there were still outstanding poets in the Song, Ming and Qing Dynasties, the overall level of regular poetry and classical poetry was not as good as that of the Tang Dynasty, which made Tang poetry an insurmountable peak of classical poetry in China.
The religious policy in the early Tang Dynasty was relatively tolerant, and the two traditional religions in China, Buddhism and Taoism, both developed greatly. In the Tang Dynasty, Taoism was the state religion, and princes and nobles were all proud of Taoist priests, taking Laozi, Zhuangzi, Wen Zi, Liezi and other Taoist classics as themes. In the early years of the Tang Dynasty, monk Xuanzang went to Tianzhu (now India) to study 657 Buddhist scriptures, so the Tang Dynasty built the Wild Goose Pagoda to preserve these Buddhist scriptures. Xuanzang absorbed a lot of Taoist terms in order to conform to the national conditions of the Tang Dynasty at that time. A large number of Buddhist classics were translated and introduced, and China monks' own ideological system gradually matured, which made China Buddhism develop steadily during this period, and most major sects of China Buddhism were formed or matured during this period. Other religions, such as Islam, Nestorianism (Christian nestorius) and Zoroastrianism, were also introduced into China with international exchanges. When Tang Wuzong adopted a high-handed policy towards Buddhism, it was known in history that Huichang destroyed Buddhism, which made other Buddhist sects, except a few sects such as Zen, never recover.
The Tang government pursued a relatively open foreign policy. In 64 1 year, Emperor Taizong sent someone to escort Princess Wencheng to Tubo to marry Zambizong Zambopo. Later, Princess Jincheng married Zampchi Dezuzan and formed an alliance for the same family. Brought the advanced culture of the Tang Dynasty to Tubo. In 822, the Tang-Fan Alliance was established, and the boundaries were demarcated and non-aggression. The Jokhang Temple in Lhasa still preserves the monument of the Tang-Fan Alliance. In 794, the Tang Dynasty and Nanzhao joined forces in Diancang Mountain, and the two sides established good relations.