Since the reign of Emperor Xuanzong of the Tang Dynasty, some reforms were carried out according to the actual situation at that time, and the efficiency of officials was greatly improved by appointing talents and political courts. Formulate relevant laws to bind officials and ensure that they can really do practical things for the people. During the reign, the death penalty was reduced and even abolished in 747 AD, becoming the only emperor in China's history who abolished the death penalty.
In terms of economic development and military affairs, it reformed the feudal system at that time, hit many rich and powerful people, liberated a lot of productive labor and reduced the burden on the people. At the same time, it suppresses Buddhist thought and improves farmers' enthusiasm for production. Militarily, Emperor Xuanzong of the Tang Dynasty vigorously developed agriculture on the border, so that the local area could hoard a large amount of grain, and then sent troops to expand its territory.
In terms of culture, ancient Tang poetry and Song ci are very famous, among which Tang poetry reached its peak in this period, and it was in this era that famous poets Li Bai and Du Fu left many famous sentences for future generations. In terms of economic development, not only domestic development, but also foreign trade is more frequent.
Under the careful management of Emperor Xuanzong of the Tang Dynasty, the comprehensive national strength of the Tang Dynasty quickly reached its peak and the population increased greatly. This period was called the prosperous time of Kaiyuan by later generations. However, in his later years, Emperor Xuanzong of the Tang Dynasty made the same mistakes as Li Shimin and Wu Zetian, indulging in pleasure and neglecting state affairs. As a result, the Anshi Rebellion broke out and was finally driven out of Chang 'an by the rebels. The eight-year Anshi Rebellion made the prosperous Tang Dynasty gradually decline. It can be said that Xuanzong personally ended the golden age of the Tang Dynasty.