Politically, the country is unified, the political situation is relatively stable, and the ruling policy has been adjusted, forming a political pattern with three provinces and six departments as the core. The establishment and perfection of the imperial examination system ensured the stability of the political pattern from the officer system to the recruitment system. The rule of Zhenguan was the key period for the formation of this pattern, and the prosperity of Kaiyuan reached its peak.
Economically: the feudal economy was unprecedentedly prosperous. The development of agriculture and handicrafts promoted the prosperity of commerce. Chang 'an is an international metropolis, and the development of the city is an important symbol of commercial prosperity. After the Anshi Rebellion, the national economic center of gravity began to move south.
Ethnic relations: The rulers of the Tang Dynasty practiced a relatively liberal ethnic policy. In ethnic minority areas, they either set up institutions, adopt the policy of titles, or implement the policy of kinship. Policies are flexible and diverse, the ties between ethnic groups have been strengthened, and a unified multi-ethnic country has been further developed.
Foreign relations: The Tang Dynasty adopted a relatively open foreign policy, with frequent economic and cultural exchanges between China and foreign countries, and its contacts with Asia, Europe, Africa and other countries showed an unprecedented grand occasion.
Culturally, the culture of the Tang Dynasty is profound, world-leading, all-round prosperous, far-reaching and eclectic. Formed the overall pattern of "Chinese cultural circle".