Ask about the history of China's most prosperous period. Summarized as follows 150 words.

Economically speaking, it belongs to the Tang Dynasty Empire. Because of its more enlightened politics, unprecedented economic prosperity, highly developed ideology and culture, and opening to the outside world, the rule of Zhenguan and the prosperity of Kaiyuan emerged. Speaking of military affairs, it belongs to the Great Yuan Empire. At that time, imperial fighters spread all over Europe, Asia and Africa, conquered many enemies, and established a huge empire with more than 20 million square kilometers in the east, the Arctic Ocean in the north, the Danube River basin and the South China Sea in the west. Speaking of politics, it belongs to the Qing Dynasty, whose feudal autocracy reached the peak in China's history, thus perfecting the feudal monarchy.