In my opinion, the Tang Dynasty was the heyday of feudal society in China. The reasons are as follows: first look at the region. During the Tang Dynasty, China's territory spanned Lake Baikal in the north and today's Kazakhstan in the west. Central Asia surrendered to China and conquered Vietnam in the south. Japan, Korea and other countries surrendered, but the Ming Dynasty could not even conquer a North dollar. Looking at the economy, the productivity level of the Tang Dynasty was quite developed, and the foreign trade was the first in the world at that time, compared with the Byzantine Empire. The Arab Empire traded with other first-class powers in the world at that time, and Chang 'an became the first metropolis in the world at that time. However, the "sea ban" policy of the Ming Dynasty finally sprouted capitalism in China, which was also strangled by the powerful and decadent feudal forces, and China lost a chance to be strong and the world. Let's look at culture. The Tang Dynasty is a dynasty with an open culture, which is all-inclusive, eclectic, rich in culture, rich in people's lives and open-minded. However, the rulers of the Ming Dynasty bound people's thoughts with Zhu Cheng's Neo-Confucianism, which led to the serious destruction of people's thoughts. How can such a society be regarded as the heyday of China feudal society?
Finally, look at the international environment. During the Ming Dynasty, the world was in the embryonic stage of capitalism, and capitalism was becoming the mainstream of historical development. As a social form, feudal society is out of date, and it is impossible to reach its peak when the Ming Dynasty was strong. At best, this is a sign of feudal society. The era in which the Tang Dynasty lived was the heyday of feudal society. The feudal rule of the Tang Dynasty met the requirements of historical development at that time, and because of this, the Tang Dynasty created the heyday of feudal society, a real prosperous time.