Simply put, it's all from strong to weak! It was Han nationality in Tang and Song Dynasties, Mongolian nationality in Yuan Dynasty and Manchu nationality in Qing Dynasty. The political system was more similar in Tang, Song and Ming Dynasties, and more similar in Yuan and Qing Dynasties. After the Song Dynasty, the capital moved to Beijing, and Beijing dialect became the official language.

Of course, the biggest thing in common is that the royal family always has infighting, which makes the people of the whole country miserable. I think the replacement of these dynasties is directly related to feudal rule. The unique cultural isolation and infighting of the Chinese nation weakened the Qing Dynasty. Since the Yuanmingyuan was built by Yongzheng, China has lagged far behind the West. In fact, since Zheng He's voyage to the West, China's navy has been very strong. However, due to domestic civil strife and China's vast territory and abundant resources, we have not explored the world like the West! Imagine, if Zheng He really discovered the new continent and settled down, what nationalist consciousness is there against us now?

I think, as long as there is no civil strife in China, our nation will always be strong. French nation, Germanic nation, Yamato nation, Siberia, England, Scotland and so on will never be stronger than the Chinese nation!

Let's wait for us post-80s!