Not all the names in the Yuan Dynasty were numbers, but numbers accounted for the majority. This is actually because people were divided into four grades in the Yuan Dynasty, and the Han people were the last grade. Therefore, in the eyes of Mongolian rulers, the Han people were just slaves with low status and were not qualified to have names, so they were all named after numbers. For example, Ming Taizu, the founding emperor of the Ming Dynasty, was also a farmer in the Yuan Dynasty, and his name was Zhu Chongba.
the Mongolian regime was founded by Genghis Khan, who led the Mongolians all the way invincible and killed countless enemies. The nation itself was magnificent and tall with high quality physical quality. In Kublai Khan's period, the Mongolian minority finally unified all countries and established the Yuan Dynasty, becoming the only unified dynasty established by ethnic minorities in history. But this regime didn't exist for a long time, because he didn't respect the Han culture well and tried to unify the whole country with grassland culture, which didn't work in the Central Plains. The leader didn't know how to be flexible, which led to the demise of the whole regime.
During the Yuan Dynasty, the society was in turmoil, and they knew nothing about cultural integration, and even less about the assimilation power of Chinese culture. Because the Mongolians grew savagely, they did not have a long history, so they did not have a profound culture. The ruling class in Mongolia divides people into four classes. Mongolians are at the highest level, followed by Semu people and finally Han people. People of different levels have different political rights and are treated separately. Because of their low social status, their names can only be replaced by numbers. For example, Zhu Yuanzhang's father is called Zhu Wusi and Zhu Chongba.
It is precisely because of this different treatment that people's hearts were divided, people's discontent gradually accumulated, and peasant uprisings broke out one after another. Finally, the peasant uprising led by Zhu Yuanzhang successfully overthrew the Yuan Dynasty and established the Ming Dynasty.