hi! additional input is welcome, but FYI, you may be interested in a few similar posts

• How did China come to be 90% Han Chinese?

• Why is such a high proportion of China Han? How has ethnicity developed in China over its history?

• How did the Han come to dominate China? To what extent was one's ethnicity an important factor in the Communist Party?

• What made the Han Chinese so successful as an ethnic group in terms of population?

• Is the concept of the Han Chinese race a modern one?