Why are China people called Han Chinese?

Han people used to be called Han people because there was a Han dynasty in China.

The Han nationality was originally called "Huaxia" in the Central Plains. Later, it gradually assimilated with other ethnic groups. Since the Han dynasty, it has been called the Han nationality. The Han nationality is the main ethnic group in China, a descendant of the ancient Huangdi and Yan Di tribes, and a descendant of the Chinese nation. The Han nationality has a long history and has never been interrupted in history, and it is also the largest nationality in the world.