Are there any people of pure Han descent in history?

I can say no, China is a big family, ethnic integration began in the Northern and Southern Dynasties, and the definition of Han nationality is hard to say. If it is a descendant of the Chinese people, it is a small tribe. At that time, there were Jiuyi tribes, and China people defeated Jiuyi. That woman is likely to be regarded as a prisoner, a tribute, etc. Naturally, there is no such thing as pure Han Chinese. Anyway, China is a big family, and we are connected by blood.