Like i said. China is a big country, . Chinese in the south don't look the same as Chinese from the north. Similar to how Indians in the north don't look like Indians in the south. "Han chinese" itself is actually made out of a lot of different groups that the CCP shoved together even though they are quite different. In some ways the fight between Hong kongers and Mainland Chinese is also partly ethnic because Cantonese are not really the same as northern Chinese mainlanders despite being catogorized as also "Han Chinese" by the CCP.