#002 The Han culture is superior or even the cradle of the world civilizations
If any researcher who has no experience of fighting the Han Chinese draws the above conclusion, it only suggests they are ignorant.
The Han culture expands in its unique way and form. It expands through aggression in the Han way. Their victims or adversaries only have two choices, either defeat the Han in their own ways or fight the Han in the Han way. The latter effectively turns them into Hans.
The Han culture evolves around aggression and fight in a dishonest and dishonorable way. It becomes the core of the Han culture.
And yes, it has influenced Koreans and some South East Asians. But its influence isn't the same as "superiority or the cradle of the world civilizations". The opposite is true. It hinders the races that it influences, with the only exception, the Japanese..
(Why are the Japanese immune to the Han crime culture? Because there's a more fundamental Nipponism in Japan that makes them who they are and gives them immunity to the Han culture. Confucianism in Japan isn't the same in China.)
And why does "the cradle of the world civilizations" have to adopt (fake) democracy to show the world they are not ancient nor pure Chinese any more, but become modern?