According to most wuxia/ancient series, central plain is considered center of the world, the best place to live in ancient world. It ranks #1 in almost everything... Martial arts, medicine, military, wealth, technology, education, law, food, ect... are the best in the world. Ancient china are very prouded of themself and considered all the outside world as inferior.... The rest of the world envies china and would do anything to steal their secrets to be like them...ect...
I wonder whether all these are true or just propaganda of wuxia/china... There is no doubt that china was very powerful during ancient time, but I don't think they are the best in everything and envied by the rest of the world....