Democracy means rule by the majority. Ethnic minorities are happy with China, I have no idea what you're referring to here. You keep making vague, unbacked statements like this, or saying "personal testemony isn't pretty," but when given actual evidence of the opposite you try to say it doesn't matter.

The CPC's policies come from the bottom up, and are implemented from the top-down. The CPC has over 100 million members, and itself is democratically run. This is a socialist democracy, not one of competing parties but one focused on cooperation and cohesion. Capitalists and fascist dissenters are punished and censored, just like socialists and communists are in capitalist countries. The difference is class based, which is why Chinese citizens love their system while westerners hate theirs.