Well, no one can deny that the China was clearly a Third World country in 975 and today it is at least second world, with thousands of millionaires. And the Chinese are hardly all slaves. I have a Taiwanese friend whose wife is from the Tsing Tao, on the Mainland, and her parents, neither of whom is a Communist Party member, retired at age 50 with a two bedroom apartment in the city and enough money to fly to the US every year or so. They receive a pension large enough to live a middle class lifestyle.
The leadership of China should be commended for their accomplishments. The People's Republic is more prosperous than Cuba, Myanmar, Lebanon or Moldova. Consider this: in a country of 1.3 billion people, there is no system of government in which the people can possibly have a close relationship with the national leadership. China used to have famines and many people could not afford shoes. Now they have bicycles even in the poorest villages in the interior, and mopeds and cars in the cities.
Real labor unions are impossible in China, the Muslim minority is oppressed and exploited and the press is not free. But there is prosperity for many people and there is less hunger there than in parts of the US.
What causes inequality in China is the same thing that causes it here in the US: capitalism. Capitalism creates inequality unless it is carefully controlled and managed. Chinese culture is vastly different than US culture: the people have a tradition of collective action that goes back centuries.
You seem poorly informed about China.