From Webster, "Utiliatarianism" is the aim of action should be the largest possible balance of pleasure over pain or the greatest happiness of the greatest number.
China is the largest country by population in the world. A very quick argument would be 'We have the most people, so anything that's good for our people is good for the world." That thinking justifies ghettos - the minority would upset the majority, and the most pleasure for the majority is what utilitarianism is.
That has me worried - it's a simple argument that is wrong on deeper inspection. What do you think as a Chinese expat? What was CCP's argument for the Great Firewall?
Population reference: https://www.worldatlas.com/articles/countries-by-percentage-...