wow, no bigotry hereBecause they can't keep their mouths shut. By definition. And that's not linked with intelligence one way or another so is a weird point to make.
Because they pay their workers less than the rest of the world so can compete for labor with a very large supply. The western world at least gives lip service to a living wage and living standards even if the follow through is frequently lacking.
...with sheer numbers of people. And how do they do that? By importing lots and lots of food because they can't grow enough food to feed those cheap workers. And the food comes from: western countries.
The Chinese are dependent on the western world and in a very basic way: for sustenance.