There's generally more variation inside a large group than between groups based on broad categories, like nationality. You can find good people in China. The re

There's generally more variation inside a large group than between groups based on broad categories, like nationality. You can find good people in China. The real question is how common the excellent people are versus the bad actors. Both groups will comprise a minority, and the environment will affect how easy it is for you to find them, and for them to find you.