Are you seriously suggesting that Chinese students are all vetted by the government to make sure they are Pro-Communist and Anti-Democratic? AND they are all from the "ruling class".
wow. I don't even...
wow. I don't even...
If you are the son/daughter of a semi-high ranking CCP member the government will heavily vet you (assets, study program, where you intend to go). This is because of the "naked official" problem where corrupt members send their child out and then transfer illegitimate assets/cash out to the foreign country.
But your average chinese exchange student just has middle class parents who have just sunk their life savings into securing a better future for their child... that's it.