There's also the fact that proper communist china still lingers in the collective consciousness like IE6 does in webdesign. There used to be the communist part

There's also the fact that proper communist china still lingers in the collective consciousness like IE6 does in webdesign. There used to be the communist party doctrine that individuals with possible grudges against the party within 3 generations would not be granted party membership. Some people that have money now would still count for this rule, which is another reason they might want some cash abroad.