This is a very important part to understanding how the People's Republic of China is indeed as communist as ever. Many look at all the rich people and "private" companies making billions and quickly assume it's a communist country in name only.
But "your" money, "your" property is only as good as your allegiance to the party. The state is letting you "have" it, but ultimately it's theirs. It's only yours if you manage to smuggle it out to the US.