Decades. Also passports. Wealthy Chinese are known to buy significant investor (which is not that significant) citizenship in several countries, not to move the

Decades. Also passports. Wealthy Chinese are known to buy significant investor (which is not that significant) citizenship in several countries, not to move there but have an exit option. Also to be fair I think a fair portion of this is not fear of China changing the rules, often if the wealth was gained corruptly this is a way to protect it and move away from repercussion.