Hong Kong has own regulation laws, thats why offshore banking is possible there. They have made a contract with the mainland china and is a autonom place with own regulated laws until 2055 ( till there the offshore laws wont change also the company registrations )
so i dont think its affected
This indeed should be the case. HK is a world financial centre because of its independence from Chinese regulation. The Chinese government would be very unlikely to put that reputation at risk over crypto currencies.