there's no need to panic when one door closes, another doors open, this is the real case scenario when there is crisis there is a lot of opportunities to offer, if ever China shutting down its bitcoin mining farm and its bitcoin exchanges, there are other countries that are viable for mining farm like Russia and Iceland where electricity cost was very low and same goes to bitcoin exchanges. Japan, Korea, and other countries can take over the operation. As long as there is market adaptability, the show must go on.