3. (Important) No cryptocurrency exchanges are allowed to offer currency-to-"cryptocurrency" exchange any longer, a.k.a. e.g. no CNY-to-Bitcoin or Bitcoin-to-CNY exchange allowed.
So the exchange scheme will be:
CNY->USD (or EUR)->BTC (bitcoin) and BTC (bitcoin)->USD (or EUR)->CNY
This was done on purpose, because a lot of capital was transferred from China to other countries.