Basically the only way to convert Yuan to/from Bitcoin now is through a Chinese bank. Both the bank and the exchange will want your ID.
What do you mean exactly by "evading capital controls and State restrictions"?
What do you mean exactly by "evading capital controls and State restrictions"?
There are many miners in China. The Chinese could buy or trade from them even if all the exchanges closed.
How many coins are being mined these days? At the price they would fetch outside China, would they be enough for significant evasion?
I don't think that those coins would be easy or safe to get. How would the evaders contact the miners and pay them? Big miners have large installations and huge electricity bills, they cannot easily hide from the government.