This is just capital controls. A common problem in most 3rd world countries. Unfortunately bypassing them requires a special relationship with a local bank or f

This is just capital controls. A common problem in most 3rd world countries. Unfortunately bypassing them requires a special relationship with a local bank or financial institution which maybe able to give you instant transfer outwards via prior understanding. But they will probably demand some foreign exchange as collateral. If it makes you feel any better, I don't think you can launch such a service even in China.