Any bank that offers such service in China will sooner or later run into "banking problems". It is illegal and they will close it. Please see my above post. Trust me, you do not want to get involved. Chinese are well connected people and if they come to you, it means they want you to do something very illegal. Anything sightly against the law has already been tried with locals. They would not ask you, they know you cost more than the poor Chinese trying to get some money with something dubious.