I am not sure with this but the chinese government has the possibility to did this and they are watching until now. but now, I think not just china that want to make a big money but the other country wants too and they have their chance. and if the price still increases, then many people will make a lot of money and the government will have their own money too. but I don't think that the ban from china will give effect for bitcoin price especially now, many people from other country know that bitcoin will increase more.