Actualy i dont believe this kind of feed news thats china would closed all there rigs or mining in cryptocurrency investment because 70% of there economic progress comes from the crypto mining and they are done become more progressive  because of cryptocurrency help,maybe this  things only a denial strategy in order to no one foreign exchange competitive them in terms of crypto mining, i thinks china would have a great plan to manipulizing have there own  glovall rig in order to get all more percentage in rig or mining investment rather than other foreign miners.