Not sure if you're being sarcastic but just incase.. Exchanges are not banned. They are being regulated with KYC/AML for customers. They also need to register with the telecom authority.
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This is what I got from using google translate on the source[0]:
>"Notice" requirement , as the main trading platform Bitcoin Bitcoin Internet sites , should be based on the "PRC Telecommunications Regulations " and " Internet Information Services" , shall be filed in the telecommunications regulatory agencies .