What do you mean by online mining? Is it legal?

Legal analysis: it is not illegal to mine virtual currency on the computer now, but it is illegal to steal electricity and mine. Virtual currency is defined as a special Internet commodity in China, and netizens can buy and sell it freely at their own risk, but it denies its monetary attribute. Of course, mining does not exist in all virtual currencies, and some currencies just don't need mining.

Legal basis: Article 21 of the Regulations on the Administration of Renminbi in People's Republic of China (PRC) stipulates that the suspension of the circulation of some versions of Renminbi shall be reported to the State Council for approval and announced by the People's Bank of China.

Financial institutions handling RMB deposit and withdrawal business shall, in accordance with the provisions of the People's Bank of China, exchange RMB that has ceased to circulate and deposit it in the local People's Bank of China.

The People's Bank of China shall not pay RMB that has stopped circulating to financial institutions, and financial institutions shall not pay RMB that has stopped circulating.