If you make 10 million from cryptocurrency trading and want to transfer the money to a domestic bank account, this may be regarded as a huge amount of property of unknown origin, and may even constitute a crime. However, there are some legal ways to convert these funds into legal income.

One way is to withdraw USDT from the exchange to BiyaPay, a wallet with a legal license in the United States. In BiyaPay, you can exchange USDT for an equivalent amount of US dollars, and then withdraw the US dollars to Wise or OCBC Bank. Although there will be handling fees and exchange rate losses in this operation, these funds are legal. From Wise, you can transfer US dollars back to Alipay, WeChat or Bank of China, but there is an annual limit. OCBC Bank's 360 account can be directly withdrawn in China without the $50,000 limit.

Another way is to withdraw USDT to iFAST UK Bank through Kraken Exchange, which also has a legal license. This method is also legal, but it will also involve handling fees and exchange rate losses.

Please note that although these methods are legal, it is best to consult a professional legal advisor before operation to ensure that all steps comply with local laws and regulations. It should also be noted that any path to legalization will have certain costs, which is to ensure the security and legality of the funds.