It is not illegal for individuals to buy and sell Bitcoin. When buying and selling Bitcoin and USDT, you will not be arrested for buying USDT, and you will not be arrested for selling USDT.
The key lies in the use of bank cards to receive payments during the selling operation. If the money received by the bank card is black money (funds involved in the case), it will involve illegal issues. At present, there are no laws and regulations that clearly state that buying and selling Bitcoin is illegal. The "9.24 Announcement" only reminds everyone that buying and selling digital currencies is not protected by law, and you are responsible for your own profits and losses.
The act of selling coins with a bank card is not illegal in itself, but if you receive black money, once the police trace it, it will be more troublesome if you can't explain the source of the funds. Therefore, whether it is illegal or not mainly depends on whether the funds are clean when using a bank card to receive payments. Normal digital currency trading is not illegal. If you accidentally become an innocent victim, as long as you can find a lawyer or prove your innocence, you will lose a little money at most, and you will not face serious consequences such as imprisonment.
In addition, I recently learned that Ethereum puppies seem to have great potential, and Musk has also mentioned it in his tweets. If you are interested, you can pay attention to it.