No borrowing. Because if you open an account, no one can predict what trouble will happen in the future, and you can't guarantee it with your mouth.

Of course, you have to open an account with your own ID card, but you can't use someone else's. If not, don't open it. This is common sense. Just refuse. Afraid of embarrassment, I thought of another way to refuse. Anyway, I just don't borrow it.

Futures is a margin system, and everything you worry about is possible. Also, if he uses this account to do something that violates the rules of the exchange, he will also blame you. Although unlikely, it will exist.