Now these investments are all managed by three parties, and stock futures are all speculative. The three parties are you, the bank and the trading center. After the investor opens an account, he binds a bank card and entrusts the deposit to the bank. Banks are like third parties like Alipay, acting as notaries. This money will only change if you operate it, and no one else can move it. No problem.

This is no problem. This is the same as stock trading. Your bank card and trading account can only be linked, so as to save money. But the operation password and deposit password are independent, and others can't touch your money, so don't worry, the money that binds you is still on your card.