The bank card has been bound when you open an account. Generally, account opening is directly bound to a third-party depository. When opening a stock account, you can open an account via mobile phone, visit your home, or open an account on weekends. There is no time and place limit for account opening. From Monday to Friday, the transaction time is from 9:00 am to 3:30 pm. Bank cards can be bound. If you use Agricultural Bank of China or China Construction Bank, the futures company's backend can handle it in one stop without going to the bank. If there is an online bank, you can also handle third-party depository services on your own at the online bank.