Before making a deposit, you need to open an account with a brokerage company. There are three ways to open an account with a Chinese mainland ID card. You only need to prepare a mainland bank card for authentication. Open an account through a Hong Kong bank account. In this way, you need to use a Hong Kong bank account to transfer money online to Futu or mail a check to open an account. The currencies supported by Futu US stock deposit are: Hong Kong dollars, US dollars and other bank accounts supported by Futu US stock deposit: Hong Kong account, Taiwan, Hong Kong and Macao account, American account and other countries in offshore account.