Sub-accounts are multiple subsidiary accounts opened in the same card, which manage different functions such as current account, fixed account, local currency and foreign currency, and are affiliated to the main account.

The bank card sub-account is an account attached to the user's bank card main account: multi-currency (RMB, USD, HKD, GBP, EUR, etc.) account. ) and various deposits (demand, lump-sum deposit and withdrawal, lump-sum deposit and withdrawal, deposit and withdrawal, notice deposit, etc.). ) can be opened in a bank card, realizing the function of multiple accounts for one account, which is convenient for the customer's main account to manage each sub-account.

Reference sub-account-Baidu Encyclopedia