"The subject wants to ask why the CCB card suddenly became a return visit account?" The sudden change of CCB card into a return visit account means that some operations of the account will be restricted and need additional authorization or audit to ensure the security and legality of the account funds. The callback account of CCB refers to a service set up by the bank to ensure the safety of customers' funds. When a customer handles some business (such as changing password, modifying user information, important business, etc.). In CCB, the bank will confirm the wishes of customers or understand their opinions and needs by calling back to ensure the safety of account funds. For the sake of risk management and safety, the Bank conducts additional audit and management on specific accounts. When a bank sets an account as a "return visit account", it is a normal verification procedure to ensure the authenticity and accuracy of account information and identity information.