card opening is also called activation, which means that the card can be used for credit card consumption. If the card is not opened, it means that the card cannot be used. There is an annual fee for not opening a card. In other words, as long as the bank issues a credit card, if you don't use it, you have to pay an annual fee.

generally, many banks now stipulate that the annual fee can be waived if the card is fully opened, which varies from bank to bank.