an empty card can refer to an empty savings account card or an empty credit card account card. An empty savings card generally refers to a card that has no money in the account and has not been used for a long time.
if the card is not used for a long time, the bank will cancel the corresponding account, one is to reduce the cost of account management, the other is to protect the rights and interests of the account owner and prevent the restricted account from being stolen by others.