Every credit card has an expiration date. If the credit card is not activated within the validity period, it will be regarded as unopened and will be invalid after the validity period. After the cancellation, the credit card will not be available. But the cancellation of credit card is not the same as the cancellation of credit card. Invalidation only means that the credit card is invalid, and it does not mean that the credit card account is closed or cancelled. Even if you don't use a credit card, you still have to go through the formalities of closing the account to ensure that the account is completely closed.