I can't. Under normal circumstances, after the main card is cancelled, the secondary card will also be cancelled jointly and cannot be used. After the main card is cancelled, the user's credit card account will also be cancelled. Without a credit card account, users can't continue to use the secondary card. The main credit card may not be activated, but in case of abnormal conditions, such as payment suspension, freezing, loss reporting, etc. , the secondary credit card will not be available.