There are different penalties depending on the amount of debt you owe on your credit card. Banks and law firms have connections with China Unicom. If you do not owe money on your credit card, you will receive a notice from a lawyer and the possibility of litigation. In the end, Serious offenses will result in jail time.
The original intention of a bank to apply for a credit card is to obtain interest and principal. When applying for a credit card, you should also act according to your ability and do not spend blindly.