Credit cards should be activated within the validity period after issuance. According to different banks, the validity period of credit cards will be different, generally between 3-5 years.

Credit cards can be opened at any time during the validity period. After the expiration date, some banks will automatically become invalid, while others will not. If you don't want to use this credit card or don't activate it, you'd better cancel it, because some special credit cards will charge an annual fee if they are not activated. For example, Pufa Credit Card Dream Card Series.