Credit cards are useless and may not be activated directly. Credit cards can only be activated after calling the issuing bank hotline to verify their identity. As far as I know, if your credit card is handled through banking channels such as WeChat or Alipay, you can open the UnionPay Platinum Card and enter more credit card menus to activate your credit card. In addition, you can also bring your valid personal identification and credit card to the counter of the issuing bank to activate the credit card, or you can call the customer service phone of the issuing bank to activate the credit card.