If you decide not to use it any more, you'd better inform China Construction Bank one month in advance.

China Construction Bank will send a card replacement notice to the cardholder before the credit card expires. For credit cards that are no longer used after expiration, the cardholder can sign the receipt of the card that has not been changed and send it back to the bank within the specified time, and the bank will stop issuing new cards. In addition, for cardholders who are going to send back the receipt without changing their cards, don't send the credit card in the receipt. In the future, they must show their credit cards when they cancel their cards.