Does the bank have any information tips after buying train tickets with CCB credit card?

There is no SMS reminder for CCB credit card refund merchants. Because the refund was initiated by the merchant, the CCB system could not send it by SMS. After the successful refund of ordinary merchants, you can check the credit card bill every 2-3 days, and there will be a refund record. The words "refund/return" or the date+merchant name will be stated in the transaction description. You can search "China Construction Bank" on WeChat, pay attention to and bind credit cards, and inquire about the unpaid refund records.