Must be a Ctrip travel credit card; In fact, if you are Ctrip's own card and you don't fill in the card number when filling out the application form, China Merchants will issue you a new Ctrip card number, so the two cards cannot be merged. If you fill it out, it will be on the credit card. If you are online user name or mobile phone registration, etc. And then ask the staff to help you think about it.