All pre-authorized businesses shall be notified in advance. If there is no explanation on the webpage, it is a formal transaction and the money is gone; If there is an explanation, it means that you are not paying attention, which means that your money has been temporarily frozen (equivalent to the deposit) and your consumption quota has been reduced accordingly-under normal circumstances, regular websites will indicate the words "pre-authorization" in your reservation record. As long as there is evidence that you have received the plane ticket and officially boarded the plane, the money will be taken away without bank confirmation; Otherwise, the money will be thawed after 1 month.