1, you can choose your own seat when booking a plane ticket. When you need to change your boarding pass at the airport, you can tell the ground crew your seat requirements.

In addition, there is a self-service machine in the airport, which you can operate and choose.

3. Pre-authorized booking of air tickets on Ctrip with China Merchants Bank credit card is equivalent to paying the air ticket deposit. Before entering the account, pre-authorization will give him an amount that can be deducted, which will be temporarily frozen. The transaction type shown on the credit card signing form is generally "consumer sales". Of course, other types include pre-authorization, which is carried out with your card and generally does not require signature. If you must sign it, you can sign it on the back, but you must not. After formal signature, it will be recorded in the account, and it should be signed at the time of settlement. After the account is settled, the pre-authorization will be cancelled. If you have any questions in use, please call the customer service hotline of the issuing bank immediately and select the seat you need.