1. If an information error does occur, for the same ticket, one of the following items—surname, given name, and ID number—may be modified free of charge, and only once. For the ID number, a maximum of five digits may be modified. 2. For the same ticket, apart from surname, given name, and ID document number, other information such as document validity period, gender, nationality, issuing country, date of birth, etc., may be modified for any three items free of charge, and each item may be modified only once. 3. For infant tickets without a seat, passenger information may be modified free of charge, with each item modified only once. You may make the modification yourself through Spring Airlines' APP or mini-program (Service Center – Ticket Information Modification function). For detailed rules on passenger ticket information modification, please visit: https://flights.ch.com/other-provisions?id=390658c5f8544af888a5076793120fe5