12306购票有新变化！

Group 1 - The core viewpoint of the article is the enhancement of group ticket purchasing services by the railway 12306 customer service center, making it more convenient for group travelers [2][5] - Starting from today, the railway 12306 customer service center has introduced a telephone service for group ticket purchases, available for groups of 20 or more traveling on the same train and date [5] - The maximum number of tickets that can be purchased in a single order has been increased from 9 to 19, and the number of passengers that can be added to a single 12306 account has been raised from 15 to 30 [5]