12306 apologizes for releasing tickets for some trains ahead of schedule, and will further improve the system.

On February 11th, the official customer service of 12306 stated that there was indeed a problem of tickets being released early for some trains, with the situation mainly concentrated on additional trains. They apologized for the inconvenience to users and have already provided feedback on this issue. They will continue to work on improving the system and optimizing the ticket buying experience.