12306购票页面有“暗号”，都是什么意思？

Group 1 - The 2026 Spring Festival train tickets are now on sale, with specific keywords like "snow," "pet," "quiet," and "bed" indicating special services for certain train routes [1] - "Snow" indicates train services that provide "snow equipment convenience" starting from January 15, allowing passengers to carry snow gear with a service fee of 98 yuan per set [3] - "Pet" signifies trains that offer pet transportation services, allowing passengers to transport up to two healthy domestic pets, each weighing no more than 15 kg [5][6] Group 2 - "Exchange" refers to trains that allow ticket redemption using loyalty points, where travelers can earn points based on ticket price and redeem them once they reach 10,000 points [9] - Regular travelers earn 5 times the ticket price in points, while those aged 14-28 earn 10 times, and seniors over 60 earn 15 times [11] - "Quiet" indicates trains with "quiet carriages," providing a quieter travel environment by adjusting audio levels and encouraging quiet behavior among passengers [12][14] Group 3 - The "bed" feature allows online selection of sleeping berths, with priority given to passengers over 60 for lower berths [16] - Passengers can select their preferred sleeping arrangements by accessing the service through the designated train routes [18]