Moreover, the holiday time of each school is almost the same, which leads to the similar schedule for all students to go home, so it is hard to get a ticket and it is difficult for college students to buy a ticket. It is not easy to get tickets at such a rush hour, and it takes luck.
I remember when I was studying. Whenever I have a holiday, if I want to go home, I will buy a train ticket one or two months in advance. Otherwise I really can't buy it. Get up at six o'clock every morning and wait for the tickets to be released. One semester, I persisted for a week before I got a station ticket. It's really hard to get tickets.
It is difficult for college students to buy tickets, mainly because of the existence of peak hours.