For passengers who need to change or return their tickets, they can change the tickets or get their fund through 12306.cn or the ticketoffice at the station.
对于需要改签或退票的乘客，他们可以在12306平台上或在车站售票处就能改签或退款。
2
At the ticketoffice.
在售票处。
3
You can go to that ticketoffice to buy your ticket.