Mainly the place of origin, right? If you are a student outside the province, it is recommended to write the name of the province.

If the train ticket is reduced, the home location and bus interval. If there is a direct train from your home location to Xi 'an, write down the city or county of your home location directly.

If there is no direct flight to Xi in your city or county. If you need to transfer, it is recommended to write directly. You can buy a connecting ticket for a train ticket, and you can buy a student ticket if you transfer midway.