Which bus should I take from Grand Park Hotel in the city to Xian Airport?

You are suggested to walk north around 1km to get to Bell Tower first. Then take shuttle bus Bell Tower Line to the airport directly. The operating hours of this bus line are from 07:00 to 23:00. The duration is around 1 hour. You need to arrive at the airport at least 2 hours in advance before the departure.

Thank you! :)