1, the waiting time is different: the west entrance goes directly to the departure floor on the second floor, and you can stop. It is more convenient to go directly to the ticket gate for security check, and the waiting time is longer. There are more people waiting in line at the east entrance, and the waiting time is longer.

2. The ticket gates are different: the East Gate and the West Gate are on the first floor and the third floor respectively. There are 1 to 14 ticket gates on the first floor, near the east gate, and 15 to 18 ticket gates near the west gate.