1, China International Airlines: 95583.
2. China Eastern Airlines: 95530.
3. China Southern Airlines: 95539.
Infrastructure:
Airports can be divided into "unrestricted areas" and "restricted areas" (controlled areas). Unrestricted areas include parking lots, bus stops, oil storage areas and off-road roads, and restricted areas include all places where aircraft enter, including runways, taxiways, aprons and oil storage areas. Most airports will be in the middle between unrestricted and restricted areas.
Do strict control. Passengers entering the restricted area must go through the terminal, where they can buy air tickets, undergo security check, check in or pick up their luggage, and board the plane through the boarding gate.