Bus route: Airport Line → Metro Line 2 → Metro Line 4 → Metro Line 9, the whole journey is about 48.5 kilometers.

1. Walk about 320 meters from Daoxiang Village (airport 1 store) and arrive at t 3 terminal station.

2. Take the airport line, pass three stops and arrive at Dongzhimen Station.

3. Walk about 5 10 meters to Dongzhimen Station.

4. Take Metro Line 2, pass 5 stops and arrive at Xizhimen Station.

5. Take Daxing Line of Metro Line 4, pass 2 stops and arrive at National Library Station.

6. Take Metro Line 9, pass 5 stops and arrive at Liuliqiao East Station.