Bus route: Yuntong 205 → Metro Line 2 → 122, the whole journey is about 19.0 km.

1. Take American Express 205 from the National Library and arrive at Xizhimenwai Station after three stops.

2. Walk about 460m to Xizhimen Station.

3. Take Metro Line 2 and arrive at Jianguomen Station after 8 stops (or take Metro Line 2).

4. Walk about 470 meters and arrive at Jianguomen South Station.

5. Take the 122 bus and arrive at the Cancer Hospital Station after three stops.

6. Walk about140m to the Baidu map of Panjiayuan.