Starting point: Zhang Fang.
1. Drive 300 meters east from the starting point, go to Dashiwo/Fangshan Chengguan, and go straight into Fang Yi Road.
2. Drive along Fang Yi Road for 3.3km and turn left on the ramp.
3. Drive along the ramp 1.0km and go straight into Beijing-Kunming Expressway.
4. Drive along the Beijing-Kunming Expressway for 34.9 kilometers, exit at Dajian Road/Yanshan/Liangxiang, turn right slightly and get on the ramp.
5. Drive along the ramp for 530 meters and turn left into the road.
6. Drive along a large road for 3.4 kilometers and turn right into X009.
7. Drive along X009 for 2. 1km and reach the destination (on the right side of the road).
End point: Beijing Yanshan Xinfeng Engineering Company ...