Driving route: about 130.5 kilometers
Starting point: Huating County
1. S304 drive 8.7 kilometers, about 290 meters after the left side of the Shizui River, go straight into the barley Laowanliang Tunnel
4) Along the barley Laowanliang Tunnel drive 350 meters, go straight into the S304
5) Along the S304 drive 18.1 kilometers, straight into the Guanshan Tunnel
2. Tianshui City, the city's internal driving program
1) along the Guanshan Tunnel Drive 2.8 kilometers, go straight into S304
2) Drive 96.5 kilometers along S304, turn left into S207
3) Drive 570 meters along S207, arrive at the end point (on the left side of the road)
End point: Yebao Township