Where does Pingliang pass from Lanzhou to expressway?

Pingliang to expressway in Lanzhou needs to go through Liupanshan and Longde counties in Ningxia Hui Autonomous Region, Jingning county in Pingliang region, Huining county in Baiyin city, Dingxi region, Yuzhong county in Lanzhou city (Sanjiao city, Dingyuan and Heping), and finally get off at Donggang or Tianshui intersection. This expressway is about 330 kilometers, with eight or nine tunnels and good road conditions. The speed limit is 80 to 120 mph, which takes about 3 to 4 hours. I hope drivers and friends will pay attention to driving safety, go out happily and go home safely.