Attractions in Dunhuang City

Hello,

We will arrive DH railway station at the morning, and we want to see Yadan Geological Park, mingshashan desert, Yumenguan Pass. I think we should start from Yumenguang Pass, then Yadan Geological Park and come back to mingshashan at the evening. And see the desert at second day. but we couldn't be sure about our route. Pls tell me the best route that we have to take and the public transportation on it. Thank you so much.