At the end of this month, I will go to Qinghai, Gansu. I am a little depressed now, because I am very confused about the line. Please help me. 1. At the end of May, what can Menyuan see? Because one route is Xining-Qinghai Lake-Menyuan-Zhangye. 2. Is it necessary to charter a car on the front line of Qinghai Lake? I want to see Bird Island and Chaka Salt Lake. It is possible to stay for one night. How to arrange the line? 3. How long does it take from Delingha to Dunhuang? Thanks