Then from Dunhuang to Jiayuguan, train and car can be, not very far, not many attractions, but after all, many of the border poets have come to the Great Wall, the first pier is not just a name, there is also a museum, the key is that it is at the foot of the Qilian Mountains, the scenery is nothing to say.
Zhangye bar, I personally think can go can not go, the seven-color Danxia is not what time can see clearly, the beauty of sometimes really depends on luck.
Then go to Lanzhou, from Jiayuguan to Lanzhou, the train is exactly one night, I remember I was in the car met a team of high school students to Lanzhou to participate in the game, a night of lively not.
Lanzhou is a city where the pace of life is quite slow, in the morning to eat the most authentic Ma Zilu beef noodles, in the morning to go to Wuquanshan to stroll around, to see the grandparents square dance, in the afternoon on the White Pagoda Mountain to stroll around, evening along the Yellow River walk, the night to go to the snack street to eat a pain. This day is really comfortable.
Then go directly to Xining, take the train not long to arrive, close to the hard. I'm sure you'll feel a lot more chilled out when you get to Xining, and I'm sure you won't be able to run away from the food, so I'm not going to talk about it too much, but you can go to the Ta'er Temple and have a look around.
And then go to Qinghai Lake, then, it is recommended to charter a car to play, after all, so big a lake, you can not walk around, just along the lake are basically local Tibetans circled, but one person is just a few dollars, of course, it is not necessarily have to dip a little bit of water, the beauty of the scenery will be enough to see. Not chartered, from Xining should have a car directly to Erlang sword, where is the most mature attractions developed, but certainly people, so I still recommend a car, and then Chaka Salt Lake, from Qinghai Lake chartered to go, or from Xining bus can be, the traffic may be considered a big problem, so a lot of people are driving to Qinghai, but the transportation is developed in the place of which there is so much beautiful scenery.
There are a lot of other things, the main just say so a few it, also able to play some days.
How to go back, it is never a problem.
Accommodation I would recommend an aparthotel, one of those in a neighborhood, where you can cook your own food and be comfortable.
The trip I do not recommend too tight, because the altitude a little higher, the climate did not adapt to, a sick how to play are not painful. Bring a few pieces of thick clothing, pay attention to rest, relaxation, generally will not have any serious high reflex.