Gansu
http://www.gsta.gov.cn
Lanzhou
http://www.huanghetour.com
Tianshui
http://www.tianshuitravel.com/
Dunhuang
http://www.dunhuangtour.com/en/
Gannan Tibetan Autonomous Prefecture
http://www.xblly.com/
Jiuquan
http://www.jqta.com/english/edefault.asp
Zhangye
http://www.jzytour.com/