Passengers walk off the plane after the first flight from Qingdao to Dunhuang arrived at Dunhuang Airport in Dunhuang, northwest China's Gansu Province, July 16, 2015. An airline connecting China's east coastal city Qingdao and the historical Dunhuang City was launched on Thursday. The round-trip flight will fly three times a week. (Xinhua/Zhang Xiaoliang)