Photo taken on Aug. 2, 2015 shows a train running on the Qinghai-Tibet railway in southwest China's Tibet Autonomous Region. With picturesque scenery and abundant tourism resources, Tibet attracted over 15.53 million tourists in 2014 and its annual revenue from tourism increased 23 percent in 2014 to more than 20 billion yuan (3.1 billion U.S. dollars). (Xinhua/Chen Yichen)
