Tourists ride camels to view the desert scenery at the Yueya Spring (Crescent Spring) scenic spot in the Mingsha Mountain Dunes in Dunhuang city, Northwest China’s Gansu province, Oct 2, 2014.[Photo/Xinhua]

Tourists ride camels to view the desert scenery at the Yueya Spring (Crescent Spring) scenic spot in the Mingsha Mountain Dunes in Dunhuang city, Northwest China’s Gansu province, Oct 2, 2014.[Photo/Xinhua]

Tourists ride camels to view the desert scenery at the Yueya Spring (Crescent Spring) scenic spot in the Mingsha Mountain Dunes in Dunhuang city, Northwest China’s Gansu province, Oct 2, 2014. [Photo/Xinhua]

Tourists ride camels to view the desert scenery at the Yueya Spring (Crescent Spring) scenic spot in the Mingsha Mountain Dunes in Dunhuang city, Northwest China’s Gansu province, Oct 2, 2014. [Photo/Xinhua]

Tourists ride camels to view the desert scenery at the Yueya Spring (Crescent Spring) scenic spot in the Mingsha Mountain Dunes in Dunhuang city, Northwest China’s Gansu province, Oct, 2014.[Photo/Xinhua]