Dunhuang City in Gansu Province boasts the tourist sites of the Mingsha Mountain, the Yueya Spring and the Mogao Grottoes. The Yueya Spring, also known as the Crescent Moon Spring, is surrounded by the Mingsha Mountains. The Yueya Spring has been a scenic wonder for a long time and is reputed to be the "First Spring in Sand". The Mogao Grottoes are one of three best noted grottoes in China and also contain the largest, best preserved and richest treasure house of Buddhist art in the whole world. The first Silk Road (Dunhuang) International Cultural Expo will kick off in Dunhuang on September 20. [Photo/Xinhua]