A tourist buys engraving works in Dunhuang, northwest China's Gansu Province, April 30, 2012. As tourism industry booms in Dunhuang, more than 500 folk artists have been attracted to develop their businesses in Dunhuang, which is well known for its Mogao Caves [Caves of 1,000 Buddhas], Crescent Lake and Mingsha Mountain. [Xinhua/Gao Jianjun]