Tourists view a model of karez wells, which convey water from deep underground to the surface, at a park in Turpan, northwest China's Xinjiang Uygur Autonomous Region, Sept. 19, 2018. Xinjiang saw more than 105 million tourists in the first eight months of 2018, up 40.93 percent year on year, according to the Xinjiang tourism development commission. (Xinhua/Zhao Ge)