A staff member uses tablet computer to demonstrate a product based on AR (augmented reality) technology at the Isoftstone big data industry center in Yuquan District of Hohhot, capital of north China's Inner Mongolia Autonomous Region, Aug. 1, 2017. Isoftstone big data industry center was put into operation on Tuesday in Yuquan District to promote the construction of "Smart City" and "Smart tourism". (Xinhua/Ding Genhou)
