Aerial photo taken on April 16, 2019 shows the view of Yangquan, north China's Shanxi Province. Yangquan has been transforming from a coal-dependent city to a city applying new technologies of Big Data and information services to various aspects of social life and developments. From harboring Baidu's cloud computing center, to taking advantages of various apps and platforms to collect citizen's concerns, supply public information, and monitor production safety, etc., Yangquan has become a new smart city featuring artificial intelligence. (Xinhua/Yang Chenguang)