People look at a sand table of city transportation at the first Smart China Expo in southwest China's Chongqing Municipality, Aug. 23, 2018. With "Smart Technology: Empowering Economy, Enriching Life" as its theme, the first Smart China Expo runs from Thursday to Saturday focusing on new products, technologies and modes in the global development of big data and intelligent industries. The expo has five display zones with a total area of 186,000 square meters, attracting more than 500 domestic and international companies as exhibitors and more than 100 foreign guests from 28 countries and regions. (Xinhua/Wang Quanchao)