Jack Ma (L), executive chairman of e-commerce giant Alibaba, holds a dialogue with Elon Musk, CEO of U.S. electric carmaker Tesla Inc., at the opening ceremony of the 2019 World Artificial Intelligence Conference (WAIC) in east China's Shanghai, Aug. 29, 2019. The 2019 World Artificial Intelligence Conference (WAIC) is being held in China's economic hub Shanghai from Thursday to Saturday in a bid to boost AI cooperation and innovation globally. With the theme of "Intelligent Connectivity, Infinite Possibilities," this year's event will focus on AI-enabled high-quality development to cope with the common problems in human development and to create a better life for mankind. (Xinhua/Ding Ting)