Jack Ma (L), founder and chairman of China's e-commerce giant Alibaba Group, and WTO Director-General Roberto Azevedo attend a plenary session on E Commerce during the 48th annual meeting of the World Economic Forum (WEF) in Davos, Switzerland, Jan. 24, 2018. The 48th World Economic Forum (WEF) Annual Meeting opened Tuesday in Davos. (Xinhua/Xu Jinquan)