April 10, 2018 -- Zhang Yuyan (2nd L), director of the Institute of World Economics and Politics at the Chinese Academy of Social Sciences, attends a press conference of the BFA Annual Conference 2018 in Boao, south China's Hainan Province, April 8, 2018. (Xinhua/Xing Guangli)

By: Liu Jie and Cheng Yunjie