Liu Yandong attends opening ceremony of National Science and Technology Week

Chinese Vice Premier Liu Yandong (2nd L) declares the opening of the 2017 National Science and Technology Week in Beijing, China, May 20, 2017. Guo Jinlong (2nd R), a member of the Political Bureau of the Communist Party of China (CPC) Central Committee and secretary of the CPC Beijing Municipal Committee, also attended the event. (Xinhua/Yan Yan)