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Chinese President Xi Jinping (R), also general secretary of the Communist Party of China (CPC) Central Committee and chairman of the Central Military Commission, presents China's top science award medal to Liu Yongtan, an academician of the Chinese Academy of Sciences and the Chinese Academy of Engineering, during an annual ceremony to honor distinguished scientists, engineers, and research achievements at the Great Hall of the People in Beijing, capital of China, Jan. 8, 2019. Liu is from the Harbin Institute of Technology. (Xinhua/Xie Huanchi)