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Liu Yongtan (R, front) and Qian Qihu (L, front) attend an annual ceremony to honor distinguished scientists, engineers and research in Beijing, capital of China, Jan. 8, 2019. (Xinhua/Ding Lin)
Liu Yongtan (R, front) and Qian Qihu (L, front) attend an annual ceremony to honor distinguished scientists, engineers and research in Beijing, capital of China, Jan. 8, 2019. (Xinhua/Ding Lin)