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Yang Chen-ning, a Nobel prize-winning physicist, listens to a question raised by a student at the opening ceremony of the first CAS-Leopoldina Joint Conference in Beijing, capital of China, Sept. 9, 2019. (Xinhua/Jin Liwang)
Portraits of Sept. 2019
Source: Xinhua| 2019-09-27 15:15:13|Editor: huaxia