Luxembourg's Prime Minister Xavier Bettel (C), who is paying an official visit to China, visits the Mutianyu section of the Great Wall in Beijing, capital of China, June 11, 2017. (Xinhua/Jin Liangkuai)
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Luxembourg's Prime Minister Xavier Bettel (C), who is paying an official visit to China, visits the Mutianyu section of the Great Wall in Beijing, capital of China, June 11, 2017. (Xinhua/Jin Liangkuai)
