A simulated reactor described as an "artificial sun" to showcase its progress in contribution to the cutting-edge research on nuclear fusion is presented in China Pavilion of the 2017 World Expo in Astana, Kazakhstan, on June 10, 2017. The China Pavilion of the 2017 World Expo opened on Saturday in the Kazakh capital of Astana, which highlights China's achievements in developing, utilizing and protecting new energy. (Xinhua/Lu Jinbo)
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