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High-tech expo begins in Beijing
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The 21st China Beijing International High-Tech Expo opened in Beijing, capital of China, May 17, 2018.
Xinhua丨Updated: May 18, 2018
People watch a underwater robot during the 21st China Beijing International High-Tech Expo in Beijing, capital of China, May 17, 2018. The four-day expo opened on Thursday.[Photo/Xinhua]