By LIU YUKUN in Beijing and HU DONGMEI in Yinchuan |
China Daily |
Updated: 2021-08-21 07:45
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A staff member of China Telecom introduces an intelligent helmet at the fifth China-Arab States Expo in Yinchuan, Northwest China's Ningxia Hui autonomous region, Aug 20, 2021. [Photo/Xinhua]
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