Unmanned devices displayed at Airshow China 2021

Editor：Wang Xinjuan Time：2021-09-30 14:52:35

Photo taken on Sept. 29, 2021 shows an unmanned helicopter displayed at the 13th China International Aviation and Aerospace Exhibition, or Airshow China 2021, in Zhuhai, south China's Guangdong Province. (Xinhua/Deng Hua)

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