Helicopters participate in round-the-clock flight tasks


Multi-type transport and attack helicopters attached to an army aviation brigade under the PLA 81st Group Army lift off successively for a round-the-clock flight training task in highly frozen region in late December, 2019. (eng.chinamil.com.cn/Photo by Yu Lei, Lu Zhenbao and Feng Jingyu)

Source:China Military Online
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