Chinese troops participating in the "Peace Mission 2021" military exercise arrive by the Y-20 transport aircraft at a military airport in Orenburg, Russia, Sept. 10, 2021. All Chinese troops participating in the "Peace Mission 2021," a counter-terrorism military exercise for Shanghai Cooperation Organization (SCO) member states, arrived at the training range in Orenburg, Russia on Friday. (Photo by Liu Dan/Xinhua)

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