A KJ-500 airborne early warning (AEW) aircraft attached to a naval aviation unit under the PLA Northern Theater Command taxis onto the flightline in preparation for a round-the-clock flight training exercise in late December, 2020.Photo:China Military

A KJ-200 airborne early warning (AEW) aircraft attached to a naval aviation unit under the PLA Northern Theater Command taxis on the flightline as another AEW aircraft takes off during a round-the-clock flight training exercise in late December, 2020.Photo:China Military

A reconnaissance plane attached to a naval aviation unit under the PLA Northern Theater Command prepares to taxi down the runway during a round-the-clock flight training exercise in late December, 2020.Photo:China Military

A reconnaissance plane attached to a naval aviation unit under the PLA Northern Theater Command prepares to taxi down the runway during a round-the-clock flight training exercise in late December, 2020.Photo:China Military