Planes fly in formation during an aerobatics show in Siziwang Banner of Ulanqab, north China's Inner Mongolia Autonomous Region, Aug. 21, 2020. (Xinhua/Peng Yuan)

Parachutists perform during an aerobatics show in Siziwang Banner of Ulanqab, north China's Inner Mongolia Autonomous Region, Aug. 21, 2020. (Xinhua/Darhan)

Planes fly in formation during an aerobatics show in Siziwang Banner of Ulanqab, north China's Inner Mongolia Autonomous Region, Aug. 21, 2020. (Xinhua/Peng Yuan)

Helicopters perform during an aerobatics show in Siziwang Banner of Ulanqab, north China's Inner Mongolia Autonomous Region, Aug. 21, 2020. (Xinhua/Darhan)

Planes fly in formation during an aerobatics show in Siziwang Banner of Ulanqab, north China's Inner Mongolia Autonomous Region, Aug. 21, 2020. (Xinhua/Xu Qin)