A ground crew member assigned to an aviation brigade of the air force under the PLA Southern Theater Command checks the ammunitions in an aircraft hangar prior to a live-fire flight training exercise on March 19, 2020. (eng.chinamil.com.cn/Photo by Wu Gaoming)

J-10 fighter jets attached to an aviation brigade of the air force under the PLA Southern Theater Command taxi out of the aircraft shelters successively onto the flightline for a live-fire flight training exercise on March 19, 2020. (eng.chinamil.com.cn/Photo by Gu Haodong)

J-10 fighter jets attached to an aviation brigade of the air force under the PLA Southern Theater Command taxi out of the aircraft shelters successively onto the flightline for a live-fire flight training exercise on March 19, 2020. (eng.chinamil.com.cn/Photo by Gu Haodong)