The Sky Wing Air Demonstration Team performs in the sky during the PLA Air Force Aviation Open Day in Changchun, capital city of northeast China's Jilin Province, Sept. 2, 2016. The open day aims to demonstrate the achievements of Chinese People's Liberation Army (PLA) air force and enhance the public awareness of aerospace safety. Some equipments of the PLA air force will be open to the public for the first time. (Xinhua/Zhang Nan)
