An echelon of trainer aircrafts takes part in a military parade to celebrate the 70th founding anniversary of the People's Republic of China (PRC) in Beijing, capital of China, Oct. 1, 2019. (Xinhua/Lu Boan)
An echelon of trainer aircrafts takes part in a military parade to celebrate the 70th founding anniversary of the People's Republic of China (PRC) in Beijing, capital of China, Oct. 1, 2019. (Xinhua/Lu Boan)
