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