An air echelon of trainer planes takes part in a military parade during the celebrations marking the 70th founding anniversary of the People's Republic of China (PRC) in Beijing, capital of China, Oct. 1, 2019. (Xinhua/Shen Bohan)
An air echelon of trainer planes takes part in a military parade during the celebrations marking the 70th founding anniversary of the People's Republic of China (PRC) in Beijing, capital of China, Oct. 1, 2019. (Xinhua/Shen Bohan)
