
A domestically-built Y-20 heavy transport aircraft is seen during the Chinese People's Liberation Army (PLA) Air Force Aviation Open Day in Changchun, capital city of northeast China's Jilin Province, Aug. 11, 2017. (Xinhua/Lin Hong)

A domestically-built Y-20 heavy transport aircraft is seen during the Chinese People's Liberation Army (PLA) Air Force Aviation Open Day in Changchun, capital city of northeast China's Jilin Province, Aug. 11, 2017. (Xinhua/Lin Hong)