Deng Yun checks undercarriage of an aircraft at the Chagan Lake airport in Songyuan, northeast China's Jilin Province, July 17, 2018. Deng was born in 1991. She is an aircraft maintenance technician of an aviation academy in Jilin. The young female engineer and other nine colleagues are in charge of training plane maintenance at the airport. To ensure the flight safety, they need to check more than 100 items before a plane takes off. (Xinhua/Zhang Nan)