Technicians check plane at subsidiary of China Eastern Airline in NW China's Gansu

Technicians modify the parts of the engine at a subsidiary of China Eastern Airline in Lanzhou, northwest China's Gansu Province, Jan. 17, 2019. The Airbus A320, which has been in service for 12 years, is under repair and maintenance in preparation for the upcoming Chinese Lunar New Year. (Xinhua/Fan Peishen)