The first ARJ21 aircraft Genghis Khan Airlines received from the Commercial Aircraft Corp. of China (COMAC) takes off from Dachang Airbase in east China's Shanghai, Feb. 22, 2019. The delivery marks the beginning of China's indigenously developed jetliners' scale operation. The ARJ21 took off from Shanghai heading for Hohhot Baita International Airport in north China's Inner Mongolia Autonomous Region on Thursday. (Xinhua/Ding Ting)