A model of a C919 airliner is seen at the booth of Commercial Aircraft Corp of China (COMAC) during the 52nd International Paris Air and Space Show in Le Bourget near Paris, France, on June 19, 2017. The 52nd International Paris Air and Space Show kicked off on Monday to showcase the cutting-edge technology of today and the future of the air and space industry. (Xinhua/Chen Yichen)
