A helicopter and two BMW cars perform during the 15th Aviation Expo China at Badaling Airport in Beijing, Sept 26, 2013. The expo, organized and sponsored by top China aviation authorities, is a biennial event, and this year it will be held from Sept 25 to 28. [Zou Hong / Asianewsphoto]
A boy poses for photos standing on a helicopter wing at the 15th Aviation Expo China at Badaling Airport in Beijing, Sept 26, 2013. [Zou Hong / Asianewsphoto]