![World's largest solar-powered plane heads for Nanjing(3/7)](http://www.ecns.cn/hd/2015/04/21/b6103fef3f1b4ba6ac94315de572abd6.jpg)
Solar Impulse 2 parks in a hangar of Jiangbei International Airport in Chongqing Municipality, southwest China, April 21, 2015. Solar Impulse 2, the world's largest solar-powered plane, left Chongqing Tuesday morning and headed for Nanjing, capital of east China's Jiangsu Province. (Photo: Xinhua/Tang Yi)