In this Week in Photos, a Long March 7 rocket carrying China’s first cargo spacecraft, the Tianzhou-1, blasts off at the Wenchang Space Launch Center in Hainan province, students at Changchun Guanghua University in Jilin province celebrate Earth Day by constructing a map of the world from 300,000 plastic bottle caps, and visitors at the Shanghai Auto Show check out some of the country’s most innovative new vehicles.