A couple cycle on street after holding an environmentally-friendly wedding in Shanghai on February 1, 2010. The couple transported their guests in 18 bikes provided by Shanghai Minhang district government for free. Sun Jun, a migrant worker from Wuhu in east China's Anhui province, and his bride's big day aims to promote the idea of green Expo and low-carbon lifestyle. The red tag on each bike reads: "We are married." [Photo/CFP]