Officials greet over 200 bicycle enthusiasts to start their low-carbon journeys at the opening ceremony of "Low-carbon Tourism Starts from Northeast Asia" in Jiaozuo, central China's Henan Province on Oct.24, 2010. [China.com.cn]

  Bicyclists depart from the opening ceremony of "Low-carbon Tourism Starts from Northeast Asia" in Jiaozuo, central China's Henan Province.Oct.24, 2010. [China.com.cn]