三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

The "Sun Valley" lighting system in the Axis of World Expo 2010 began its testing program in Pudong Section of the Expo Site in Shanghai, August 17, 2009. Six cone-shaped "Sun Valleys" made their debut recently in the Expo Axis. The Expo Axis is a large, integrated commercial and traffic complex providing catering, entertainment, and exhibition services. It also serves as the main entrance to the Expo site and is connected with four major pavilions through an elevated platform and underground passages. [Xinhua]