Workers are seen outside the Shanghai Corporate Pavilion on lighting trial at the Expo Park in Shanghai, east China, March 26, 2010. The Expo Park will be put into trial operation in the end of April. (Xinhua)
Workers are seen outside the Shanghai Corporate Pavilion on lighting trial at the Expo Park in Shanghai, east China, March 26, 2010. The Expo Park will be put into trial operation in the end of April. (Xinhua)