The photo taken on February 3, 2010 shows a corridor equipped with energy-saving LED lights in the 2010 World Expo Site in east China's Shanghai Municipality. More than 80% of Shanghai World Expo Site is lit with energy-saving LED lights to highlight the China's largest model district of solar cells application. About 60% to 70% of the carbon dioxide emission is to be set off as electric, super capacitor and hydrogen vehicles are put into use as well during the expo, according to experts. [Xinhua]