Photo taken on April 30, 2010 shows the LED screen during the outdoor opening ceremony of the 2010 Shanghai World Expo at the Expo Cultural Center in Shanghai, east China, April 30, 2010.[Xinhua] 

Spectacular fireworks explode over the Huangpu River during the opening ceremony for the 2010 World Expo held in Shanghai, east China, April 30, 2010. [Xinhua] 

Spectacular fireworks explode over the Huangpu River during the opening ceremony for the 2010 World Expo held in Shanghai, east China, April 30, 2010. [Xinhua]