Tianjin acrobats perform during the 2010 Expo Tianjin Week at the 2010 World Expo in Shanghai, east China, May 9, 2010. The five-day Tianjin week kicked off on Sunday. [Xinhua]

Tianjin actresses perform during the 2010 Expo Tianjin Week at the 2010 World Expo in Shanghai, east China, May 9, 2010. The five-day Tianjin week kicked off on Sunday. [Xinhua]