Students from quake-hit Yushu County of northwest China's Qinghai Province visit the Qatar Pavilion at the World Expo Park in Shanghai, east China, Sept. 15, 2010. A total of 30 students of two hope schools in quake-hit Yushu County were invited by Unilever Co. to visit the 2010 World Expo on Wednesday. [Ren Zhenglai/Xinhua]