A girl from northwest China's quake-hit Yushu Prefecture plays piano at the youth activity center of Tianjin, north China, May 30, 2010. A total of 14 students from the quake-hit Yushu Prefecture of northwest China's Qinghai Province were invited to visit Tianjin to celebrate the International Children's Day. They will tour Tianjin and make friends with local families. (Xinhua/Liu Dongyue)

Daixi Qiuzhan (R) from northwest China's quake-hit Yushu Prefecture draws picutre with Wang Shiran of Tianjin at the youth activity center of Tianjin, north China, May 30, 2010. A total of 14 students from the quake-hit Yushu Prefecture of northwest China's Qinghai Province were invited to visit Tianjin to celebrate the International Children's Day. They will tour Tianjin and make friends with local families. (Xinhua/Liu Dongyue)