Sichuan earthquake survivor Xu Linghong does eye exercises at a primary school in Mianyang, Sichuan Province March 30, 2009. Xu, 7, was rescued from a collapsed building but lost her right arm and her mother died in the earthquake. China will mark the one-year anniversary of the Sichuan earthquake on May 12, 2009. Picture taken March 30, 2009. REUTERS/Bo Bor (CHINA ANNIVERSARY DISASTER SOCIETY)