Medical personnels from the Third Military Medical University prepare to spray disinfector to prevent epidemic in a primary school in Lixian County, southwest China's Sichuan Province, on May 17, 2008. Soldiers of People's Liberation Army (PLA) rushed into quake-hit areas and conducted their rescue operation efficiently after the earthquake happened on Monday.

A medical personnel of the national earthquake emergency relief team sprays disinfector on trucks at their station in Beichuan County, southwest China's Sichuan Province, on May 17, 2008.