Frontier defense soldiers from south China's Guangdong Province help residents demolish ruined houses at Guanzhuang Village of Yonghe, a remote town in Anxian County, southwest China's Sichuan Province, May 21, 2008. Guangdong frontier defense soldiers on Wednesday arrived in Yonghe and Jiepai, remote towns in Anxian County, to carry out rescue work including search for survivors, epidemic prevention and help residents in their reconstruction.