Medical workers treat 60-year-old Hu Zishou of the Bai ethnic group in Ninglang County, southwest China's Yunnan Province, June 25, 2012. After the earthquake which struck the border of Yunnan and Sichuan provinces on Sunday, medical staff members of the health center in Yongning Town of Ninglang County immediately started the work to treat the injured people in the quake. The magnitude-5.7 quake killed three people in Ninglang County and another one in Sichuan's Yanyuan County, and injured over 100 others. [Xinhua]