Policemen investigate at an explosion site in Kunming, capital of southwest China's Yunnan Province, July 21, 2008. The dead were identified as Wang Dezhi, 30, a woman from Mouding in Chuxiong, Yunnan Province, and Chen Shifei, 26, a man from the province's Lijiang Educational Science College in Dayan Town, according to sources with the Yunnan Provincial Bureau of Public Security. [Xinhua]