Rescuers work at the accident site after an explosion happened at a private firecracker-making workshop at Langpo Village of Gongguan Township in Hepu county, south China's Guangxi Zhuang Autonomous Region, Nov. 23, 2011. Four people died and 11 others were injured in the accident, which occured at 1:08 p.m. on Wednesday. [Xinhua/Yan Xiangling]