TO GO WITH China-environment-energy-politics-Congress,FOCUS by Carol HUANG This picture taken on March 5, 2014 shows laborers working at a coal mining facility in Huaibei, in northern China's Anhui province. China has embraced the economic benefits of coal despite the threats it poses to health and the environment. But anger has mounted over the stubborn smog that regularly cloaks Chinese cities, and authorities have repeatedly promised action since President Xi Jinping took office a year ago. CHINA OUT AFP PHOTO (Photo credit should read STR/AFP/Getty Images)
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