China will be the strongest winter this year, pollution of the Ministry of Environmental Protection

China's Beijing, Tianjin and Hebei and surrounding areas will be a large-scale heavy polluting weather, 23 cities in the air quality may be 4 consecutive days to achieve severe and above pollution, air pollution will reach the highest level of early warning response standards. This will also be the winter of this year, China appears the longest duration, the most serious pollution of a large-scale air pollution process.