shenzhen's air quality was among the top 10 cities in china in november, according to a ranking of 74 cities by the ministry of environmental protection.
haikou, xiamen, zhoushan, fuzhou and guiyang were among the top five, according to the list released sunday. huizhou, lishui, nanchang and kunming ranked from 6th to 9th.
capital cities in northeast china and major cities in hebei province ranked at the bottom.
shenyang in liaoning province, xingtai, baoding and shijiazhuang in hebei province, as well as harbin in heilongjiang province were worst hit by smog, mainly caused by emissions from winter heating and unfavorable weather conditions.
air in changchun, langfang, tangshan, jinan and hengshui ranked 6th to 10th worst.
in november, serious and sustained air pollution affected northeastern china and north china cities. between nov. 1 and 14, 34 large cities in northeastern china reported serious pollution
