A woman rides a motorcycle while carrying two others amid heavy smog in Lianyungang city, East China's Jiangsu province, on the evening of Dec 7, 2013. According to statistics from China's Ministry of Environmental Protection, 104 cities across 20 provinces in China suffered from severe air pollution on Saturday, with the Pearl River Delta, Beijing, Tianjin and Hebei province hit the hardest. [Photo/Xinhua]
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