A man surveys the Forbidden City in Beijing on Wednesday as air quality in the capital descended to heavily polluted levels. Photo: Simon Song

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Double jeopardy of fog and heavy smog across northern, central China

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Published: 11:45am, 14 Jan, 2015

Updated: 2:59pm, 12 Jan, 2018

A man surveys the Forbidden City in Beijing on Wednesday as air quality in the capital descended to heavily polluted levels. Photo: Simon Song

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