Beijing’s air quality index reading hit 220 at noon on Wednesday – far above the heathy level of 25 for daily exposure stipulated by the World Health Organisation. Photo: AFP

Why does China’s choking smog persist despite Beijing’s clean-up efforts?

Chinese residents raise questions as severe air pollution set to worsen this weekend, affecting more than 30 cities in six provinces

Topic |   China pollution

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Beijing’s air quality index reading hit 220 at noon on Wednesday – far above the heathy level of 25 for daily exposure stipulated by the World Health Organisation. Photo: AFP
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