Dense fog on Sunday hit China's east and central regions from the northeast to the south, causing serious air pollution. Photo: Xinhua
Dense fog on Sunday hit China's east and central regions from the northeast to the south, causing serious air pollution. Photo: Xinhua

Smog threat remains; Beijing issues first ever orange alert

Beijing issues orange warning for the first time as reduced visibility disrupts transport systems

Dense fog on Sunday hit China's east and central regions from the northeast to the south, causing serious air pollution. Photo: Xinhua
Dense fog on Sunday hit China's east and central regions from the northeast to the south, causing serious air pollution. Photo: Xinhua
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