Fog, haze lead to big spike in pollution levels
A woman cycles in heavy fog in Zhengzhou, Henan province, on Friday morning. With visibility of less than 500 meters, vehicles turned on their headlights during the day, and the city issued a yellow warning for fog and haze. Wang Song / Xinhua |
Thick fog and haze shrouded central and northern parts of China on Friday, with Hebei and Henan provinces among the most polluted areas, monitoring data showed.
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