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Heavy Smog Hits North China
Thick smog engulfed 24 cities prompting the Chinese government to announce a "red alert".






A pedestrian crosses a smog-shrouded street in Lianyungang, eastern China's Jiangsu province, on Dec. 19.
Hospital visits spiked, roads were closed and flights cancelled on Dec.19 as China choked under a vast cloud of toxic smog, with forecasters warning the worst was yet to come.




A woman takes photos of lion sculptures that have their mouth covered by masks in Xi'an Fine Art College in Xi'an, Shaanxi province, on December 12. Several art students spent the night putting masks on more than 800 stone hitching posts to raise awareness of air pollution.
"The smog has serious repercussions on the lungs and the respiratory system, and it also influences the health of future generations, so under a red alert, it is safer to stay at home rather than go to school," said Li Jingren, a 15-year-old high school student in Beijing.
Related:Plants Closed, Cars Stopped as China Faces Smog 'Red Alert'
