Heavy pollution hits Changchun as smog returns (4/5)
2013-01-22 09:30 Ecns.cn
Web Editor:Su Jie
People wear masks while walking on the streets in Changchun, Northeast China's Jilin Province, January 21, 2013. As smog returned to haunt the city after a short respite, visibility in some areas reduced to less than 1 km, and the air quality fell to dangerous levels. [Photo: CNS/Zhang Yao]
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