Farewell to 'APEC blue' as smog returns to Beijing (1/4)
2014-11-20 09:07
Ecns.cn
Web Editor:Yao Lan
A man wearing mask poses for a photo amid heavy smog at Tian'anmen square in Beijing on Wednesday, November 19, 2014. Beijing's air quality index hit 348 at 4 pm with the index of PM2.5, the smaller but more harmful particles, also reaching the same level, said the website of the Beijing Environmental Protection Monitoring Center. [Photo: China News Service/ Song Hantao]
