Under the Dome by Chai Jing

Beijing had 175 polution days in 2014 - Tianjin had 197 polution days in 2014 - Shenyang had 152 polution days in 2014 - Chendu had 125 polution days in 2014 - Lanzhou had 112 polution days in 2014 - Shijiazhuang had 264 polution days in 2014