Morning, Dec. 19, 2016 - Heavy smog sets in in Weihai, Shandong. People's lives are seriously affected by poor visibility.
Dec. 17, 2016 - An aerial photo of the northwestern suburb of Shanghai, showing that air pollution is at its worst in the first several hundred meters above ground.
Dec. 18, 2016 – With a bird's eye view of the city from the top of Jingshan Mountain, Beijing is shrouded in heavy smog and the Forbidden City is almost invisible.
Dec. 17, 2016 – An aerial photo of Suzhou in Jiangsu province cloaked in dense smog, where only the Gate of the Orient and some other high-rises are visible.
Dec. 18, 2016 – The West Dyke in the Summer Palace is barely visible through the smog-filled air.
Dec. 18, 2016 – The heavy pollution emergency command in Xi'an activated a level-1 heavy pollution response and decided to close all kindergartens and primary and middle schools on Dec. 19. At least half of motor vehicles were removed from roads.
Evening, Dec. 18, 2016 – On Huaquan Street, Jingzi District, Dalian, Liaoning province, cars are running in dense smog.
Dec. 19, 2016 – People are riding electric bicycles through the heavy smog, on a street in Ganyu District, Lianyungang, Jiangsu.