Under the Dome

Under the Dome is a 2015 self-financed Chinese documentary by Chai Jing, a former China Central Television journalist, concerning air pollution in China. It was viewed over 150 million times on Tencent within three days of its release, and had been viewed a further 150 million times by the time it was taken offline four days later.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.