In Tiananmen Square in Beijing, there's a lot of smog. So much smog, in fact, that a huge LED screen is sometimes used to display a beautiful sunrise—which is useful, because you can't see it otherwise.
Image by ChinaFotoPress/ChinaFotoPress via Getty Images
Update - So, while the image above isn't a hoax, it has been revealed to be part of a longer advert on the screens, rather than some sort of communal S.A.D lamp. The pollution is bad in Beijing, but the authorities haven't resorted to such measures just yet. A full report can be found on our US sister site Kotaku.