After being cooped inside because of the bad air, a psychology student at Peking University ventured out to place the masks on campus statues of Spanish novelist Miguel de Cervantes, Communist Party co-founder Li Dazhao and a sage practicing tai chi.
"I was feeling really low, so I came up with this idea," Jiang Chao said in a telephone interview.
Beijing remained cloaked in hazardous white pollution hiding much of its skyline today, despite the announced closures or production cuts at 147 of the city's industrial plants.
The meteorological center said moderate or severe pollution had persisted in northern China since Thursday, and that it was particularly serious in Beijing and its surrounding area. It forecast that the pollution would continue in parts of eastern, northern and central China until tomorrow evening, when precipitation and wind should help to disperse it.