Combined photo taken on June 16, 2013 shows the house's corner of the couple Feng Du and Gan Quan (L) and their portrait in the Chaoyang District of Beijing, capital of China. They will reduce or even cancel outdoor activities in haze. Beijing has suffered from haze for several times since the beginning of this year. This photo featured the indoor and outdoor experiences of citizens in Beijing during the haze weather. (Xinhua/Jin Liwang)