Heavy smog shrouds Chinese capital Beijing on Oct. 6, obscuring views of landmarks in the Tian'anmen area and forming a huge contrast with photos taken from similar perspective on Oct. 1. [Photo by Chen Boyuan / China.org.cn]
Heavy smog shrouds Chinese capital Beijing on Oct. 6, obscuring views of landmarks in the Tian'anmen area and forming a huge contrast with photos taken from similar perspective on Oct. 1.