Spring snow covers the Huangyaguan section of the Great Wall, located in north of Ji county, Tianjin municipality, March 20, 2013. The snow fell from Tuesday night to Wednesday morning and brought breathtaking views to North China's Tianjin and Beijing. Huangyaguan was originally built in 556 during the Northern Qi Dynasty (AD 550-577) and was reinforced during the Ming Dynasty (1368-1644). [Photos/Xinhua]