This photo taken on December 12,2015 shows the sublime beauty of the Simatai Great Wall in Miyun county, Beijing. Simatai Great Wall, which was built in the Ming Dynasty and is located in the middle of Miyun county and Luanping county, is only a length of the Great Wall. Covering a distance of 5.4 km, it is the most dangerous part of the Great Wall. (Photo: Asianewsphoto/Song Weixing)
