What is the historical background of Simatai Great Wall in Beijing?

访客4个月前
Simatai Great Wall is located in Miyun District of Beijing. It is an important military fortification in Ming Dynasty. Its construction is closely related to the military defense system, and it is of great significance to resist the invasion of northern nomads. After repair and protection, Simatai Great Wall has become an important material for the study of ancient Chinese architecture and military defense. And become a popular tourist destination for domestic and foreign tourists, the local eco...