Mutianyu Great Wall, a masterpiece of the Ming Dynasty Great Wall, was supervised and built by Xu Da, a general under Zhu Yuanzhang, on the ruins of the Northern Qi Dynasty Great Wall. This section of the Great Wall connects Gugbeikou in the east and Juyongguan in the west, and has been a vital military defense for protecting the capital region since ancient times. It boasts famous landscapes like Zhengguantai Pass, Dajiaolou, and Eagle-Flying-Upside-Down. The well-preserved wall showcases the ancient charm of the Great Wall.