The Mutianyu Great Wall is located in Mutianyu Village, Bohai Town, Huairou District, Beijing, about 73 kilometers away from Beijing city. It enjoys the reputation of "The Great Wall, Mutianyu is unique". The Mutianyu Great Wall is 5,400 meters long and is one of the longest Great Walls in China. It is also one of the sixteen scenic spots in Beijing. The Great Wall was built in the first year of the Hongwu reign of the Ming Dynasty (1368) and was supervised by Xu Da, a general under Zhu Yuanzhang, on the ruins of the Northern Qi Great Wall.