Hushan Great Wall.

Most people used to think that the eastern end of the Great Wall was at the Old Dragon's Head in Shanhaiguan, but in fact, that section of the Great Wall is only the place where the Great Wall enters the sea. The real starting point of the Great Wall is the Hushan Great Wall on the Yalu River on the Sino-North Korean border. According to historical records, the Hushan Great Wall was built in the fifth year of Chenghua in the Ming Dynasty, that is, 1469, and was built by Han Bin, the deputy general soldier of Liaodong at that time. The military facilities of the Hushan Great Wall mainly include walls, wall platforms, enemy platforms, horse faces, beacon towers, moats, horse-blocking walls, etc. These facilities constitute a relatively complete defense system. The Hushan Great Wall is named after Hushan. Hushan is a solitary mountain that rises on the Yalu River. It was called Huer Mountain in the Ming and Qing Dynasties, and it was called Hushan in modern times. In history, the Hushan Great Wall was also called the Liaodong Border Wall, which was built to prevent the invasion of the Jianzhou Jurchens and protect the safety of the northeast border.