City wall introduction: The exact construction age of the old Guangwu ancient city wall, according to relevant documentary evidence and existing architectural research, is that it was first built in the Liao Dynasty. Bricks were repaired and repaired in the Qing Dynasty. In addition to the appearance of the existing city wall, which has the characteristics of the Ming Dynasty, its main structure and structure are basically relics of the Liao Dynasty. The ancient city wall has a circumference of 1,652 meters, a total area of ​​16,296 square meters, and a rectangular plane. The city wall has a total height of 8.3 meters, a bottom width of 5 meters, and a top width of 3.4 meters. The exterior is entirely made of bricks, with stone strips as the foundation.