It is located in Jiuzhou Town, Cang County, 20 kilometers east of Cangzhou City. The area of the city is about 4.3 million square meters, the width of the old city wall is about 40 meters, and the measured perimeter is 7787 meters. It was built in the fifth year of Emperor Gaozu of the Western Han Dynasty (202 BC), that is, the county seat of Fuyang. The old city wall is now incomplete, except for five sections on the west and south sides. In the old city, there are iron lions, iron money warehouses (the unearthed coins and texts are all Chongning, Daguan, Zhenghe, Xuanhe Tongbao, etc.), iron furnaces and Kaiyuan Temple and other ancient architectural sites, underground and rich in cultural relics. Jiuzhou City was once named Lion City and Wo Niu City. It has been listed as a provincial key cultural relics protection unit.