The ancient city of Nandun includes the ruins of Nandun during the Xia and Shang dynasties, the ruins of the ancient city of Nandun, the existing city walls of the ancient city of Nandun, the ancient tombs of Nandun, the ruins of Guangwu Terrace, the Guangwu Temple and other architectural historical sites and cultural relics. Due to long-term flood erosion and human damage, the east, south and west sides of the city wall have been razed to the ground, and only one section of the north wall remains, which is 251 meters long, 7 meters at the highest point and 10 meters at the widest point. The bottom layer of the old city wall is the ruins of the Xia and Shang dynasties.