Haian Triangle City Ruins

　　The Triangle City Ruins are situated in the sand dunes about 10 kilometers west of Hongshaliang Township, northeast of the county town, and roughly 55 kilometers to the southwest of the county town. The city measures about 120 meters in width from north to south and approximately 200 meters in length from east to west. Remnants of stone wall foundations still exist. It gets its name from an irregular triangular high platform in the northwest corner of the city, which stands 8.5 meters high. The site contains numerous pottery fragments and broken bricks on the ground, as well as stone axes, stone knives, and stone spinning wheels. Its cultural type is similar to the "Shajing Culture" found at the Liuhudun Ruins. It is a provincial-level cultural heritage protection unit.