Introduction to the restoration map of the pottery kiln:The pottery kiln located on the edge of the trench was discovered during the seventh archaeological excavation in 1974. It was later than the Tanshishan Culture and belonged to the Huguashan culture between 3500 and 4300 years ago. During the Cultural Period, this kind of pottery kiln was an oval-shaped horizontal cave kiln without grates, and the diameter of the kiln was less than 1 meter.