Introduction to the site: The site was excavated twice in 1993 and 1995. The unearthed relics were mainly stone tools and bone, horn, teeth, clam products and a large number of animal fossils and plant fruit cores. Among them, the most significant discoveries were rice husks and primitive pottery fragments, indicating that southern Hunan was one of the first regions in the world to engage in rice cultivation and one of the first regions in my country to invent pottery technology.