? The Hehe Site is located

　　It is located near Hehe Village on the eastern bank of the Yellow River in Ruicheng County. It features fluvial-lacustrine sedimentation, with higher terrain in the northeast and lower in the southwest, and numerous gullies mostly in a T-shape, connecting to the Yellow River. Within a 13.5-kilometer stretch from Dutou Beigou in the north to Dongkou Nangou in the south, there are eleven stone tool sites. The stone tools were found in gravel and marl layers beneath over 20 meters of red soil, about 20 meters below the surface. The Hehe Site is currently the earliest discovered Paleolithic cultural site in North China. As certain combinations of stone tools represent distinct cultural characteristics, the Hehe Site has been named the “Hehe Culture.” It is a provincial-level key cultural relics protection unit and has attracted attention from archaeological and academic circles both in China and abroad. The Hehe Culture has certain origins with the Xihoudu Culture above it and the Dingcun Culture below it. Its geological age is early Pliocene, approximately corresponding to the era of the Lantian Man in Shaanxi.

　　Within a 13.5-kilometer stretch from Dutou Beigou in the north to Dongkou Nangou in the south, there are eleven stone tool sites. The stone tools were found in gravel and marl layers beneath over 20 meters of red soil. As certain combinations of stone tools represent distinct cultural characteristics, the Hehe Site has been named the “Hehe Culture.” It is a provincial-level key cultural relics protection unit and has attracted attention from archaeological and academic circles both in China and abroad. The Hehe Culture has certain origins with the Xihoudu Culture above it and the Dingcun Culture below it. Its geological age is early Pliocene, approximately corresponding to the era of the Lantian Man in Shaanxi.

　　The site centers around the Hehe area, extending from Dutou Village in the north to Dongkou Nangou in the south, from the Yellow River bank in the west to Huawang Village in the east, covering a total length of 13.5 kilometers. There are 17 locations with stone tools and fossils from the same period and of the same nature.

　　From 1959 to 1980, surveys and excavations were carried out at eleven locations within the site. Thirteen species of mammal fossils and more than 160 artificially made large pointed tools, choppers, scrapers, stone balls, and other implements were unearthed. The Hehe stone tools are mainly flake tools, often made from quartzite, though some are made from vein quartz. They were made using hammer percussion, anvil battering, and throwing techniques, and most were used without undergoing a second processing stage. The site remains well-preserved.

　　In May 2013, it was announced by the State Council as part of the seventh batch of Major Historical and Cultural Sites Protected at the National Level.