Introduction to the microlithic cultural site: There is a microlithic cultural site 1 km west and 2.5 kilometers southeast of the Haba Lake Forest Farm along the edge of the original lake. A large number of red pottery fragments, stone axes, stone adzes, and numerous willow leaf-shaped tiny scrapers, stone cores, etc. were found at the site; freshwater shells were found in the waterlogged pond strata excavated from Haba Lake, and a large number of animal bones were found at the edge of the lake. These cultural characteristics are important characteristics of microlithic cultural relics, which are about three thousand years old. Some experts define this cultural relics as "prairie microlithic culture". Microlithic culture is one of the important basis for studying the development process of human society from hunting and gathering economy to animal husbandry economy.