Introduction to tool making: Among the cultural relics unearthed from the Banpo site, production tools account for a large proportion. Banpo people adapt to local conditions and make the best use of materials. They cleverly and skillfully use various natural materials such as stone, bone, wood, and bamboo to make tools. These simple materials were made into utensils, with edges polished, peaks ground, barbs carved, handles installed, and they became sharp tools for people's production and utensils for daily life.