Up to now, the number of Paleolithic human fossils and cultural sites discovered in China ranks first in the world, and the earliest primitive ancestors appeared about 6.5438+0.8 million years ago. In primitive society, production tools and weapons were not separated, but due to the competition for survival, bloody and violent conflicts often occurred between clans or tribes, so deadly production tools were also used in human wars. Later, in order to compete for land, population and wealth, the war between tribal alliances intensified. Production tools are no longer competent for the increasingly cruel war, and people begin to research and manufacture professional combat weapons and defensive weapons. Since then, weapons have gradually separated from production tools, and formal weapons have appeared. This change occurred in the late primitive society, before 2000 BC. In the Paleolithic Age, China has produced many cultural sites. The most typical site is the Xihoudu site about 6.5438+0.8 million years ago. Stone tools made in the Paleolithic Age are characterized by their massiness, simple types and diverse uses. In the late Paleolithic period, stone tools tended to be miniaturized and diversified, and the number of artifacts increased. The representative weapons of the Paleolithic age were scraper, hammer and chisel. Stone arrow. The ancient document "The Book of Changes * copula" said: The string wood is an arc, and the chopping wood is a vector (1). Arc is a wooden bow; Arrow is an ancient name for arrow. Although it is difficult to see the stone age bow and arrow poles in archaeological excavations (the bow and arrow poles are made of perishable materials such as bamboo, wood and rattan, which cannot be preserved so far), the stone age arrows unearthed are very rich, including stones, bones, mussels, pottery and other different materials, and most of them have been polished and have different shapes. Neolithic sites are almost all over the country. The most famous cultural site is the Neolithic cultural site in the Yellow River valley (5550-4900 BC); Among them, Hongshan Culture (around 3500 BC) is unique. In the Neolithic age, people have mastered the skills of grinding stone tools, and they can grind sharp and angular stone tools. At the same time, the technology of processing wood and bones with stone tools was improved, and the technology of making weapons was prepared.