公元前对世纪，当世界上多数民族尚处于茹毛饮血的蛮荒时代，在辽阔的东方大地上，华夏民族已率先进入了发达繁华的青铜文明。由此中国社会由原始社会进入君主制的奴隶社会，其间共夏、商、周三代，约1600年。由于这时青铜逐渐取代原始的石器成为武器和工具，故三代也称为青铜? In the BC century, when most of the ethnic groups in the world were still in a primitive age where the animals were exuberant, the Huaxia people took the lead in entering into the prosperous and ancient bronze civilization in the vast east. Thus the Chinese society from the primitive society into the monarchy slave society, during which summer, Shang and Zhou Dynasties, about 1600 years. Since then bronze gradually replaced the original stone as weapons and tools, so the third generation is also called bronze?