Introduction to the Erlitou ruins: The central part of the Erlitou ruins is a palace area, surrounded by handicrafts and general residential areas, connected by roads. It is a concentrated city with the content and scale of an early city. Among other sites of the same period across the country, there is absolutely no such level. This shows that the Erlitou site was the center of national politics, culture, commerce and trade at that time, and was the first royal capital of China.