Evidence of neolithic and megalithic cultures have also been found in the state.
Manufacture stone tools on a large scale shows the rich Neolithic culture and skills.
The Neolithic culture and technology spread worldwide between 4,000 and 8,000 years ago.
The first was to study the chronology and cultural evolution of the Neolithic cultures.
Their stone-age technology remained little changed until a new Neolithic culture evolved about 10,000 years ago.
Dongyi culture was one of the oldest neolithic cultures in China.
Some scholars say that during this period, Neolithic culture also developed in Japan.
It is said to have developed from other elaborate cups that also had high stems and were found in Neolithic cultures.
Forster described the book as a document of a surviving "Neolithic" culture.
Some Neolithic cultures listed above are known for constructing megaliths.