40th century BC
the 40th century Bc is between the stone and the bronze ages before technology was born and after christ was born where cavemen exsists and cavemen started hunting for animals to get food and first, they discovered fire, clothing, and build a house. It started in 4000 BC and ended in 3901 BC like the dreamworks movie released the 2013 animated movie in the cavemen ages The Croods
40th Century BC Media
Jade bi from the Liangzhu culture. The ritual object is a symbol of wealth and military power.
