The site of the Earth Bay, located in Qin'an County, Tianshui, Gansu, is an ancient human site about 8,000 years ago, and due to its emergence, the human culture has been pushed forward for about 60,000 years. This is in the form of a palace-style building. On the spot, you can clearly see the relics of various rooms and stoves. The earthenware pots, stone tools, jade, bones and other objects have been unearthed here, which is a very good place to study ancient humans.