Chinese history is about 3,300 years from the mid-Shang Dynasty (counting from 1300 BC) when the first systematic oracle bone inscriptions appeared in the history of Chinese characters; Erlitou cultural relics that are representative of urban positioning in archeology (1920 BC) ) It is about 3,700 years; it is about 4,100 years from the legendary Xia Dynasty in the Western Zhou literature in 2070); it is about 4,700 years from the legendary era of the Three Emperors and Five Emperors (counting from 2698); It is about 5,300 years from the earliest discovered city Liangzhu cultural site; from the uncertain mythological age of God, Pangu, and Nuwa, it is about "five thousand years" (this is also the length of traditional folk cognition) ; It is about 10,000 years from the Neolithic Cishan culture; from the Paleolithic period of Peking Man and Lantian Man, it has a history of about 68–1 million years.