According to Darwin's theory of evolution, the ancestors of humans and apes are a kind of forest apes. Due to environmental changes, forests are reduced, some forest apes live underground and evolve into adults, while some forest apes still live in trees and evolve into modern apes.

Humans were born 50 thousand years ago ... that is to say, humans were born 60 thousand years after the extinction of dinosaurs. Since the animal kingdom, human beings have been divided into different kinds. Taxonomically, humans belong to vertebrates, mammals, primates, apes and hominids.

About 450 thousand years ago, humans and apes began to differentiate, resulting in Lamarcinopithecus, which later evolved into Australopithecus 20 thousand years ago and further developed into modern humans.