Apes are evolved creatures. Apes are the oldest primates, that is, the ancestors of human beings and all modern apes. It can be traced back to the Paleocene 65 million years ago. This is a timid mammal, which likes to run around on the ground and feed on insects. Ape's eyes are forward, and they are on the same plane. Forelimbs are similar to human hands, can grasp objects, are very good at climbing, and are mostly active in trees in the forest.

The time when apes evolved into humans.

It has evolved for 4.5 million to 5 million years. Evolution is divided into four stages. Early human apes evolved for about 3 million years and were able to stand and walk with stone tools. In the primitive stage of late human beings, from 2 million years to 300 thousand years of evolution, fire can already be used. The brain is relatively developed and close to modern humans. The Zhoukoudian ape-man in Beijing belongs to that era.

The third stage is the early homo sapiens stage, which looks very much like modern humans 200,000 to 50,000 years ago. The fourth stage is the late Homo sapiens stage, which appeared 40,000 to 50,000 years ago. Human beings appeared in matriarchal society, with primitive religion and sculpture and painting art in culture, represented by Yamaguchi cave people.