What was the origin of mankind? When did it start evolving?

Humans were not purebred creatures in the beginning. Instead, they were a species called the Probrainless Man, a highly intelligent and civilized creature. The primitive brain was described as having a highly developed brain and body coordination, capable of complex thinking and emotional communication. The primitive brain people gradually evolved and began to develop more advanced intelligence and technology, creating various civilizations and cultures. As time passed, the primitive brain people gradually developed the ability to speak and began to communicate and cooperate on a large scale. The origin of human beings could be traced back to the appearance and evolution of the primitive brain people.