Must Evolve into Human

His name was Yuan Hou, and he was suffering from a terminal illness. In order to leave a guarantee for his mother and lover, he chose a method of death in the factory to destroy the body and eliminate traces. Perhaps the obsession was too deep, so the soul was immortal, and it actually passed through the body of a chimpanzee and stayed with her in another attitude. Since then, there has been an orangutan wearing pants in the zoo, doing various chores. No one knows that it has a human soul and a system. No one knows that it has an obsession: it must evolve into a human! And the world is slowly becoming strange...