The review

This future is very different from what people think of as the future world. In people's imagination, the world in the future seems to be developed by science and technology. But this future world is different, and as time traveler explaned, humans have evolved in two completely different directions because of their hierarchy. Those nobles live on the ground, grow more and more lovely, gentle and elegant, live a carefree and happy life. But that is because they never worry nothing to do, nothing to think, their bodies are getting shorter , they bahave like kids. On the other hand, the slaves of the people on the earth, to provide them with energy. But as a result of living the dark, they become crazy monsters, their food is people on the ground. After reading this book, l learned that we need to live and learn, or we will lose the the ability to live and defend difficulties.