Time machine

Have you ever imagined what the world will be like in the future? I'm sure everyone has fantasized about what the future might look like. After reading the time machine, I was still absorbed in the author's description of the future world. The time traveler in the novel travels to the year 802701 through the time machine he invented, which may seem impossible to you, but to the time traveler it's a thrilling experience. The novel mainly describes the time traveler search for the time machine that is lost in the future.Many strange and dangerous things happened in the process. The biggest difference between the future world and the present is that people in the future world are divided into two categories. One of them lives long underground, the other above ground. The reason for this is that science and technology are becoming more and more developed, and they begin to expand underground, underground transportation, underground supermarkets and underground houses. “We cannot change our past, but We can change our future”，this is what I learned from the novel.