the book starts off boring, the reader gets the setting and can imagine how cold it is on the wall, the problem is when the decription goes on for a few chapters (like bro i get that its cold just continue with the story). There are also plotholes like how the government works or why they dont use tec like cameras and drones if they have them, also the rules of what happens to the defender if one of the other gets over the wall is peak stupidity. Also i found out that concrete is cold for some reason.