Ever since Chu Dai became conscious, the sky has been gray, and the outermost edge of the city is a transparent barrier that can be forcibly entered but cannot be exited. Pedestrians on the street cannot speak and even walk crookedly. There used to be old people who could chat with Chu Dai in the tallest building in the city, but now they are gone. Before falling into eternal sleep, every old person would touch Chu Dai's head and say something that Chu Dai only knew a little bit about: "Didi should protect our home well" "Didi should be well alone and don't bully the darlings" "Didi is a good child, you will have to work hard in the future." However, every time What everyone would definitely say is, "Chu Dai, the city's barrier protects here as well as the outside. People who come in must not be allowed to go out again, you know, you must do it!" Chu Dai worked hard to practice, and the normal days passed day by day, until two cars suddenly broke in. . . . . .