I came from the chinese version, the story is really interesting. The character interactions are fungi read, the main character have a loose screw, and there are very little internal monologues for the mc, so it’s pretty funny to see he having a fit and surprise everyone, including the reader. The power system in this book is very interesting, a bit wild, it not what you would expect. I Strongly recommend this book

It just means it have a post-apocalyptic world setting. When the civilization is either rebuild or on the process of rebuilding.