Mary Sue has seen too much. I wanted to write an anti-Mary Sue.
After the completion, most of the revisions were made with sentence errors and word usage errors, which did not have much impact on the understanding of the full text.
Remarks at the end of the book: There will be no more nonsense later. This is the result of not having an outline and a detailed outline. So the next book must have an outline and a detailed outline (ah, just keep this flag up.)
Intention: nonsense