Sealed for Ten Thousand Years, Am I Out of Touch with the Times?

That author, I really don't understand what your book is about. If you want to write about a passerby protagonist, I hope you can write it well on the label. I am very interested in the introduction of your book, but not in your content. I'm sorry.

I've read Chapter 20, but I don't understand what it's about. Being sealed, where are the people, what the hell?