The Overlord Strips Off His Armor was a wuxia novel that told the story of a martial arts master in the context of war. I heard that this book was rented from a bookstore, but I don't remember the details. If the book is no longer available online, it could be because the copyright has expired or it has been purchased by another publishing firm. It could also be because the website has deleted the content of the book. If you want to read this book again, you can try to find it in your local rental bookstore or second-hand bookstore or search for relevant keywords on the Internet.