I don't know the details of the book," The King of the City's Experts in Special Forces ". However, generally speaking, there were various reasons why a novel would not be updated after it was completed. For example, the author could not continue writing for personal reasons or did not update due to changes in the creative plan. Whether the other book was completed or not also depended on the feedback from the readers and the editor's evaluation. If you know more about the book, I'll try my best to answer your questions.