There could be many reasons why a novel was not updated at the same time. The following are some of the possible reasons: 1. The creative team is scattered. The novel writing team may be scattered due to various reasons such as career changes, moving, job transfer, etc., resulting in the creative team not being able to update all the works at the same time. 2. No purchase of new works by the novel publishing company: The novel publishing company may not purchase new works for certain reasons, such as the style or theme of the new works does not match the existing works, the quality of the works is not as good as the existing works, etc. 3. Different update frequency: Different authors or teams may update at different frequencies. Some authors may update a work every day, some authors may update a work every week, and some authors may update more slowly or even once a month. 4. Different updates: Some authors may include different storylines or plots in their updates, while others may focus on different parts of the same work, resulting in different updates. 5. Changes in market demand: The market demand for novels may change at any time. Some authors may change their update plans because of the reaction of readers. There could be many reasons why a novel was not updated at the same time, but in most cases, these problems could be solved by communicating with the author or the bookstore.