Book Chaser was the name of a novel reading app. There were many different versions in the novel reading app market. The following are some historical versions of the book chasing artifacts: 1 Book Chaser (Book Flag novel): The earliest version of the Book Chaser was originally developed by Book Flag Technology and launched in 2012. The application provides online reading and download of novels, allowing users to easily search and browse for novels they are interested in. 2 Book City (Reading): In 2013, the Reading Company launched the Book City version of the Book Chasing Artifact, which provides more complete novel search and reading functions, and supports online payment and reading progress viewing functions. 3. Yuewen Group (Qidian Chinese Network): In 2016, Yuewen Group launched the Qidian Chinese Network's book tracking artifact version. This version integrated the content of all the novel platforms under Yuewen Group. Through this application, users can browse, search, download, and read all the novels from Yuewen Group. 4. iReader: In 2019, iReader launched the iReader app. The app integrated the content of all the novel platforms under Palm Reading and provided more convenient reading methods and social functions. As the competition in the novel reading application market intensified, the version of the book chasing artifact was constantly updated and upgraded to provide users with better services and functions.