The Yuewen contract referred to the many changes made by Yuewen Group in 2021. The following are some of the reasons for the changes: 1. Add a detailed description of the copyright protection clause: In the previous contract, the copyright protection clause was relatively vague. Therefore, this revision added more copyright protection clauses to ensure that Yuewen Group could better grasp the copyright. 2. Added pairs: In this revision, Yuewen Group added more things such as royalties allocation, copyright transfer, publishing rights, etc. These provisions were meant to better protect and allow them to better utilize their creations. 3. Adjusting the scope of use of copyright: In the previous contract, the scope of use of copyright was relatively limited, mainly for adaptation, translation, distribution, and other purposes. In this revision, Yuewen Group expanded the scope of use of copyrights to the category of "fair use", which could be used for reasonable purposes such as promotion, publicity, display, education, etc. 4. Adjusting the conditions for the transfer of copyrights: In the previous contract, the conditions for the transfer of copyrights were relatively vague, resulting in some unwarranted guarantees. In this revision, Yuewen Group added more conditions for copyright transfer to ensure and obtain corresponding guarantees. The revision of the reading contract was aimed at better protection and increased the level of detail in copyright protection. At the same time, it also adjusted the scope of copyright use and transfer conditions.