Is Jason's book "I am a singer, don't forget my peace of mind" genuine?

The official Weibo said this: After confirmation with Zhang Jie's studio and "I am a singer" program group, neither party authorized Changsha XX Culture to publish the book "I am a singer's Jason ·XXXX". Please tell each other to prevent being cheated. Because this book is recommended by Zhangba, it is also solemnly declared that Zhangba has been closed, and Weibo is certified as a product promotion. Now all the content (if there is marketing behavior) sent by this account does not represent Jason's official fan base, and has nothing to do with Jason and the team.