When I closed my account, all the books on the shelf were gone. But when applying for Taobao account, there is a Taobao account besides nickname, right? In other words, when logging in to the Taobao reading client, you can log in with a nickname or a Taobao account. If you cancel the account nicknamed login, the books on the shelf will disappear. At this time, you can log in to the same account with Taobao account, and the books on the bookshelf will be displayed in the download. However, it is best not to cancel the account!