How did the book Zhihu get on the shelves? Detailed steps

In Zhihu, we saw a good book, and we didn't have enough time to finish it. What should we do at this time? Add bookshelves. Here I'll talk about how to put the books we read in Zhihu's bookshelf. The following is the specific process:

1. We open the Zhihu APP and click to enter the discovery interface, and then click to enter the bookstore. (as shown in the figure below)

2. Then click the book you want to add to the bookshelf, and click Add to the bookshelf after entering. (as shown in the figure below)