M-x calibredb
In *calibredb-search* buffer, move the cursor to the ebook you want to open.
Press RET/o/O/V to open it.
If you are using macOS, you can also press , to quick look the ebook.
This will open in the buffer, like this：
How can I set the display to be correct after executing the above command？
I try this command:
This will open in the buffer, like this：
How can I set the display to be correct after executing the above command？