The feeling of reading PDF English ebook with DoctorYi

[Ellean]

Before I came to MR, most of my ebooks are EBA files which only can be read in DoctorYi. Because i found it is easiest and most confortable to read the books.
But for PDF files, like other ebook readers , the ease of use and readability is also a problem of DoctorYi. When I am reading Chinese ebooks (PDF),I find it is not so easy to choose the suitable font to read the whole line in one page. However, it surprised me that it is more nice to read English ebooks(PDF). I used DoctorYi M218A+ to read Littble Brother (PDF). And I found that the most suitable font that the reader automatically choose for reading the whole line is really clear and confortable for me to read. And the screen of DoctorYi can also offer two ways for reading, one is horizontal when the other one is vertical. In my opinion, it is better to read PDF by horizontal showing.
Here is the photos attached. But i still hope there is a way to read PDF file as confortable as EBA ones. Because i like to read English books ..