What's EPUB file?
EPUB (short for electronic publication; alternatively capitalized as ePub, ePUB, EPub, or epub, with "EPUB" preferred by the vendor) is a free and open e-book standard by the International Digital Publishing Forum (IDPF). Files have the extension .epub. EPUB is designed for reflowable content, meaning that an EPUB reader can optimize text for a particular display device. EPUB also supports fixed-layout content. The format is intended as a single format that publishers and conversion houses can use in-house, as well as for distribution and sale. It supersedes the Open eBook standard.
How to fix the issue of display of special characters?
Close the epub reader for windows, and open the internet explorer. Open a website such as http://www.epubforwindows.com , then push the right mouse button, find 'ENCODE', and change to Unicode(UTF-8). Now you can close the explorer and use the epub reader.