I have more information on the problem with some Chinese fonts which Atlantis does not embed into EPUBs. The problem (or I would say the limitation) is much wider than just font embedding in EPUBs. Atlantis Word Processor presently does not support fonts with non-Latin face names (no matter the feature of Atlantis). You could not apply such fonts to a text fragment in an Atlantis document through the GUI of Atlantis on an English system. Possibly you can use the "華康儷中宋(P)" font in Atlantis. But most probably this is because you have the Chinese version of Windows.
So the present version of Atlantis Word Processor has a limitation regarding fonts with Chinese face names. Regrettably it will not be lifted soon.
But when I tried to embed Chinese fonts "汉鼎繁古印" and "汉鼎繁琥珀" (they can be freely downloaded from this page:
http://www.sino.uni-heidelberg.de/ed...nese_fonts.htm) into a sample EPUB file manually, ADE refused to use them. Even when these fonts are referred via English face names (ie no UTF-8 in CSS). Maybe such fonts are not supported by EPUB readers at all, and embedding them does not make sense? ...
Still about font embedding through the "Save as eBook" command of Atlantis. I can confirm that Chinese fonts with English face names get embedded into EPUBs and displayed by ADE and Sony Reader without a problem. So it seems that a solution at this point is to use fonts with English face names only.