Welcome Kobododo,
generally speaking, Calibre can convert Chinese Pdfs to epub. Depending on the nature of a specific pdf file, however, the results may vary.
Since I usually do not use Calibre and do not read Chinese texts, I had no previous experience with this things and tried it myself before writing this post.
I took this pdf:
http://www.cdc.gov/ncidod/dvbid/west...es/chinese.pdf
I took this font:
http://de.cooltext.com/Download-Font-黑体+Sim+Hei
There is no special consideration behind this choice, I just took one of the first hits by google and took a pdf with simple layout (horizontal, left to right writing).
- I launched Calibre
- added the chinese.pdf via "Add books"
- selected the book in the list (the title is "Microsoft Word - Template.doc", the author "Clews")
- pressed the button "Convert books"
- chose the "Imput format" PDF
- chose the "Output format" EPUB
- clicked on "Look & Feel"
- pressed the buttom next to "Embed font family" and selected SimHei
- pressed the button "Ok"
- waited some seconds until the job was finished
- clicked on "Path: click to open"
- copied the file "Microsoft Word - Template.doc - Clews.epub" to my Kobo Touch.
The file is displayed rather nicely. The list bullets, however, seem not to be supported by the SimHei font, they are represented by empty boxes. There are also some superflous line breaks. But the result is much better then I expected
I also tried the option "Subset all embedded fonts (Experimental)". The result was not pleasant.
Note: I do not have the most recent version of Calibre (I have 0.9.10).
If you can install custom fonts on the Wireless, you do not have to embed the Chinese font in the epub. If the Wireless does even not support Chinese embedded fonts, it might by best to replace it by Touch/Glow/Mini.