Hi chinese readers,
The site
http://www.pinyinjoe.com/pinyin/pinyin_addins.htm mentions a font with bopomofo (which I already advertised) and another one ever more brilliant with pinyin (and tones) included above characters.
Here is the direct link:
http://fonts.mobanwang.com/fangzheng/201009/8689.html
My kobo couldn't find the ttc file. Not sure if it was because of the ttc format or the name in chinese (not only the file extension, but also the name inside).
I converted the file into ttf with fontforge (just open, choose the ttc, choose the first font inside, and go to file > generate font, discard errors).
Works great !!
Have fun
François