I'm working on the Chinese language package now.
In my experience, 11px is fine for chinese to read. One template property you must to adjust is bb code quote. Set font size to 11px, style to plain(cancel italic). Fonts in some other area may be too small but still readable.no, I just speak about 10 words of chinese
where in ACP do you change the font to 12px in order to read chinese language properly?