You have to do chinese charsets by yourself for this translation (you may add only those characters which were used)
Haven't SupSuper released info on how to add custom charsets yet?
As I see:
- Font.dat - UTF8 encoded file of letters, in specific (utf8) order.
- Small.fnt - small letters font, 8x9 pixels, #0 = invisible #5 =max intensity, in order of Font.dat.
- Big.fnt - big letters font, 16x16 pixels, in order of Font.dat.
- *.geo - geoscape panel in pck format (64x200 pixels).
The thing is, there is no *.fnt and .dat editor.