Well, to be honest, I didn’t do the research on google this before, I tried to do my own way. I came up with the idea which is I need to download the font or something like on WIndows OS. But after couple weeks, I gave up. I found this one easier than what I think. You don’t need to download the Chinese font either. What you need was just set up the font.
How can I set the XBMC skin language without having messed-up characters using default skin ?
1. Go to Setting/Appearance
2. Under Skin, choose the Skin type and the Font according to the following table (Arial)