I've installed two Chinese fonts from the repos: UMing and UKai. I like better how UKai looks, but the default font picked by Ubuntu (when selecting a non-Chinese font) is UMing. For example, my desktop font is Droid Sans, but the Chinese caracters are picked from UMing.
How can I choose UKai for the default Chinese font?
P.S. If I just change the desktop font to UKai, I won't get the Droid Sans latin characters, so that's not a solution.