I'm wondering how those MMO(like world of warcarft) games render unicode characters(Chinese). Typically, those games have a message system where you can type any word and display it. They can also show big chunk of words for "task description", "weapon description" and etc.

I used bitmap texture to render English characters in my engine, but bitmap texture for Chinese would be a memory eating monster considering there are roughly 10k of them. What technique do those games usually use to render unicode characters?