Tibetan usually uses an indic script. Tibetan isn't the same as Chinese, but a system that can support Chinese is probably supporting Unicode and at least is supporting multibyte characters, so I'm pretty sure the Tibetan documents would be ok, once the fonts are loaded. Here's a sample, in case someone has a chance to check: དབུ་ཅན་
More here:
http://en.wikipedia.org/wiki/Tibetan_script