I have never used xandros.
When you install other distributions of Linux, during the installation you should be asked what language do you want to use, and that is a multi selection item, so you can select both English and Chinese or any other languages you want to use in your system. That step basiclly will install the font for different languages support.
but i wasn't asked about languages when i installed,then what will i do?i installed the system with vmware workstation,but i don't think that's not proper,what do you think?