You will need a font with the proper character sets for sure.
How to install (where to copy) the font will mainly depend on the internal workings of the embedded system. On Linux-based systems have a look at /usr/share/fonts - if that location exists and you have write permissions, then copy your Chinese font of choice and see if it works.
Be aware that you may have to let the system know that it has to use Chinese as the main language. This might require some other system-files (locales).
Check the documentation of your embedded system before wasting too much time on experiments.
Hope this helps,