K810_R8BA024 RED53 with chinese?

I'm using:
K810_R8BA024_MAIN_GENERIC_RED53.mbn
K810_R8BA024_FS_APAC_RED53.fbn

And I'm wondering if I'm able to write SMS in chinese?
Will I need to completely change the firmware into apac, taiwan, hongkong or chinese?

I've checked a LOT of language files but there is never a zh.t9 or zc.t9 etc.
It is just all en.t9 and then zh.lng or something..

So what would be the best way to make my phone be able to send SMS in chinese, simplified of traditional?

THANKS