Looking into the settings, should help.
If not, then the other way is to flash the rom, so that you can have chinese or any other language.
Hmm...
Btw, are you talking about Samsung Galaxy Note?
If you know a bit about that phone, you can find many good tips / advises here :
forum.xda-developers.com/
I will look again about that tonight.
On my rom, I can choose the language I want to use, when booting the first time.
Hmmm.... I have maybe the answer now in fact. you should reset to factory defaults, then, when turning off and on, it should ask you which language you want to use.
Please feel free to let me know