Where I can find files with language on android custom rom
Own answer but no solution related to this question

Think too fast asked question

Ok I found it!!!

but this not the answer on this question because this isn't related to file with language but is very helpful I also changed language to English in settings by luck :)

I did this:

(I type in English because I changed the language on it)
Just remove SIM card and by intuition press next and turn off 2 switches and had something Chinese text with !


Clicked Settings blue gear icon 
the tab on the right (this is general settings) there are 2 tabs
icon with keyboard is the language! press it
next press the first button and change to English for example :) 


But I can't take screenshots of phone :|