Need help 

Hi bro. I'm expecting some help from you. There's an edit warring going on by an user User:Shivamsetu on pages of Patna and Bihar. Earlier it was written Bihar is a north indian state but he changed it to east. I've some reliable source (like news clips from india's trusted media group like The hindu, India today, TOI for instance see
, , , , , , ,  ) which openely says Bihar is a north indian state and also an Indian goverment site (Cultural zones of India) which puts Bihar in both the categories ie, North Central Indian Cultural Zone () and East Indian Cultural Zone () (this is the only source on which a wikipedia page North India is created). And that guy also has some proofs to put Bihar in east india (sources like same media group and bihar goverment sites and etc which says bihar an eastern indian state).
So bro, i wanna say that isn't it possible to put and show Bihar as an eastern as well as northern Indian state likewise Indian goverment categorized it into these two groups?? I think it is possible because i've reliable source of information as reference for my claim and he also have so we both can put our points on wikipedia with our reference. And also, he always undo my edits when i put my claim, even i had a discussion with him but he seems to me like an arrogant and thinks that he's self sophisticated and self centred and like just he own these pages and only he could make edits and only his sources are reliable. Currently he's got that page blocked from editing with the help of some other users. So please you can do something about that? And also it feels to me and other peoples like denying our right to edit on wikipedia even when we've reliable source of information as to put as reference. And moreover that user looks to me an east freak, everywhere just putting east and east and east.