Let me say that Id love to concentrate on China,HOWEVER...
I have been looking though my books and I have maps on ALL of the only countries, and most of the larger cities (eb it Chna,Japan,INdia,whatever) so I can certanly help with that.
I will only ask you to give me a deadline. That way I can make sure to have everything at hand by time it is neaded.
What else? Of yes,I have great historical backgrounds on just about every arhceological and historial site.So that wont be a problem for me either.
If anyone is doing research and need a little help:i will gladly had over what I have.
My forte is not yet 3D,but I do have one heck of a mping program (I can make my own or copy ancient maps) so this is probably where I can be of most help.
Like I said,let me know if any of this sounds interesting.
Id love to help :)

P.S. I think I forgot to mention that my maps are both ancient and modern. I have a bout 500 books at home,200 of which only deal with archaeology and history, so I can pretty ,much find just about any thing