You are too much of a zhongguo tong methinks!

I don't understand....Ta dao di na li tong le? I thought "tong" in this case meant the character which represents "in the know". Maybe it's the literal sense of "tong" sina style :) ?

Yes, well, I thought that he was being strangely complimentary to me; however, you have maybe accidentally got it right. He should have said 'ta dao di na li tong le' which means 'What on earth do you know about China?' Get it? got it? good.