My feeling about it: I belong to nowhere but wherever my heart is. (In my case, at least, that's what I think..)

It is, indeed tough having to leave a place where you've grown so accustomed to; and yet it is (at the same time) ironic to be forced to abandon that part of yourself because of external complexities that we have no control of. However, this does not mean that we have totally lost a part of ourselves, or our roots, for that matter. Maintaining one's roots do not necessarily require that you stay in a place where you're very familliar with. Neither do we need to have something physical just so we'll recognize it. Ultimately, we just have to know ourselves well (by that I mean through and through) and to accept whatever history it is that made up who we are right now (whether it's good, bad, or even those that we might find not ideal). For instance, we used to be a bit ashamed to admit that we come from a very Fujian family (admit it! :p ). Maybe because I was born and brought up in a Western-influenced society; and in your case, probably because (I'm just assuming) you felt that HK people show disdain towards others who speak Mandarin and Mainland dialects other than Cantonese. But as we grow older (and hopefully wiser!), we realize that this unique identity that we have made us stand out from the rest of the herd in a lot of ways. Perhaps, this also made us so special that we are able to do things that other people may not be capable of. This, I believe, is what we call our identity; a recognition of our roots painstakingly mustered through the years.

So look who's trying hard to speak in Mandarin nowadays?  

Jane