I am new to PB, like you, but I DO live in Japan, so maybe I can offer some advice. If Hong Kong is anything like where I live, it can be really hard to get organic anything, but here are some things I'd try.
1) If you have any friends/coworkers etc who are native speakers, ask if them if they could do a little research and see whether they can find details of any organic shops/butchers/farmer's markets in your area. A friend did this for me and it was really helpful.
2) Head onto one of those online Chinese dictionaries, and search for the most important terms and print out a reference sheet. Or you could ask the aforementioned friend whether they could compile a list of ingredients and so on that you want to locate in the supermarket. You could also try asking people in-store whether they stock organic, and get them to show you the best products for you.
3) Just do the best you can and resign yourself to the fact that you simply can't get everything you'd like to. Figure out what Hong Kong does the best, and go for that. There are some things that are basically impossible to get hold of in Japan, so I guess it might be the same for you too.
In any case, don't let yourself get discouraged. Do the best you can in the situation and don't worry that it's not perfect. At least, that's what I do!
I hope this is helpful.