The YWCA offers a lot of really good, reasonably priced classes and will be close to you if you're living somewhere close to Central. They're listed on their website. There is also a serious play group culture here, I'm sure you can find one once you arrive. There are also plenty of businesses offering classes, including Kids Gallery, Little Gym, TumbleTots. And then, since you're only here for 6 months, there are wonderful little adventures for a parent and 3 year old--bus rides around town, a walk through a street market, the fish market (live tropical fish--my 3 yr old LOVED it), some easy hikes in the hills. Don't worry, Hong Kong will take good care of you, just start fortifying her immune system now because kids get sick a lot upon arriving here. :gl: