Sounds like a plan.
Easy. If she's important to you AND it's a big opportunity for her AND you can stay with your employer (in a roll that's ok for you), then you go. So what if Asia's nice, try Canada for a few years. Hopefully you'll both do well and if in the future you want to settle...
Very good of you to move to Hong Kong for her. If your current employers allow you to move again, I say go for it, it will be fun. But if not, you run the risk of moving to a foreign country and not having a job, and I don't think that's a good idea. If you can't get a job there, u could well be...