How old are they?

If you are a student, they cannot be that old. You can get your citizenship a few years. Then you can get them to immigrate to US (or whichever country you are in).

One thing I (and a lot others noticed) is that people in China feel "old" when they are actually only around 60 years old. Their mentality is just waiting to die. So if your parents are among them, it is your job to inject "life force" into them.