Student Visa with Dependent (wife)?

You double posted this, I think, and the other posting was removed with my reply. So here again:

I am not sure if a student visa holder can bring dependents. I think not, but please confirm with your nearest German embassy.
IF it is possible, you need to show
    - sufficient income (8000/year per person is the minimum to survive)
    - sufficient living space (rental apartment for two people)
    - health insurance (If you're eligible, i.e. below 30 years old and no employment income, try to include her in your subsidized student insurance which costs 80/month. If not, you'll have to pay a lot more, possible 350/month per person!)
Alternative to dependents visa is a work visa on her own merits, but this is difficult to get for a non-EU citizen and she needs a job offer first.

By the way: You posted, all within a few weeks, that you want to
- work in Finland or elsewhere in Europe
- study in Finland
- study in China
- and now study in Germany.
Are you for real? Confused? What do you really want???