Longer stay. I currently hold a multiple-entry Q2 visa.

David, you'd better visit the entry and exit management bureau in Dalian and ask if you can change your Q2 into a long-term resident permit for family union. If they require you to get back to your country apply for Q1, then you have no choice but follow their advice. In this case, you should prepare the invitation letter from your Chinese wife, a copy of her Chinese ID card (both sides) and your marriage certificate to apply Q1 from the CVASC center in Johannesburg.

If they agree that you can change your Q2 into resident permit directly, then you should prepare these documents:
1. filled temporary accommodation registration form. You should register at local police station within 24 hours every time you arrive. Then they give you this form.
2. filled visa application form
3. a recent passport photo
4. original and copies of your passport information page and your Q2 entry permit
5. invitation letter from your wife and a copy of her Chinese ID card (both sides)
6. your marriage certificate (original and copy versions)

If you apply for a longer resident permit longer than one year, then you should also provide the physical examination record issued by Liaoning Entry-Exit Inspection and Quarantine Bureau located at no.60, Changjiang East Road, Dalian.