If you marry a German, you can apply.
3. People who have permanent residence permits from other EU countries and work contracts in Germany can start to apply.
4. You can also apply for a company in Dekai, work for a certain number of years and pay taxes to a certain extent. The specific tax payment is not clear. Refugee status seems to be only permanent residence status, after all, it is a non-immigrant country. After the application, there are related procedures such as language examination and qualification examination.