(German immigrants) Parents are now German citizens and their son is a citizen of China. How to get my son out of this country?

According to what you said, there is no possibility for children to be naturalized directly. Foreign children can apply for naturalization at the same time as their parents, unless their parents have been in Germany for three years and are still below 16 when applying for naturalization. Otherwise (for example, you are 18 years old, or have lived in Germany for less than 3 years), you must live independently in Germany for 8 years to become an indefinite person or a German.

Requirements for applying for a family reunion visa:

Article 28 (1) of the new immigration law "Family members reunite with Germans" stipulates three kinds of family members who can reunite with German citizens: one is the spouse of a German; Second, the underage unmarried children of Germans; Third, underage unmarried Germans will take care of this person's parents. The rules about the third person are biased towards the Germans. )

With a family reunion visa, if you can simply communicate German orally and stay in Germany for three years, you can get a residence permit.

Since you mentioned naturalization after smuggling and being accepted as a refugee, I'm afraid there are restrictions or strict requirements for family reunion.

If the conditions for family reunion are not met, it basically doesn't matter whether the parents are German or not.

If you have a restaurant at home, you can consider taking labor. Or if your children plan to study in German universities, you can apply for studying abroad. This kind of residence permit is a visa with a time limit. Only when the child meets the requirements of naturalization or residence permit can he apply separately.