How long can I get a green card after I get married to Belgium?

You can get a green card in five months. Now it seems that there are many requirements for acquiring nationality. You need to provide a lot of materials before you get married, or apply for a marriage visa to get married. Getting a green card is equivalent to permanent residence. You can observe for several months after marriage, but permanent residence after divorce is invalid. In addition, China does not support dual nationality, so in order to obtain Belgian nationality, it is necessary to give up China nationality.