Unless you take the initiative to provide the relevant information and evidence of your marriage abroad to the relevant Chinese authorities, the marriage abroad will not be found in China. If you volunteer, the country will also recognize your marriage relationship abroad.
1. If the parties do not provide the relevant materials and evidence of marriage abroad to the relevant Chinese departments, the domestic Civil Affairs Bureau does not have the relevant marriage materials and files of the parties, and can not find out whether you are married or unmarried. If the parties provide relevant materials and evidence of marriage abroad to the relevant Chinese authorities, the domestic civil affairs bureau will also recognize the foreign marriage relationship.
2, if your marriage in a foreign country involves these problems involving legal crimes, China will be able to investigate your marriage in a foreign country strictly.
(3) If you deliberately conceal your marriage abroad and register your marriage in the country again, once verified, it is a crime of bigamy.