The old household registration could have obtained a marriage certificate. Both men and women who want to get married should go to the marriage registration office in person to apply for marriage registration. If they meet the provisions of the law, they shall be registered and issued a marriage certificate. The marriage relationship is established when the marriage registration is completed.
Legal basis:
Article 1049 of the Civil Code of the People's Republic of China
Both men and women who request marriage shall apply for marriage registration in person at the marriage registration office. Those who meet the provisions of this Law shall be registered and issued marriage certificates. The marriage relationship is established when the marriage registration is completed. If no marriage registration is handled, it shall be re registered.
Article 1050 of the Civil Code of the People's Republic of China
After the marriage is registered, the woman may become a member of the man's family and the man may become a member of the woman's family according to the agreement between the man and the woman.