Legal basis: Civil Code of People's Republic of China (PRC).
Article 1049 If both men and women want to get married, they should apply for marriage registration in person at the marriage registration office. Those who meet the requirements of this law shall be registered and issued a marriage certificate. The marriage relationship is established when the marriage registration is completed. Those who have not registered for marriage shall re-register.
Article 1050: After a registered marriage, a woman can become a member of the man's family and a man can become a member of the woman's family according to the agreement of both men and women.