legal ground
Article 7 of the Regulations of People's Republic of China (PRC) Municipality on Household Registration.
Within one month after the baby is born, the head of the household, relatives, dependents or neighbors shall declare the birth registration to the baby permanent residence registration authority. If an abandoned baby is abandoned, the adopter or the infant-rearing institution shall declare the birth registration to the household registration authority.
"Regulations on family planning work of floating population" sixteenth
Couples of childbearing age who have given birth to their first child can go to the township (town) people's government or sub-district office where they now live to register for maternity services. For the registration of maternity services, the following certification materials shall be provided:
(1) Resident identity cards of both husband and wife;
(2) marriage certificate;
(3) the marriage certificate of the woman and the marriage certificate issued by the township (town) people's government or sub-district office where the man's household registration is located.