"Liaoning Province Population and Family Planning Regulations" Article 17 couples who have given birth for the first time shall, after pregnancy, go to the township (town) people's government or sub-district office where the woman's household registration is located to apply for birth registration free of charge with their household registration book, marriage certificate and proof of marriage and childbearing at their work unit or village (neighborhood) committees. Twenty-third has reached the legal age for marriage but did not fulfill the formalities of marriage registration, by the administrative department of family planning written notice to handle the marriage registration within 3 months; Those who fail to obtain the marriage registration certificate within the time limit shall be treated as having children who do not meet the statutory conditions.