The People's Republic of China (PRC) Household Registration Ordinance does not require the registration of names at birth. It is only required that the name change shall not disturb social order, public order and good customs, and submit an application for change to the public security household registration department.
the marriage law of the people's republic of china
Article 22 A child may take his father's surname or his mother's surname.
The Regulations on the Registration of Geographical Names in People's Republic of China (PRC) (Draft) is the circulated draft of the internal administrative regulations of the public security system.
Article 8 A citizen shall take his father's surname or his mother's surname. Both parents' surnames are allowed.