Legal basis: Article 13 of the Regulations of People's Republic of China (PRC) Municipality on Household Registration. When a citizen moves, he shall submit a migration certificate to the household registration authority for registration, and submit the migration certificate within three days in the city and ten days in the countryside. (1) Demobilized, transferred to other jobs and veterans shall show their certificates issued by military service organs at the county or municipal level or at or above the regiment level; (2) Overseas Chinese and returned students shall show their passports or entry certificates of the People's Republic of China; (3) A person released by a people's court, a people's procuratorate or a public security organ shall issue a certificate from the releasing organ.