The meaning represented by the ID number: 1-2 codes of provinces, autonomous regions and municipalities directly under the Central Government; 3-4 digits of code of prefecture-level cities, leagues and autonomous prefectures; 5-6 county, county-level city and district codes; 7- 14 date of birth, such as 1967040 1 representative 1967 April1; The number 15- 17 is the sequence number, in which 17 (the penultimate place) is the singular number of men and even women; 18 bits are check codes, 0-9 and x.

Identity card: It is a document used to prove the identity of the holder, which is mostly issued to citizens by governments of various countries or regions. Law enforcement process: The basic process of applying for a permit is as follows: A citizen should go through the application formalities at the public security organ where his permanent residence is located within three months from the date of reaching the age of 16, submit his household registration book and his photo, fill in the registration form for applying for a resident identity card, and pay the application fee. If a citizen under the age of 16 voluntarily applies for a resident identity card, his guardian shall apply for a resident identity card on his behalf.