Xiao Xueya: What does the ID card mean?

Xiaoxue ID card represents a legal document to prove the identity of the holder. According to relevant information, it is a legal document used to prove the identity of the holder, which is mostly issued to citizens by governments of various countries or regions. 1-2. 18 The first two digits of the ID number represent the code of the provincial government. Three or four people. 18 digit ID number is 3-4 digits, representing local and municipal government codes. Five or six people. ID number 18 digits 5-6 represent the county and district government codes. The 7th-14th digit indicates the date of birth. The numbers 15 and 16 indicate the codes of local police stations. The number 17 indicates gender: odd numbers indicate men and even numbers indicate women. 18 is a check code: some people say it is a personal information code, which is randomly generated by a computer to check the correctness of the ID card.