What does it mean that there are more than four or eight X's missing from the ID card?

China's current resident identity card is a national unified number, which consists of fifteen Arabic numerals. Every citizen has a number. According to the number of people born in the same year, month and day, the serial numbers and codes are reasonably allocated in the fixed order of each county. Not heavy, not leaking, okay. The meaning of numbering arrangement is:

1, the first 6 digits are administrative division codes;

2. The number 7- 12 is the date of birth code;

3. The number 13- 15 is the allocation sequence code;

(1), the administrative division code refers to the administrative area where the permanent residence is located when a citizen first applies for a resident identity card.

(2) Date of birth code. The 7th-8th digits represent the year (the first two digits of the year are omitted), and the 9th 9- 10/0 digits represent the month (the month is preceded by an L digit with a zero). The number 1 1- 12 represents the date (the number of 1 starts with zero).

(3), the distribution sequence code, is according to the number of people in a fixed order unified and reasonable distribution to everyone's sequence number, the last digit is odd distribution to men, even distribution to women.

Is the new ID number still the same as the old ID number, with odd numbers for men and even numbers for women?

The State Council stipulates that starting from 1999 10+00, a national ID number system will be established and implemented.

The citizen ID number is compiled according to the national standard GB11643-1999, and consists of 18 digits: the first six digits are the administrative division code, the seventh to 14 digits are the birth date code, and the first/kloc-

The number 18 is a check code, which is used to check the correctness of the ID number. It is randomly generated by a computer, so it is no longer singular for men or even women.

X stands for 10 and has no special meaning.