地址码 (身份证前六位)表明编码对象常住户口所在县(市、旗、区)的行政区划代码。 生日期码 (身份证第七位到第十四位)表明编码对象出生的年-Address code (ID card top six) to indicate the encoding target permanent residence county (city, banner, district) administrative division code. Birth date code (ID seventh to four