Generally refers to the postal code of your current permanent address. The postal code consists of Arabic numerals, which represents the special code of the post office that delivers the mail, and is also the communication code between residents and units within the delivery range of this bureau. China adopts a four-level six-digit coding system, which consists of six Arabic numerals. The first two represent provinces, municipalities and autonomous regions, the third represents postal areas, the fourth represents counties and cities, and represents delivery post offices. The last two represent the delivery areas of this city, that is, the location of the delivery areas.

For example:

53040 1 is the postcode of xinqiao town, Binyang County, Nanning City, Guangxi Zhuang Autonomous Region.