Denotes the postal routing area within the province, specifically for the Jiamusi region.
Interestingly, Taiwan also uses a 6-digit system (often formatted as 3+3), where "100" refers to the Zhongzheng District in Taipei City. 156100 zip
In the Chinese postal system, each digit in helps narrow down the location: Denotes the postal routing area within the province,
U.S. ZIP codes are typically 5 digits (e.g., 90210). A 6-digit number like 156100 would not be a valid standard U.S. ZIP code, though it could potentially appear as the start of a longer ZIP+4 code if it were in the northeast (where codes start with 0 or 1). Postal Code 156100 - Fujin, Heilongjiang - Cybo specifically for the Jiamusi region. Interestingly