If you are having trouble with in zip files, you may need to adjust your system locale or use the 7-Zip command line to handle specific encodings like GBK or Big5. 2. China Postal (Zip) Code Datasets

Official Chinese resources and repository information can be found on platforms like GitHub (sparanoid/7z) , which hosts the Chinese homepage and localized packages.

China uses a six-digit numerical system for its zip codes (e.g., Beijing is 100000).