The file extension refers to a compressed archive created with 7-Zip , a free and open-source file archiver.
7-Zip uses for file names, which means it natively supports Chinese (Hanzi) characters. If you extract a file and the names appear garbled, it is usually an encoding issue with the specific unzipping tool or your operating system's non-Unicode settings. 7-Zip is free software with open source. China.7z
: Use the built-in Archive Utility (if updated) or third-party apps like Keka or The Unarchiver . The file extension refers to a compressed archive
: Apps such as iZip or ZArchiver can extract these files on smartphones. Technical Note on Chinese Characters China.7z