The time figures on the health code are all in Song Dynasty, which looks more uniform.
The two-dimensional code pattern of the health code will change every time you view it, but the information scanned by the two-dimensional code will not change. They are all their own health information, such as entry and exit situation, fever symptoms and so on. Therefore, everyone has a unique digital health code. This string of numbers is different from the QR code and will not change. Just like the mobile phone number, it belongs to personal authentication information.