It is based on your identity information and your city location at that time, and then generates a health code for you.
This health code cannot be changed at will.
If we can modify the health code, then this thing has no meaning.
The invention of health code is also to make us have a more convenient identity confirmation in different cities or different places.
This not only ensures your safety, but also ensures the safety of others, which is convenient for us to analyze and track big data now, so don't think about modifying this thing, and it is impossible for you to modify it.