About the function of health code?

The function of health code is not to prove that you are healthy, otherwise you are not allowed to declare your physical condition and then report it. It is actually similar to the QR code of an electronic identity. Its function is not only to report personal health, but also to master your action track. For example, when you enter a supermarket or take a bus, subway, plane or train, you will be required to scan the healthy green code!