In fact, how did the health code come from? It's nothing more than using some big data to update information in time, whether there are COVID-19 patients around you, or evaluating your chances of getting COVID-19. For example, if you are in some high-risk areas, your health code may change color, but if you are in a low-risk area like Chongqing where there are no COVID-19 patients for a long time, then your health code is healthy. But you can't just prove your health by health code. After all, it's just big data behind the scenes. Although big data can explain and prove many things now, there will still be some leaks.
If a person does not have a health code and there are ways to prove that he is in a healthy state, such as providing your recent travel status to ensure that you have not been to those high-risk areas and places you have been to, and there are no COVID-19 patients, then you can basically be sure that you are in a healthy state. Similarly, you can also provide your nucleic acid detection certificate. If your nucleic acid test is negative, then you can definitely prove that you are not a patient in COVID-19. Things like these can prove that you are in good health. But what I want to say is that a person must have a health password. As long as you scan the code to get the health code, it is generally ok. However, the country now uses health codes for travel and certification. It really takes a lot of thought to prove that this person is at least healthy to some extent.
Secondly, in this case, in fact, you don't need to show your health code when traveling in a certain area. For example, you don't need to show your health code when you go to some supermarkets or when you are around. Of course, because the epidemic situation in the country is repeated, you still need to show your health code to the staff when you go to the hospital. Generally, cross-regional tourism will be used when entering the railway station.
I have already said how the Health Law works. He mainly evaluates your health through big data. For example, if you get on a train while traveling in other places, and it is finally detected that one of the people in this train is COVID-19's patient, then your health code will immediately change color. Or relatives around you, or there is a COVID-19 patient in your residential area, then your health code will also change color to show others that you are in danger.