After consulting the national government service platform, we know that the health code changes according to the risk level of mobile phone positioning. If the mobile phone is not located in a high-risk area, the health code will not change. For specific information, please pay attention to official website for first-hand authoritative information. The identification of health code color is mainly based on the actual geographical location of my mobile phone, and it will not change the color of health code with the change of virtual location, thus ensuring whether I really went to a high-risk area.
"Health Code" is a tracking and judging system of personal health information and activity information for epidemic prevention and control in COVID-19. The personal QR code will be generated after the online declaration by the individual, which can be used as an individual to declare once in a certain area of the electronic certificate and be used locally.