The health code is based on the actual real data, which can be generated by citizens or people who have returned to work on their own online declaration and background audit. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly.
After the health code changes color, there will be no prompt. I need to open the health code to display the changed health code, and report it as soon as possible after the health code changes color, so as to protect myself. However, after the health code changes color, don't worry too much. The discoloration of the health code does not mean that COVID-19 will be infected. As long as the nucleic acid detection or centralized isolation is carried out according to the relevant regulations, the health code will return to the green code.