The health code is divided into three colors: green, yellow and red, which represent my risk status under the epidemic situation. The green code is safe.
"Health Code" is a mandatory tracking and judging system of personal health information and activity information for epidemic prevention and control in COVID-19, which is declared by individuals themselves online. After background audit, a personal QR code can be generated, which can be used as an individual to enter and leave electronic certificate in a certain area, so as to realize one-time declaration and be used locally.