What does health code research mean?

Study and judge health codes. Health code judgment refers to the research and judgment of health code. "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. Judgment, a Chinese word, means research judgment.