2. The electronic health codes are green, yellow and red. It is based on the comprehensive information of all kinds of people who come into contact with every day where everyone is and where they are traveling.
3. Green stands for normal, yellow stands for poor and red stands for danger. Each code holder needs to take a screenshot with his mobile phone and save the color map of the day for inspection. Code holders should consciously fill in relevant information every day. The health code is only for citizens to fill in and use.