Health codes are divided into three colors: green code, yellow code and red code.
Red team scope: confirmed patients, suspected patients, asymptomatic infected persons, close contacts with confirmed patients and medical observers.
Yellow code range: non-confidential colleagues of the national diagnosed personnel, those who have fever, fatigue, cough, diarrhea, conjunctival congestion and other discomfort symptoms such as registration, observation and bayonet records of fever clinics, people from other provinces, and key personnel who punch in less than 14 days outside the province.
Green code range: it means that there are no symptoms at present and the health status is basically normal. People can move, return to work and resume production. The validity period is 3 days, and the health card must be punched in within 3 days, otherwise the health code will be changed to "Gray code".