If red team is to be changed to a green code, it will be automatically changed to a "green code" after the centralized and isolated medical observation management is completed.
Yellow code personnel will go to the nearest medical institution or third-party testing institution for nucleic acid testing in time. After the test result is negative, it will be automatically adjusted to a green code. Those who hold a 48-hour valid negative certificate of nucleic acid detection shall be identified by the local prevention and control department and turned into a "green code" after reporting to the provincial level to perform relevant procedures.