The asterisk "*" in the upper right corner of the visiting place indicates the cities with medium and high risk areas in the past 14 days, but it does not mean that users have actually visited these medium and high risk areas. Note: The asterisk "*" has nothing to do with the user's personal health status, but is only used as a reminder sign including cities in medium and high risk areas, which is convenient for managers to check.
When the user's trip in the past 14 days does not include cities in medium and high risk areas, or the modulation risk at the risk area level is low, the asterisk will disappear automatically.