The asterisk on travel itinerary indicates that there is a medium-risk or high-risk area in the city that arrived or passed before 14 days, so generally speaking, if the area is adjusted to low risk, the asterisk on travel itinerary can be automatically removed. However, because the data of travel codes are generally updated once a day, the disappearance of asterisks may also be delayed. In addition, if the user leaves the risk area 14 days, the asterisk on the travel card will disappear automatically.