If there is an asterisk on the travel itinerary, but you have only been to the middle and high-risk areas, but you have never been to the middle and high-risk areas, this kind will generally not change color or turn yellow. If there is an asterisk on the travel itinerary, if you go to the middle risk area, you will probably change color, yellow or red team. This is the isolation test.
The color of travel itinerary is yellow, indicating that you have entered a moderate risk area. Self-isolation 14 days, yellow turned green, normal phenomenon.
Travel card is the code of big data travel card, which is also equal to health code. This product is the data received by China Information and Communication Research Institute, China Telecom, China Mobile and China Unicom, and the data obtained through mobile phone positioning points provide free inquiry service for 654.38+06 billion mobile phone users nationwide. In the past 14 days, mobile phone users can query all the regional data I have visited.