Is there a hint that the code turns yellow?

When the health code changes to Huang, there will be no SMS reminder, and it will only be displayed after you open the health code yourself. Therefore, you need to take precautions. During the epidemic, it is suggested that it is best to reduce unnecessary flows. If you have never been to a high-risk area, the health code will not turn yellow.

However, if you have been to the middle and high risk area, the stay time is more than 4 hours; Or it has overlapped with confirmed cases or asymptomatic infected people in time and space, then the health code may turn yellow.