I received a message. It turned red, but it didn't.

Verify where you see it sent to you, and then open the health code of the corresponding province to see if it is a red code. The operation method is to open the Alipay health code, with a city name in the upper left corner, and click to switch the corresponding city in the short message (at the beginning or end of a normal short message, which institution sent it, such as the epidemic prevention and control office of a province or city). It's still a green code after switching. You can check whether there are any reasons for the red code mentioned in the short message, such as close contact, inter-provincial travel, and going to medium and high-risk areas. The actual situation also exists and needs attention. You can contact the local prevention and control consultation.