If it is not filled in correctly, the health code information will change color.
The discoloration of the health code does not mean that you are a close contact or have been infected, but that you have been to the risk area, so don't worry, you can go to the relevant hospital for nucleic acid testing, or you can directly show the yellow code to the hospital staff for direct testing.
When your nucleic acid test result is negative, the system will remove the yellow code and convert it into a green code. If there is no nucleic acid test result, and the yellow code of 14 days has been assigned under no special circumstances, the system will automatically clear the yellow code and turn it into a green code.