How to change health code from 72 hours to 24 hours?

The change of health code from 72 hours to 24 hours requires nucleic acid testing. After the nucleic acid test, you will record and display your mobile phone health code within 12 hours. The health code will change from 72 hours to 24 hours. If your personal nucleic acid test time is 24 hours, the health code is blue, and if it is within 48 hours, the personal health code is purple. If it exceeds 48 hours, the health code will turn green. This difference in background color of health code is to transfer people more quickly in all future detection windows. Avoid the hidden danger of concentrated infection.