You can consult the big data center. When you return to the low-risk area, the health code will not change. As long as you fill in the itinerary truthfully, the health code will still return to the page without abnormality.
If you have been to a high-risk area or a city with a local epidemic report within 14 days, or shared a car with a confirmed case, or crossed the activity track, the health code will turn red or yellow. At this time, it is necessary to report to the community at the first time, accept management and cooperate with epidemic prevention and control measures.