That is to say, you went to the high-risk area yourself, so your health code turned orange. If you don't go to high-risk areas, your health code is green. When the health code changes from green to yellow and orange, it will affect travel. You can't take the bus, subway or enter some public places. Under normal circumstances, if you complete the "two tests in three days", that is, you complete the nucleic acid test twice in three days, the travel code and health code will change back to green.