As of 202 1, 1 1, Changsha is not a high-risk area. As long as you stay in the high-risk area for more than two hours, your health code will change color.
The most important part of health code is mobile phone location based on mobile phone number, consumption record, travel and plane record based on ID number, filling in travel information or scanning scene location registration, etc. , and combined with the epidemic situation, big data analysis shows the results.
The two-dimensional code of the electronic health card has three colors, and different colors represent different grades: the first color is green, which can be used for normal travel, but if you have lived in a middle-high risk area or epidemic area in the past 14 days, you should carry out nucleic acid testing or provide qualified test results for 7 days; The second is yellow, which restricts travel and accepts nucleic acid testing. You can travel with the negative certificate of nucleic acid test in the last 7 days, but you are not allowed to enter and leave schools, factories, large shopping malls, large farmers' markets and other crowded places and relatively closed places. The third type is red, and it is forbidden to travel. You should contact the local community (villagers' group) or the county (city) district CDC as soon as possible to accept centralized isolation medical observation.