1. People returning from key infected areas such as Hubei and close contacts of diagnosed cases; 2. People who have not been in contact with infected people, if they have symptoms such as runny nose, sneezing, sore throat, fever, but no breath-holding sensation, and their body temperature does not exceed 37.5℃, they can be temporarily observed at home. However, if the body temperature exceeds 38℃, or if shortness of breath occurs, you should seek medical attention as soon as possible. Warm tip: Those who are under observation at home need to stay in a separate room for isolation, while paying attention to cleanliness and disinfection, while those who do not have the conditions for observation should be reported to the local community, street, township party committee and government to implement centralized medical observation.