The new coronavirus antigen test kit has two indication points, C and T. If a red bar appears at C, it proves that you are not infected with the new coronavirus; if a red bar appears at both C and T or at T, it means that you have been infected with the new coronavirus; if a red bar does not appear at C, it proves that the test result is invalid, and you need to repeat the test. When the antigen test is negative, you can have normal activities and be retested regularly according to the requirements of the local epidemic prevention command. When the test result is positive, asymptomatic infected persons can be isolated at home and regularly rechecked, while mildly or severely infected persons need to be treated and isolated in designated hospitals. It is recommended that people who need it should follow the guidance instructions to retain specimens for testing in a correct and standardized manner.