The new coronavirus can survive for several hours on the surface of a smooth object, and if the temperature and humidity are right, it can survive for several days, and some studies have found that the coronavirus may survive up to five days. However, there will be no virus in the air because the virus will quickly settle and contaminate the surface of objects, such as elevator buttons and door handles, after coming out of the body, and will not drift in the air. The incubation period for novel coronavirus pneumonia is 1-14 days, with most being 3-7 days. Transmission is mainly via respiratory droplets, contact transmission, or the possibility of transmission via aerosols in relatively closed environments with prolonged exposure to high aerosol concentrations. The main manifestations are fever, dry cough, and malaise, and the prognosis is mostly good.