Holding a deep breath for another ten seconds will not detect the presence of neo-coronary pneumonia. Patients with New Coronary Pneumonia will have fever, cough, shortness of breath, and even shortness of breath, and CT and nucleic acid tests can be used to confirm the diagnosis if necessary. Even if there are no signs of pneumonia, if there is a fever and a history of close contact, it is important to seek medical attention as soon as possible. Deep breathing and holding it for ten seconds is not scientific and meaningless, and self-testing is not recommended to avoid unnecessary worries. For example, airway spasms and airway hypersensitivity disorders may cause paroxysmal or persistent coughing after a deep breath or even if you do not take a deep breath, but this does not mean that pneumonia is present. Many people in this category go for pulmonary function which is also normal, no fever, no chest tightness, and normal heart and lungs.