Symptoms of novel coronavirus infection are malaise, fever, dry cough, and difficulty in breathing, and signs of improvement after infection are a reduction in these symptoms. Some people with good resistance can recover spontaneously in about 1 week. Due to the shortage of resources in hospitals and the risk of cross-infection, it is not recommended to go to the hospital when the symptoms of mild infection appear, but to isolate yourself at home and observe for 14 days. If the disease does not improve, go back to the hospital.