I think the last place a hospital should refuse others to see a doctor is because there is no nucleic acid and yellow code! If the person who went to see a doctor is really a COVID-19 patient, but because there is no nucleic acid or because of the yellow code, the patient has to continue to solve this problem outside. Who knows how many people he contacted during the period? Hospitals should come up with better countermeasures against these problems. You should pay more attention to these patients who come to see a doctor instead of refusing to go out!