Legal analysis: Xinyang is a low-risk area, but you need to show your health code and travel card when entering and leaving. The health code is based on the actual data, and citizens or people who have returned to work can declare it online by themselves, and generate a personal QR code after background review. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The promulgation of the Health Law aims to make the resumption of work more accurate, scientific and orderly. Travel card generally refers to communication big data travel card, which is a free inquiry service for 654.38+06 billion mobile phone users nationwide, which is obtained by China Xintong Institute, China Telecom, China Mobile and China Unicom through the location of the base station where the users' mobile phones are located. Mobile phone users can query all the city information they have visited in the previous 654.38+04 days through this service. The substance of nucleic acid detection is the nucleic acid of virus. Nucleic acid detection is to determine whether the patient is infected by COVID-19 by detecting whether there is nucleic acid of foreign invasive virus in respiratory tract samples, blood or feces. Therefore, once the nucleic acid is detected to be positive, it can be proved that there is a virus in the patient.

Legal basis: Article 42 of the Law of People's Republic of China (PRC) on the Prevention and Control of Infectious Diseases. When infectious diseases break out and are prevalent, the local people's governments at or above the county level shall immediately organize forces to carry out prevention and control according to the prevention and control plan and cut off the transmission route of infectious diseases. When necessary, it shall be reported to the people's government at the next higher level for decision, and the following emergency measures may be taken and announced:

(1) Restrict or stop fairs, theatrical performances or other crowd gathering activities;

(2) suspension of work, business or classes;

(three) closed or sealed public drinking water sources, food and related items contaminated by infectious disease pathogens;

(4) controlling or culling wild animals, domestic animals and poultry infected with the epidemic;

(five) closed places that may cause the spread of infectious diseases.

When the people's government at a higher level receives the report of the people's government at a lower level on taking the emergency measures listed in the preceding paragraph, it shall make a decision immediately. The lifting of emergency measures shall be decided and implemented by the original decision-making organ.