Legal analysis: Kaifeng City has now been unblocked. After the epidemic is cleared, the lockdown will generally be lifted after further observation and 7-14 days. Because the incubation period of the new coronavirus is 7 to 14 days, if there are no new confirmed cases or suspected cases in an area for more than 14 days, the control can be lifted. However, whether the lockdown can be lifted specifically still needs to be subject to local regulations.

Legal basis: "Law of the People's Republic of China on the Prevention and Control of Infectious Diseases" Article 39 When medical institutions discover Class A infectious diseases, they shall promptly take the following measures: (1) Treat patients and pathogens Carriers will be treated in isolation, and the isolation period will be determined based on the results of medical examinations; (2) Suspected patients will be treated in separate isolation in designated places before diagnosis; (3) Close contacts of patients, pathogen carriers, and suspected patients in medical institutions If necessary, conduct medical observation and take other necessary preventive measures in designated places. For those who refuse isolation treatment or leave isolation treatment without authorization before the isolation period is over, the public security organs may assist medical institutions in taking compulsory isolation treatment measures. When medical institutions discover patients with Category B or C infectious diseases, they shall take necessary treatment and transmission control measures according to their condition. Medical institutions must disinfect and harmlessly dispose of sites, items and medical waste contaminated by infectious disease pathogens in accordance with laws and regulations.