Hello, you want to ask what is the 2021 Yan'an epidemic sealing time? Through the query related information shows: 2021 Yan'an epidemic sealed city time is December 31, 2021 zero. According to the epidemic prevention and control requirements, Yan'an urban area from December 31, 2021 at zero o'clock to start sealing the city. In order to ensure that the epidemic prevention and control period, students studying in Yan'an can go home safely, Fu County county party committee, the county government decided on December 30th unified in Yan'an to go to school in Fu County students to pick up back to Fu County.