3+ 1 1 control can't cross the city, 3-day home health monitoring, 1 1 day follow-up health monitoring, home health monitoring measures refer to a single person living alone, and intelligent door magnets are installed. Strict health monitoring measures refer to the strict implementation of crowd gathering activities such as not taking public transport, going to school and work, not going out to watch movies, plays, exhibitions, not eating dinner, not receiving visitors, not attending parties and lectures, not going through urban areas, not going to crowded places such as shopping malls, supermarkets, office buildings, restaurants and playgrounds, and not going to closed environments such as theaters, chess rooms, KTV, script killing and escape rooms. Follow-up health monitoring measures refer to being able to go to work and not attending various parties and meetings.