On March 22, 2022, the novel coronavirus epidemic in Longhua District, Shenzhen, was notified by the Office of the Prevention and Control Headquarters (No.20). According to the needs of epidemic prevention and control, Longhua District has designated closed control zones and control zones in relevant areas of Zhi Min street since March 16, 2022. 1. Closed control area: Xitou Old Village, Shangfen Community, Zhi Min Street/No.0/3, No.46. The implementation of "closed area, home service, nucleic acid testing door-to-door service". 2. Control area: No.9, 1 1, 15 and 17 on Shangfen West Road, No.23 on Longfa Road 15 and 17 on Zhi Min Street. Strengthen management in the first 4 days, and implement "home-based, nucleic acid detection and door-to-door service". From the fifth day to the end of the control, the management measures of "stop frame management, stay indoors, and take things at the wrong peak" will be implemented. If it is found to be positive, it will immediately turn into a closed control area.