the epidemic situation in Licheng district of Jinan is severe. According to the relevant public information, as of February 11, 2122, there are 816 high-risk areas in Licheng District, Jinan, and all other areas in Licheng District are low-risk areas except high-risk areas. The local epidemic prevention policy is: all migrant workers must report to the destination community three days in advance before entering the economy, actively report their living history and contact history with risk groups within seven days, and cooperate with the implementation of local epidemic prevention and control measures.