is closing down. At present, Xi 'an is a medium-risk area, and all crowded places are closed, including the Grand Hyatt Hotel. On April 11, Liu Guozhong, secretary of the provincial party committee, went to Xi 'an epidemic prevention and control headquarters to inspect the epidemic prevention and control work. He stressed that it is necessary to resolutely implement the general strategy of "external defense input, internal defense rebound" and the general policy of "dynamic clearing", be strict and detailed, do a good job in arranging logistics practitioners and migrant workers in key areas, and strictly control the entry into the provincial market, do a solid and effective job in normalization prevention and control, and resolutely hold the bottom line of no large-scale rebound of the epidemic.