Hello pro, according to the query: this needs to be based on whether there is a new situation to decide Oh, 1, Xuzhou Pizhou City currently belongs to: normalized prevention and control areas 2, the risk of when the area can be unsealed: generally 14 days can be unsealed, and the specific to see the closed area whether there are new cases. 3, the risk of implementation of the area "outside the import, internal proliferation prevention ", as soon as possible to restore the normal order of production and life in an orderly manner, organizing the orderly return of personnel, guiding the strict implementation of disinfection, ventilation, temperature measurement and other requirements of enterprises, reduce personnel density, reduce the number of people gathered to strengthen the protection of personnel, to eliminate the risk of hidden dangers, so that the prevention and control of the epidemic and the resumption of work and production of enterprises to synchronize the advancement of the epidemic. High-risk areas to implement the "internal non-proliferation, external prevention and output, strict control". 4, high-risk areas should also protect the prevention and control of epidemics, the operation of public **** business, the public necessities of life and the normal operation of other enterprises involved in the vitality of national economy and people's livelihood. 5, the patient trajectory query: query process - click on the entry - click on the patient's trajectory - you can query the National Patient trajectory across the country nearly 14 days of data.