Usually, State Grid training does not need to be closed, because it is not a confidential place. If it is closed, it should be affected by the epidemic, eat and live in the company, do not go out, but can contact with the outside world.

Closed management is to take the whole building as the management unit, isolate the building (including the affiliated site) from the outside world with isolators, control and manage the mobile elements such as people and cars entering and leaving the building area within the management scope, and provide meticulous services such as clothing, food, shelter, transportation and use for the owners and users.