April 26, 2020.
"Social clearing" means that all new confirmed cases we discover later are already among our quarantined close contacts or close contacts of close contacts. There is no longer community-wide epidemic spread in the community. Achieving "social clearing" is to create good conditions for the next step of unblocking our city.
To unblock the city, we must first completely block community transmission. During the corresponding maximum incubation period, no new confirmed cases were found in the community. This is a primary condition for us to gradually unblock. Therefore, we must first achieve "social cleanup" before "unblocking".