Why is the epidemic in Chengdu still going on?

There are two main reasons for the persistence of the epidemic in Chengdu: 1. In August, due to the high temperature in Chengdu, the city was cut off from power, with intensive personnel contact and many viruses. 2. When the whole city of Chengdu is under silent control, the community control is lax and there is cross-infection in the community. The above two reasons led to the persistence of the epidemic in Chengdu.