The relocation of five rooms is to check whether there are "five rooms" in the production equipment area involving explosive chemicals and class A and B fire hazards, and in the workshops and warehouses with class A and B fire hazards, dust explosion hazards and poisoning hazards. The four zeros are zero for dangerous buildings, zero for problems, zero for letters and visits and zero for poor people. All dangerous houses are removed as the general attack target, and all non-unique houses of farmers are demolished as dangerous houses, or farmers reinforce and repair them themselves. These are of great significance for maintaining social stability and security.