Show weakness in the open and fight back in the dark. Eliminating evils for three years means openly showing weakness and secretly fighting back. Sweeping the underworld means eliminating evil forces. As a huge cancer of a harmonious society, the underworld not only does great harm to people's lives and property, but also affects the prosperity and stability of the whole society. People gnash their teeth and hate their guts. Various localities have launched special campaigns to eliminate evils and give peace to society.