I can't. Units and individual operators engaged in catering and other activities shall build corresponding grease traps and grit chambers in accordance with national technical specifications, apply for drainage permits, and remove them regularly to ensure their normal use. As a restaurant owner, illegal drainage should be prohibited and excessive sewage should not be discharged into the sewage pipeline. Property owners should regularly maintain drainage pipes to ensure smooth drainage. Belonging to illegal drainage, the administrative law enforcement department shall investigate and deal with it according to law.