The soldier explains the work plan to the special group that arrived in the contaminated area. Members of the special group collect insects that carry infection from the contaminated field. The activities of a special group in one of the settlements: disinfect premises. Vice-President of the Government of Northeast China Lin Fong talks with a group of people, goes to the special. protective suit into the infected area. Lin Fong at a pond infested with insects. Arrival of a group of orderlies to the area of bacteriological contamination; processing of contaminated areas. Insect research in one of the laboratories.