A member of the Chihu emergency rescue team demonstrates how to do CPR at Nanshexing Primary School in Xinzhen Town of Wen'an County, north China's Hebei Province, June 19, 2018. The Chihu emergency rescue team, a commonweal organization in Wen'an County, promoted to pupils knowledge of disaster prevention and reduction, safety awareness and rescue skills ahead of the summer vacation. (Xinhua/Li Xiaoguo)