Blackboard newspaper, LED screen, publicity display board, etc. Blackboard newspapers that do not belong to the health education publicity column are blackboard newspapers, LED screens and publicity display boards, because health education publicity columns are usually placed in specific places in a fixed form, such as hospitals, schools, communities and other public places, for spreading health knowledge and information. Blackboard newspaper, LED screen and publicity display board are more mobile or electronic means of communication. It can be used to display publicity information for specific events or occasions, but it is not suitable for health education bulletin boards.