It means electronic news package. Publicity materials mainly include posters, micro-stations, small programs and so on. Generally, it is promoted for social training conferences and industry seminars, and the courses are sold. However, there is no need to announce the internal training meeting of industrial enterprises, live medical treatment and college-style training meeting. Only such a training course carrier is needed, which can clearly introduce the course classification and facilitate the students to enter the live broadcast at the beginning of training.