"Three Enters, Three Presentations and Three Understandings" refers to the innovation of ideological and political education for college students in Nanjing Institute of Technology, and it is an important measure for grassroots party building in colleges and universities. The specific meaning is: enter the classroom, enter the dormitory, enter the canteen, mention ideas, mention learning, mention life, know ideas and learn life. The purpose of this initiative is to deeply understand the students' ideological status, study status and living conditions through the cadres of party member entering classrooms, dormitories and canteens, so as to better carry out ideological and political work and guide students to grow up healthily.