According to Netease's inquiry, the "three advances" work is an important task of ideological and political education in colleges and universities. The three advances are "into the teaching material", "into the classroom" and "into the mind", which are relatively independent and inseparable. The most basic connotation requirements of "Three Enters" are that "teaching materials" should be systematic, "classroom" should be vivid and "brain" should be solid. At the same time, the three are complementary, that is, "entering the textbook" is the premise, "entering the classroom" is the premise, and "entering the mind" is the teaching goal.