In the construction of the first-class course "Outline of Modern Chinese History" in Liaoning Province, an immersive teaching mode that transforms the textbook system into a teaching system was explored. Immersive teaching emphasizes involvement and sense of experience, allowing students to immerse themselves mentally and physically, breaking through the dilemma of achieving the expected teaching effect of ideological and political courses. Four aspects are used to build immersive teaching: bringing the red genes of school history into the classroom to evoke empathy of values; reconstructing teaching sequences with problem chains to stimulate speculative resonance; naming teaching topics with Mao Zedong's poetry to ignite artistic empathy and producing historical drama scenes to facilitate practical sharing.