承前启后 literally means 'to inherit what comes before and initiate what follows.' Each character contributes to this layered meaning: 承 (to receive, inherit), 前 (before, past), 启 (to open, initiate), and 后 (after, future). Together, the phrase describes a transitional role or moment that bridges two eras, generations, or phases—honoring tradition while paving the way for innovation or progress. It’s commonly used in formal contexts like education, cultural inheritance, leadership transitions, historical analysis, or artistic development.

The term carries a respectful, constructive connotation—it emphasizes continuity and responsibility, not mere succession. While it can describe people (e.g., a teacher who mentors the next generation), it more often describes actions, events, or works (e.g., a policy, speech, or exhibition) that serve as pivotal links between past and future. It is not used for casual, everyday situations but appears frequently in official speeches, academic writing, and media commentary on social or cultural change.