‘闭关’ literally means ‘to close the pass’—originally referring to sealing mountain passes for defense or spiritual seclusion. Over time, it evolved into a metaphor for withdrawing from daily life to focus intensely on self-cultivation, scholarly study, or meditation, especially in Daoist and Buddhist traditions. The character 闭 (bì) means ‘to shut’ or ‘to close’, while 关 (guān) means ‘pass’, ‘barrier’, or ‘checkpoint’. Together, they evoke the image of shutting oneself off from external distractions.

Today, ‘闭关’ is used both traditionally—such as a monk entering solitary retreat—and figuratively, like a writer ‘closing themselves off’ to finish a book. It carries connotations of discipline, dedication, and temporary withdrawal, not isolation due to illness or social avoidance. While rooted in religious practice, modern usage often appears in academic, artistic, or wellness contexts, always implying purposeful, time-bound seclusion for growth or deep work.