면벽구년in English:a year of facing a wall (a period of intense meditation or self-reflection)

Examples
with 면벽구년.

• 그는 면벽구년 동안 깊은 명상을 했다.geuneun myeonbyeokgunyeon dongan gipeun myeongsangeul haetta.He meditated deeply for a year of facing a wall.