Danzhuan literally means "written by cinnabar", which often refers to Taoist books. The mountain pavilion should be a place for monasticism. Boxwood grows slowly. In Taoist culture, boxwood is considered to be helpful to magical powers, similar to "Bodhi" representing Buddhism, in which boxwood represents Taoism.
Due to the need of language confrontation, the biography of Dan makes books and knowledge similar and concrete to boxwood.
Entrusted by Bao, Zhao carved the residual word "Yi He Ming" into couplets. Although the words have no deep meaning, the calligraphy is beautiful.