Literature Reference: 静习狂心尽，幽居道气添。—— 《开元观闲居酬吴士矩侍御三十韵》 Calming the restless heart, the hermit's dwelling enhances the Taoist spirit. Source from 'Kaiyuan Guan Xian Ju Chou Wu Shiju Shi Yu'.
幽: Serene and concealed, it embodies elegance and composure.
忧: Anxiety; apprehension.
Meaning: A serene and profound sorrow, expressing deep and introspective emotions.