空城旧梦旧容颜堇色旧城旧人心
[kōng chéng jiù mèng jiù róng yán jĭn sè jiù chéng jiù rén xīn]
Empty City, Old Dreams, Old Faces, Purple-colored Old City, Old Hearts: An evocative and melancholic statement expressing feelings of nostalgia and loss, often set in a desolate urban context.