浅忘空城守旧人浅忘旧人守空城
[qiăn wàng kōng chéng shŏu jiù rén qiăn wàng jiù rén shŏu kōng chéng]
A phrase rich in metaphor,'lightly forgetting an empty city guarding the old man and lightly forgetting the old man guarding an empty city' suggests themes of solitude, reminiscence, cyclical loneliness, or perhaps futility and the passing of time.