At the end of the song, people dispersed and looked back at the hometown of Jiangshan. Everything is too vast, and amber in a drunken cup is thin. What do these four poems mean?

After the bullets were finished, people went their separate ways, and they were very sad. Looking back at this mountain and this river is not my hometown. Everything is like a passing cloud, leaving only loneliness and emptiness, temporarily indulging in a few thin bars. (digression: it probably means that times have changed, things have changed, and I feel sad when I think of everything in the past, and then I drown my sorrows in wine. ) I hope I can help you and hope to adopt it.