Interpretation: I sincerely advise my friends to have another glass of wine. It's hard to meet old relatives when you go west from Yangguan.
Parting, I have a lot to say, but I don't know where to start at the moment. On this occasion, there is often silence. "Advise you to drink more wine" is a way to unconsciously break this silence and express the rich and complicated feelings at the moment. What the poet has not said is much richer than what he has said.
This poem describes the most common parting. It has no special background, but it has its own deep feelings of farewell, which is suitable for most people to sing outside the banquet. Later, it was incorporated into Yuefu and became the most widely circulated and longest-lasting song.