The whole sentence is: vicissitudes of life have passed, people leave tea and miss home. It is yesterday's past, things are different, only tears are a thousand lines.
It means: times have changed, people have left, and the original human feelings have gradually faded. Looking up at the bright moon and missing my hometown, everything has become a thing of the past. Things remain the same, but people are no longer, only sadness and crying alone.
From the Beijing opera Shajiabang: "When people go to drink tea and feel homesick, yesterday has passed;" Things are different, only a thousand lines of tears. "
Mr. Wang Zengqi, a famous writer, created his own language and wrote lyrics for Aqingsao's singing. What it means now is that the world is cold, and after the person in power leaves his post, he is of no use to others, so people ignore him.
People have cooled their tea: pronunciation
Original meaning: a cup of tea, when people leave, naturally cools down slowly, and cools down.
Moral: When you leave your original place, your relationship in that place will fade away immediately. Metaphor is that the world is cold and human feelings are indifferent.