We met. We understand. What is the relationship between acquaintances? What do you mean by seeing that Jun Qing has become a stranger?

Strangers meet because of fate, but they are strangers when they meet again after a farewell.

The poem "We Meet". We understand. What is the relationship between acquaintances? "From Bai Juyi's Pipa Trip:" That night, I was seeing off guests on the Xunyang River, and maple leaves and rushes rustled in autumn. I, the host, have dismounted, my guest has boarded his boat, and we raise our cups, hoping to drink-but, alas, there is no music. We were all unhappy until the end of the day, when we met. We understand. What is the relationship between acquaintances? It means that accidental meeting is a kind of fate, and you don't have to care whether you know it before.

"Look at that stranger again" means that when we meet again, we have become strangers to each other, as if walking on different roads. This sentence depicts the ruthlessness of time and the changes of life. Even people you already know may be alienated and even become strangers for various reasons. People lament the impermanence and change of life and the sense of alienation between people.