What does "things are different" mean?

Things are human beings, things are human beings. Mostly used to express that things have changed, so I miss my old friends very much.

Pronunciation wüshürén füI

Example:

Life is like a feast, and time has passed for a long time.

Reunited in my hometown after a long separation, things are different, so why not do it? People are filled with emotion.

Back to my alma mater, which has been away for 30 years, I can't help thinking a lot.

Things change, things change. There are some things you must forget, and forgetting is the best choice.

Back to my childhood hometown, things have changed and I can't help crying.

Source: Song Liqing according to "Wulingchun" words: "Things are not exhausted, tears flow first."