Personally, I think it should be the song "Sunset Red" and a collection of songs written by the old singer Mr. Tong Tiexin, with lyrics by Qiao Yu and Zhang Piji. The whole song runs through the sunset like the old days, just like the song:

The most beautiful thing is sunset red, warm and calm,

Sunset is a flower that blooms late, and sunset is an aged wine.

Sunset is late love, sunset is unfinished love,

How much love turns into a touch of sunset red.

The lyrics are easy to understand, but rich in content and beautiful in meaning. Especially suitable for traditional middle-aged and elderly friends to sing in chorus.