What is the idiom of the Yellow Calendar?

The hero is dying, the color declines, the love is relaxed, and the cold is cold. After many years, times have changed, and the color declines and loves to relax.

The windows were covered with cobwebs, and the beams fell into the mud. The good times don't last long, flowers bloom and fall. Time seems to pass, things change and the grass turns yellow.

Times have changed, people have peach blossoms, moved by the scenery, and the tide has gone. Cold is coming, summer is coming, and things are changing.

With each passing day, the sea has changed, the white clouds are pale, and the color is declining in old age.