A poem describing a song of everlasting regret is a metaphor for writing a long poem. The more, the better.

How much sadness can you have? Like a river flowing eastward.

White hair three thousands of feet, sorrow like a beard.

Lonely boudoir, tender heart full of sorrow.

Through sad dreams, but heartless.

One kind of acacia, two places of leisure. There is no way to eliminate this feeling, only frown, only mind.