What is the theme of Li Shangyin's Untitled Jinse?

1, mourning poem. Written in memory of his dead wife.

2. Poetry. "I wonder why my Jinse has fifty strings" began to lead to what was sung. "Mermaids shed pearl-like tears on the moon-green sea, and blue fields breathe their jade at the sun" is about the beauty of sound, while "a moment that should last forever" is about the feelings expressed by piano sound.

3. Lyrics. Express one's ambition and hard feelings. Li Shangyin was successful as a teenager, but he was rarely reused in the dispute between Niu and Li, so he had to express his anguish through poetry.