Lost beauty, personal experiences, images and metaphors, etc.
1. Lost beauty: In poetry, the beautiful house disappears because the author wants to express people’s pursuit and desire for beautiful things, but they often cannot keep or possess them permanently.
2. Personal experience: The poem reflects the events or experiences that occurred in the author's personal life.
3. Imagery and metaphor: In some lyric poems, beautiful houses can be used as metaphors, playing a symbolic role in describing inner states, emotional experiences or spiritual realms.