1. "Dreamland" refers to the state of being asleep. This shows that "night" has arrived.
2. This describes the "big river" being calm, without waves, and reflecting the stars in the sky, so it is said that "the big river has ten thousand stars."
3． This is a description of the green grass on a waterlogged field under the moonlight. Because there is water on the grass, it reflects the moonlight, so the "green grass" "shines with silver light."
4. Focusing on describing the tranquility and beauty of the night, it reflects the poet's love for nature and his comfortable and peaceful state of mind.
5. Township, noise, shouting.