Fu is a type of poetry that was created a long, long time ago in China. It's kind of like a really fancy story that rhymes and has a specific pattern to it. The people who wrote fu poems wanted to make them sound really nice, so they used lots of big, fancy words and wrote about important things like nature, history, and feelings.
Imagine you want to tell a story about a beautiful flower. Instead of just saying "I saw a pretty flower," you might say something like "The majestic petals of a flower bloomed in a marvelous display of color, radiating a sense of peacefulness and harmony." That's kind of what fu poetry is like - using special words and descriptions to create a really vivid picture in the reader's mind.
Fu poetry also has a special structure, with specific rules about which words should rhyme and where they should go in the poem. Think of it like building a really cool Lego castle - you have instructions to follow, but you can still be creative within those instructions to make something unique.
Overall, fu poetry is a fancy and artistic way to tell stories, express emotions, and honor important things in the world.