This is a metrical poem. Why is it metrical poetry? Analyze its rhyming, antithesis and plainness (including whether it is difficult to survive).

-Rules-

⊙ Flat, flat (rhyme).

⊙ Flat, flat (rhyme).

⊙ Flat, flat (rhyme).

⊙ Flat, flat (rhyme).

Breeze grass

Riding alone at night: especially the eleventh rhyme.

The endless plains are dotted with drooping stars.

The moon runs up the river: eleven rhymes.

I hope my art can bring me fame.

Free my sick old age from the office! Hugh: Eleven rhymes especially.

What do I look like, drifting so freely?

But sandpipers in the vast world! Gull: Eleven rhymes.

Eight sentences, each with five words, conform to the meter (for metrical poems, there are four kinds of meters, which is one of them), that is, the five-character metrical poem is flat, the first word can't be flat, and the other first words can be flat, the meter of the whole poem is correct, and the couplet is neat.