2. The writing is clear, beautiful, implicit and expressive.
3. The form is short, mostly three or five lines. Syntax and prose are very close. If you don't line up, it looks like a smooth and beautiful essay. These short poems are also natural, without strict meter and rhyme.
Although I gave the answer, it seems too late. My teacher copied it to us. Our monthly exam paper also has this problem, and I hope it will be adopted by ^w^~