1, short poems or poems: Choose some classic ancient poems or modern poems with only a few dozen words, which just meets the limit of 30 words.
2. Refined famous sayings or aphorisms: Choose some concise famous sayings or aphorisms, only a few words or a dozen words, which are suitable for presentation in 30 squares.
3. Feelings or experiences: Have your own feelings or experiences, or you can write them down in 30 words.