Short poems or verses, concise quotes or aphorisms, insights or experiences.
1. Short poems or verses: Choose some classic ancient poems or modern poems. These poems only have a few dozen words, which exactly fit the 30 grid limit.
2. Refined famous quotes or aphorisms: Choose some concise and clear famous quotes or aphorisms. These have only a few words or a dozen words and are suitable for presentation in 30 grids.
3. Insights or experiences: If you have your own insights or experiences, you can also write them down in the 30 boxes.