I saw a white butterfly flying among the red leaves of bougainvillea in the community a few days ago. It was so beautiful.
The Fei family got a piece of sulfuric acid paper and drew half a butterfly. For symmetry, I drew half a butterfly, you know.
Then fold it in half and trace it with a pencil, and you will have a complete butterfly.
Use double-sided tape to secure the sulfuric acid paper to the rubber brick.