How to write fan-shaped calligraphy paper?

Fold the fan-shaped paper like a folding fan, fold it with two fingers, and then write along the crease so that the crease can be covered. When writing in grass, the words on it get bigger and the words on it get smaller. If you don't want creases, go to the mounting shop for an extension after writing, just a few dollars. Just learn, or you can write a poem. Don't write too crowded, Shu Lang!