How to write an ancient poem on fan-shaped steel 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 a few dollars after writing. Don't write too many poems, Shu Lang!