用蒸馏水把纸略微打湿。 像三明治一样把纸夹在吸水性材料之间。 每天检查，直到纸变干。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
When paper is crumpled, its fibers become damaged and torn. Water can soften these fibers so they lay flat again, reducing the visibility of wrinkles and crease lines. Only use distilled water, as ordinary tap water contains minerals that can make the paper feel crusty or hard. Spray it lightly from at least one foot (0.3 meters) with a spray bottle, or dab gently with a slightly damp towel.  Warning: Water can ruin watercolor, chalk, pastels, and water-soluble inks. If your paper contains these