1. Wet it with less water, stick paper on both sides and put it in a dictionary for a day or two.

2. For white-collar workers who deal with computers and paper in the office every day, open the OFFICE WORD document on the computer, create an empty document, then put the folded paper into the paper slot of the printer, click "Print this document", let the paper enter the printer for a cycle, and then complete its rebirth.

Using the principle that the printer will generate heat when printing, the paper will be as smooth as new, just like being ironed once. Because the printed document is empty, even if you click the "Print" button, there will be no ink left on the paper.