1. Print words on white paper, which can be favorite aphorisms or love letters to relatives. Knead it into a ball and spread it on the mat.
2. Brew most Nestle coffee, and then apply it to paper with a brush.
3. Sprinkle the remaining coffee powder at will to make it show different color levels.
4. Wait patiently for a few minutes to make the spilled coffee powder color the paper.
5, take a napkin, gently wipe, absorb excess water.
6. Blow dry the paper with a hair dryer, and you will get the old paper as shown below.