You can write on the cloth with a pen dipped in water, and the cloth is displayed in black. After a period of time, it will return to its original color and can be reused. You can practice brushwork calligraphy, and you can also practice pen writing with writing cloth to save the environment.
"Don't look at a small water cloth, but it brings a lot of convenience to people's daily life. In addition to the above-mentioned "hiding shame" without wearing shorts, when taking a bath in Xiaxi River in summer, you should either change a towel or wrap yourself up to change clothes, which probably means "bath cloth". Tarpaulins can also be used as bags. For example, when going out to do business, a few clothes and odds and ends of daily necessities are wrapped in tarpaulins and knotted, and it is very convenient to carry them in your hand or throw them on your shoulders, just like a travel bag. And when people come back from work to buy things, the tarpaulin can replace the basket to wrap things home.