How to completely remove the yellow marks on the sheets?

To remove the yellow stains on the sheets, you need to prepare chopsticks, birdbath, clean water, toilet water, baking soda, salt and small bowls.

1. First, take out the salt and baking soda and pour a proper amount of baking soda into a small bowl.

2. Take out the salt and pour it in.

3. Open the toilet water again and pour in the toilet water.

4. Pour in water and stir.

5. Pour the liquid in the small bowl into the basin where the sheets are soaked.

6. Just wash off the yellow stains on the sheets.

7. Finally, you can see that the yellow stains on the sheets have been washed away.