1. Soak the clothes first, and add detergent to the dirty places, as shown in the following figure:
2. Pour in salt and starch, as shown in the figure below:
3, rub a few times, as shown in the figure below:
4. Let it stand for ten minutes, as shown in the following figure:
5. After ten minutes, the dirty place will be washed away, as shown in the following figure: