1. Brushing: The walnuts should be rubbed six times, brushed three times, and the remaining one point is given to them to settle down. Whether you use rubbing or kneading, you can only rub the surface of the walnuts. The depressions of walnuts cannot be rubbed. When kneading new walnuts, it is best to prepare 3 brushes, one for wiping, two for scrubbing, and three for dusting.

2. Rubbing: Play with and clean at the same time. In the early years, you should pay attention to the fact that walnuts should not be allowed to be used by others within 3 years. Different hands have different chemical compositions, which means different "popularity" as the old saying goes, and different effects on walnuts. It will directly affect the coloring of walnuts. The lines of walnuts can be very dirty, harboring dirt and evil.

3. Cleaning: During playing, walnuts need to be cleaned frequently, otherwise the color of the walnuts will be affected. After the walnuts have been kneaded for a period of time, there will be a certain amount of mud hiding in the gullies and gaps of the walnut skin. Cleaning is very necessary, otherwise you will be dealing with two sources of pollution - two mud balls all day long, which will affect your health.