1.Playing with peach stone strings:The stage of brightening the peach stone strings. When you start playing, you will enter the brightening stage. At this stage you will have the feeling of walnuts biting your hand, which is the hardest stage for all nuclear friends. You will feel that your hands become rough and unfulfilled because there is nothing in the walnut skin at this stage. It will absorb the sweat and oil from your hands. The only thing we have to do at this stage is to rub the sweat and oil on our hands into the walnut skin, penetrate through the skin into the inner skin of the walnut, so that repeated absorption and penetration to achieve the degree of rubbing bright. Stage bright how long? It depends on the time you play every day, rubbing the strength, the amount of sweat and oil secretion on the hands, walnut varieties, climate, etc. 2, peach stone strings play: peach stone strings become red stage. After a long time playing and rubbing, the walnut itself will change the texture, the water will evaporate, the volume will be reduced, the weight will be slightly lighter, the wood will gradually harden. The baby's appearance in your hand is quietly changing, gradually turning red, which is the beginning of the sizing performance. How long does it take to rub the red stage from sizing to wrapping? In my own case, it takes about three to six months to reach the level of just started sizing. 3, peach stone string playing: kneading peach stone string slippery stage: this stage is the continuation of the rubbing red stage, but also the sublimation process of walnut pulp parcel. Because we play for a long time, walnut pulp will become thicker and thicker, walnut skin and body fluids give full play to chemical reactions, the wood will become harder, the color will become heavier and heavier, as follows: red → crimson → purple (black).