A person holds two walnuts and turns them around in his hand. It is said that this activity has been going on since ancient times, saying: Plate the walnuts! Emperor Qianlong once wrote a poem: "The sun and moon are spinning in the palm of my hand, and time is about to flow back. Qi and blood are surging all over my body, no matter how old I am." He is talking about Panwalnut. Placing walnuts is a leisurely and elegant pastime. It is a simple and convenient fitness exercise. While cultivating your sentiments, it can also exercise finger flexibility, relax your muscles and activate blood circulation, prevent colds, cultivate your body and mind, and develop cerebellar wisdom. There are many things to pay attention to when plating walnuts, which are mainly divided into "Wenpan" and "Wupan": "Wenpan" means that when plating walnuts, two walnuts do not collide. This is a technique used by many masters. Its advantage is that the texture of the walnuts is well preserved. And shape, no noise, no scratches or other damage to the walnuts. "Wupan" is when two walnuts are plated, two walnuts touch each other. This is mostly a novice technique. The advantage is that after getting started, the gestures can be made quickly, but there are many disadvantages, such as making noise and easily damaging the walnuts. After being played with for a long time and in contact with hand sweat and air, walnuts will change from a light brown color at the beginning to a dark brown color over time, and then become shiny, red, and purple.