Although walnut is a kind of food, it is also a small collection variety in the antique trade, which is called wenwan walnut by insiders. Generally speaking, the requirement for wenwan walnuts is deep and clear texture, and each pair of wenwan walnuts should have similar texture, the same size and the same weight. Therefore, it takes a lot of effort to make a pair, and it will be even more precious if it is carefully carved by skilled craftsmen and the old red color formed after years of playing.

Generally speaking, choosing walnuts mainly depends on "appearance, size and hand".

First of all, Tibetan friends should know that wenwan walnut is a wild variety, and its value lies in the word "wild". No one cultivates it and takes good care of it. It depends entirely on nature, and its appearance and texture are also wonderful. As we all know, scarcity is the most valuable thing, so pure wild walnuts are the first choice from the collection point of view. Choose the shape of walnut to see what kind it is and whether it bumps. Secondly, the width, height and belly size of a pair of walnuts were measured with calipers according to the variety requirements. Then there is the feeling of comfort and hand-holding, which is very particular. Take a pair of lion heads as an example, they are in good shape, with a head width of over 45 mm and a height of about 45 mm, and they are very light in hand. Needless to say, they must be artificially improved varieties, and their shells are not dense enough, lacking a sense of heaviness. The sound of the collision between the two cores lacks the charm of stone, accompanied by sand noise, so that a pair of walnuts will not become fine products no matter how well maintained. Therefore, it is more expensive to choose pure natural pecans when choosing. In recent years, a large number of grafted walnuts have appeared in the market, with flat navel and loose pedicle, which is nothing to say as fitness, but the collection value is far less than that of wild walnuts.

When you get a pair of walnuts, you should first get rid of the impurities on the surface, even the tiny green peel remnants. This is a preparation for the walnut to change color evenly after you get started in the future. Because of the deep texture of walnuts, some remnants are not clear. Here's a tip. Walnuts like hardwoods like oil. You can brush walnuts with oil for a long time, and then dispose of them with a steel needle and toothbrush after those dried remnants absorb oil and become soft. What needs to be paid attention to here is the problem of oiling. Don't oil too much, which will make the walnut skin or dull in color in the future.

Walnuts can be used after they are cleaned up, and there is also stress on kneading walnuts. There is a saying called "Wen Pan". It is to avoid the collision of two walnuts as much as possible in the process of kneading walnuts, so as to ensure the integrity of the natural texture of walnuts. Theoretically, it is called "slow polishing", and it is also a hidden rule of players not to rattle. There is also a saying called "martial arts paper plate". "martial arts" is not a hard grinding, but a natural light touch of walnuts in the hands at the beginning of the hand, which makes the sharp edges and corners of new walnuts smooth, thus eliminating the feeling of hand injury, which will also reduce the situation that two walnuts collide and get stuck in their hands and fall to the ground.