Why should Wan Wen walnut be brushed for three points and seven points?

Everyone who plays with walnuts knows that Wan Wen Walnut has a famous saying: Walnuts should be divided into three parts and brushed in seven parts. It is said that walnuts are played or played, but only three points, and brushing walnuts accounts for seven points. It can be seen how important it is to "brush walnuts" in playing walnuts!

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Walnut is a plant seed. In order to protect the walnut kernel from being destroyed, the skin is very thick. The density is very high after drying in the shade. Once the walnut skin is broken, bacteria will enter the walnut and wreak havoc. Therefore, after thousands of years of evolution, the skins of walnuts are all thick wooden skins.

When we play with walnuts, we are communicating with the skins of walnuts. But people's fingers are so thick that they can't play in the concave part of walnut cortex. Over time, thick dust will accumulate here, and when it is mixed with oil, it will become "sludge".

This kind of thing is extremely hard, and it has a great influence on the patina, because the oil in the palm permeates the surface of the walnut. If observed under a microscope, you will find that there are many tissues similar to "pores" in the walnut skin from shallow to deep. Through these tiny holes, the mixture of oil and sweat on your hand can slowly penetrate into the deep layer of walnut, even the inside of walnut, and finally contact with walnut kernel, and finally become a complete whole after several handovers.

/4e4a 20 a 4462309 f 75 c 3 1 fddb 790 E0 cf 3d 6 CAD 699？ X-BCE-process = image/resize, m _ lfit, w _ 450, h _ 600, limit _ 1/quality, q _ 85 The thickness of concave cortex is almost the same as that of convex cortex, but the concave cortex surface is difficult to be touched by palm and finger skin. Therefore, many walnuts are deeply discolored, but the recesses are still shallow white stubble! This process is particularly obvious one month before the new walnut is used, and brushing teeth has become a very important means, because the bristles of the brush are very thin, and it is easy to touch the depressions in the walnut cortex that people can't touch with their palms, even deep. It can replace human hands to finish the work of smearing grease mixture.

This is why new walnuts must be brushed, because it can make the color of walnuts uniform. But the old walnut has too much silt in the depression because of its age. Only by brushing all the year round can it be possible to remove all the sludge here. If you brush it regularly, it will be effective in half a year! Of course, the best effect is to brush the walnuts frequently during serving. As long as you persist, it won't last long, and your Wan Wen walnut will give you the best return!

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