Choose according to the following methods

One, six nothing: no defect, no depression, no focus, shameless bone skin, no gum, no empty tail.

No defect:

Every side of walnut can't be damaged or damaged. Especially the tips and ribs, should be intact and have no protrusions.

No depression:

Walnut has a depression in the morning due to lack of water and nutrition during its growth and maturity, which belongs to insufficient growth. This defect is irreparable, it loses its ornamental value and is not convenient to rub.

Non-focal plane:

The so-called burnt noodles, that is, one side of walnuts is darker than other places and looks like burnt color, so it is called burnt noodles.

The burnt surface is the pigment precipitation caused by long-term direct sunlight during the growth of walnut. The longer the rubbing time, the greater the color contrast.

No vulvar skin:

Yin skin is a spot or lump formed by soaking soft walnut skin in water for too long.

No gum:

Gum (walnut gum) is a walnut disease caused by soil, moisture and climate in the producing area. Gums usually stick to wrinkles or sharp edges. White after cleaning, black after rubbing for a long time, unclean and indelible. In severe cases, it will affect the hardness of walnut shell, and digging with sharp tools will damage the shell.

No empty tail:

The empty tail is caused by the lack of nutrition and water after walnut ripening.

Empty tail is a taboo for playing and watching walnuts, and it is known as "no top, no short life".

Two, seven-character formula: shape, color, grain, tip, tail (navel), quantity and quality.

Shape: shape is the first factor in choosing walnuts, and good shape is an important condition for hand-made walnuts. Most people like round or oval walnuts, which are easy to knead, press freely and rotate smoothly. In the selection, we should pay attention to straight but not stiff, large but not sharp protrusions, and wide ribs without bending.

Color: The distribution of walnuts is different, the soil quality is different, and the varieties are different, so the color is also very different. Because of the different colors, the effect of kneading dough is very different. According to the traditional aesthetic concept, people prefer brown and yellow. Long-term kneading will form brownish red or dark brown.

Grain: the grain is the wrinkle of walnut skin. It not only plays the role of friction stimulation in hand therapy, but also determines the ornamental value of a pair of walnuts.

Tip: The tip of a walnut, like a human head, determines the value of a pair of walnuts. It is required that the top of walnut is sharp and unfavorable, blunt and tangible, without distortion, opening, white top and black top, and its shape is in harmony with the ribs and consistent with the surrounding areas.

Tail: Tail plays an important role in kneading and appreciating walnuts. There is a saying among people who play walnuts: the tip should be blunt, the navel should be important, and you can sit firmly in your palm. The choice is to see if the tail is flat first. If it is blocked strictly, it will not be empty.

Quantity: quantity, that is, weight. Hand-processed walnuts need to be held in your hand or in your pocket for a long time, so the weight naturally becomes a problem that cannot be ignored. If it is too heavy, it will be inconvenient to carry, if it is too light. If there is nothing in your hand, the squeezed meat will float lightly and the pressure will be weak, which will affect the effect of hand handling. In the choice, it is best to be a little heavier, because there is a certain inertia, and it is best to rotate.

Quality: Quality refers to the texture structure of walnut skin. The color, brightness and feel of a pair of walnuts are all determined by the texture of walnut skin. The denser the structure, the faster the coloring, the faster the sizing and magnetic hanging, and vice versa. The way to measure the texture of walnuts is to listen to the copper sound. It is best to put a pair of walnuts in your ears and gently collide to make the same sound as copper and iron, indicating that the texture and structure are good.