To distinguish jade is the secret of master play
One day, the ancient jade friend brought a more than 20 cm high jade Guanyin request for identification. Overall, this jade Guanyin is vivid and the patina is acceptable. Initially judged like the old jade works of the Qing Dynasty. However, Mr. Wang, who identified this jade Guanyin, picked up the pencil and slid it across the jade Guanyin. He gently stroked the body along the jade Guanyin body. The pen stroked through the textured place and made a sound, judging from the divergent and light voice. Questions are born. Because the jade of a certain shape will make a crisp, long sound. For example, bracelets, long-shaped jade and combs, jade, thin tires, etc. will make a pleasant sound. Why is the sound that is divergent and fluttering wrong?
Xu Shen's description of Yusheng: "The sound is soothing, and it is far from smelling." That is, knocking on the jade, the sounds that are emitted will gather together and convey a long sense of distance to the distance. Confucius also said: "Qing Yue is long," said the pipe: "clear and clear, pure and not confusing." The core meaning is that the sound of jade is pure and condenses a force, not spread weakly, so it spreads far away. . Therefore, the ancients were very aware of the pronunciation characteristics of this "Yu Zhen Jin Sheng". Even the ancients still have the story of distinguishing jade. For example, in the Jin Dynasty, Wang Jia "to pick up the remains": "Shi Chong Ai 婢 辨 辨 辨 辨 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
As a senior jade expert, and also a senior lecturer in the Jade Academy and Tian Yu appraisal course, Mr. Wang certainly knows the problem of this jade, and suggests that the other party do the detection such as density or refractive index. The next day density test confirms this piece. Jade Guanyin is a glass product.
From the perspective of modern science, Hetian jade has a very dense structure, which provides a basis for the jade to make a crisp and long sound. Modern scientific research also proves that the finer the mineral particles of jade, the higher the hardness of jade, the higher the frequency of sound emitted by jade, the crisper the sound; the lower the impurity content of jade, the simpler the sound of jade, the farther it will spread. Therefore, Hetian jade, known for its exquisiteness, toughness and purity, can be beautifully heard and loved by people. In addition to using Hetian jade to make jade as a special instrument, the ancients also paid attention to the role of jade sound. For example, "Book of Rites": "The gentleman of the ancients will admire the jade, and then enter the sacred, retreat to the yang, and then the jade sings. So the gentleman is in the car, then the sound of sorrow and sorrow." It is conceivable that the ancient gentleman wore the jade. Jewelry, standing like Yushu Linfeng, the line is jade and sound, the money goes forward and backward, the jade jingle, its sound is melodious.
It is also used in the identification and collection of modern jade. If you encounter large pieces of jade, the sound is crisp and jade, which is called steel sheet in the line, and the quality is generally good. "China Hetian Jade": "In 1986, 250 kilograms of Manas big jasper material was obtained. The color is like autumn water. The texture is like ice, and the sound of the bell is a rare treasure." So you can tap Jade judges the type and quality of the original stone through the jade sound. It is also common to see the jade bracelet hanging with a silk thread, and gently tapping with a wooden stick, you can hear the crisp jade sound, if it is not crisp enough, it means that the jade quality is not good, the sound is boring, and there may be cracks. However, it has also been found that some beginners, who know a little about it, use jade to knock the jade to discern the sound. This is not advisable. Because jade is tough, but this hard way is still easy to damage jade.
The masks are lightweight, breathable, and constructed with 3 ply layers just like the larger surgical-style masks. they fit better on very small/child faces. Not for use with children under 2 years of age, will fit kids up to 12 years old. Please see this guidance from the American Academy of Pediatrics for more information on mask usage for children.
The outer blue layer is water-repellent, to keep liquids from soaking through the mask. The inner layer is soft and absorbent of your breath's humidity, so it's comfy and won't get soggy. The middle layer is what does the filtering. There is a wire at the top that you bend over your nose to keep it in place.
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Children'S Disposable Masks,Non-Woven Face Masks,Non-Medical Face Masks,3 Ply Face Mask
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