Hearing that Liu Lao said that he was going to officially teach the arts, Wu Chen was ecstatic, and he was finally about to embark on the right path!

What he learned before were some basic theories, although it was difficult for Liu Lao to have all kinds of famous books here, which saved him the trouble of studying everywhere. But then again, those basic knowledge, as long as you are interested in this industry, can slowly learn.

And the Ghost Valley Club has been inherited for so many years, and the mysterious organization that has always been the benchmark of the industry will always have some secret techniques of its own, which is the sign of being a successor, and if you don't master these skills, even if you have a name, it is also empty.

If those were all preaching, testing his understanding and patience, now it is officially about to be taught!

There are also reasons why Liu Lao is so solemn, firstly, he is afraid that after Wu Chen has mastered the technique, he will be lured by profit and take the evil path, and secondly, the current situation of the industry is becoming more and more chaotic.

Hundreds of thousands of years before the Republic of China, there were no groups such as "cultural experts" and "treasure experts" who were above the true experts. At that time, the antique shop played by itself, and the real player was the real connoisseur; In the industry, everyone eats with their own eyesight, and the old connoisseur is the master.

In the collection of professional and Taoist lines, its own industry norms and rules, up and down the industry, there is dignity, whether you are a jinshi, champion, senior official or prince, see the old connoisseurs have to call "Brother Dao", "Senior Brother", that is called courteous, respectful, that is really the golden age of antique shops and masters: "We are the corner"!

This is called normality and righteousness. However, with the blessing of the system, since the reform and opening up, many so-called "experts" who are neither collected nor in practice have been drilled out of the country, and some of them are even gangsters and **** teams, using the "qualifications" given by the state or defrauding the country, and playing with peers, many industry experts have been "blinded" for decades, and the knowledge that they have learned with decades of hard work, and the skills and kung fu inherited from their ancestors are all "ignorant".

Every time I talked to Tian Lao and others about this, Mr. Liu couldn't help but sigh, the world is not ancient, and demons are rampant!

Not to mention the "peasant museums" that have appeared one after another in various places, there are all kinds of national tools at every turn, and there are also various television programs, which are rampant under the banner of "appreciation". What's even more outrageous is that on Liulichang Street, some experts can issue an "appraisal certificate" for a few thousand yuan, and many of them are even time-honored brands, which really ruin the face of their ancestors!

In today's national collection, these acts are undoubtedly destroying the foundation of this industry! A few of them are in their eyes and anxious in their hearts, but they are also very helpless, the pronunciation of a few people has long been drowned in the vast sound of national fanaticism, not to mention that most of them are already old, and they are also tossing and turning, and they can only be managed when they meet.

Therefore, for the younger generation such as Wu Chen and Xu Shaodong, they still have a great wish, hoping that they can cleanse the current unhealthy trend to a certain extent, and return a few clear streams to the industry.

Wu Chen's heart was a little heavy when he heard this, he thought he was a lazy person, this kind of thing of fighting against bad people and bad things, it was okay to encounter it, if he had to desperately find fault by himself, he was afraid that he would not be able to do it. Moreover, the so-called "anti-counterfeiting" experts like that square elbow, selective anti-counterfeiting, which implies too much personal utilitarianism, have always been despised by him.

Fortunately, Liu Lao also knew that the current situation could not be reversed by manpower, but only required Wu Chen to stand up straight, and if he encountered a move, it was enough.

Since you have to be nosy, you naturally have to have diamonds.

As an industry secret meeting, Guigu Club really has its own unique means of distinguishing. Liu Lao took it out and flipped it over, and took out a jade pendant from his pocket: "Take a look." ”

Wu Chen saw that this jade pendant was a common monkey offering peach shape, half the size of a palm, and it looked at the pulp tightly and shiny, it seemed to have been coiled for a long time, from the shape to the knife technique, it revealed a Han Jin ancient style, but when he "secretly" peeked at it, he immediately found that this was actually a new product!

"New oil?" Wu Chen saw that Liu Lao was carrying it with him, and it must not be such a simple goods, so he was reluctant to act too eye-catching.

The so-called oil extraction refers to the ancient method of giving jade color. After the ancient jade is put into the soil, it has been eroded for a long time due to environmental relations, resulting in a partial or total change in color, which is called Qin color. The color is one of the criteria for determining the age of jade.

Generally speaking, before the Song Dynasty, it was called old oil, and in the Ming and Qing dynasties, it was called new oil. Wu Chen also learned a lot of terms during this time, and generally knew some general methods for making old ancient jade, as well as conventional identification methods. When he said this, he implicitly showed that this piece of ancient jade was imitated by later generations.

"Dog vinegar!" Liu Lao smiled and shook his head, he was already very satisfied that Wu Chen could see that this was a new product, this was made by himself, and he took it around to play, occasionally testing the old brothers, not to mention ordinary people, even Tian Lao, they would not be able to break it for a while.

The so-called dog vinegar is the raw material used to stain the color in modern times, which is often thick and black dog blood, so it is also called dog vinegar, which is worthless.

Liu Lao didn't expect Wu Chen to be able to judge it so quickly, although it wasn't all right, when he saw the problem, he was very relieved. He originally thought that Wu Chen would have to use some techniques. In addition to the experience of direct seeing, smelling, and touching, there are also some techniques, such as boiling jade to produce ashes.

After the old jade is buried in the soil for a long time, a layer of weathering layer will appear on the surface of the jade, and after it is unearthed, the person who caresses the jade will touch the formed pulp, and this layer of weathering layer will be wrapped in it.

If soaked in warm water, after the pulp is destroyed, the regolith layer will appear a layer of gray matter on the surface of the jade from the inside out, which is called "boiling jade to produce ash".

However, because of this universal characteristic, jade will also deliberately imitate the gray matter layer when it is faked, so whether the ash is produced cannot be used as the only criterion for testing the authenticity of jade.

Now Wu Chen answered quickly, Liu Lao did not hesitate, pointed to a chicken blood line on the jade pendant and said, this is the characteristic of dog vinegar, all jade pieces made by this method must have blood bumps on the Qinbian side, if you look closely at its edge, there will be something like a knot, this is called a red knot, it is still relatively easy to recognize, but ordinary people will ignore it.

Isn't this similar to the halo around the color root in the jade B goods? The habits of physics are always similar, and Wu Chen understood it at one point, so he wrote it down.