"Master Liu, the original stones have been unlocked!"

In the distance, the stone dissolving machine had been turned off at this time, and Bu San's shout was heard.

"Let's go. ”

Liu Yiyan took the lead and walked towards the middle of the compound.

Chen Song and Yang Hao hurriedly followed.

In the past two days, the two of them have been looking for less than five cracks in the abandoned rough pile in the morning, but unfortunately there is no progress.

But in two afternoons, the two of them have a preliminary grasp of judging the distance of the crack with the naked eye.

Although it was not 100% accurate, Liu Yiyan surprisingly did not embarrass the two of them after checking their mastery, and let the two continue to practice well.

He was also very curious about why Liu Yiyan drew a line on the cut surface of the rough stone and let the two brothers untie it.

"Well solved!"

Liu Yiyan slightly inspected the rough stone wool that was placed on the ground after unraveling, and found that each piece was cut according to the drawn line, and there was no deviation.

Hearing Liu Yiyan's praise, the two brothers laughed excitedly and a little embarrassed.

It was the first time they had heard someone praise themselves for their good solution, and it was from Xiangyu Master Liu Yiyan.

Usually, when calcing stones, there is only a distinction between qualified and unqualified, and everyone is very busy, who will pay attention to this technical problem.

Liu glanced at the two brothers who were sweating and said with a smile: "You go back to rest first, and come back tomorrow." ”

"Huh?!"

The two brothers couldn't react for a while.

Bu San wiped his sweat and asked, "Master Liu, won't you continue to solve it today?"

Liu Yiyan replied: "Everything that needs to be solved today has been solved, and the others will be solved tomorrow." ”

"Oh, okay, let's go first. ”

Bu San said hello to a few people and left the compound with Bu Si.

This started at noon, and I worked under the scorching sun for more than two hours in a row, and I really felt unbearable.

Usually the calcite is under the greenhouse, although it is also hot, but it is not exposed to the sun, and every time a rough stone is unraveled, it will rest for a few minutes.

In order to have a good impression, the two of them never stopped halfway, and it was inevitable that they would be a little physically and mentally tired when they devoted themselves wholeheartedly, and they also wanted to rest for a while, but they didn't expect Liu Yiyan to directly let the two go back to rest.

"Master, why don't you draw this tangent on the crack?"

Yang Hao looked at the piles of rough stones on the ground that had been completely unraveled, and reassembled the unraveled pieces according to their original positions, and couldn't help but ask the questions in his heart.

Liu Yiyan bent down on the ground and picked up two pieces of material at random, handed them to Yang Hao and Chen Song respectively, and said, "You two see what my intentions are." ”

Chen Song and Yang Hao hurriedly took it and looked at it.

The pieces on both of their hands are about the same, with a width of about five centimeters, a large crack in the middle, no kind of water color to speak of, and the texture is also very rough, and the graininess can be clearly seen.

Liu Yiyan asked the two, "Did you guess?"

Chen Song and Yang Hao shook their heads with a wry smile at the same time.

This material is similar to waste rock, the crack is also obvious, there is no color, and everything that can be seen has been seen, and Liu Yiyan's intention is not seen at all.

Wait a minute!

Chen Song and Yang Hao glanced at each other with some surprise at the same time.

The two put the piece in their hands into the bucket next to them and wet it, and after picking it up again, they clearly saw that there were small locks on both sides of the piece due to large cracks, and they couldn't help but smile at each other.

Yang Hao said happily: "Master, have you started to teach us how to see the depth of the rift?"

"Yes! Generally, the rough stone that goes out of the mine, as long as it performs well, will be divided into two, and you can directly see the facet, so first teach you the commonly used identification method, which is also to judge the cracks of semi-clear materials. ”

Liu glanced at the piece of material in the hands of the two and said: "By unraveling the rough stone next to the crack, you can clearly see the depth of the original crack and the specific direction of the crack." ”

Chen Song said excitedly: "Master Liu, how can you tell the difference?"

"Without him, only familiar eyes!"

Liu Yiyan said: "First of all, we must observe the size of the surface crack, and calculate the depth of the crack and whether it will produce a lock according to the length and width of the crack and the texture change of the rough itself. ”

Chen Song and Yang Hao suddenly understood.

The crack is caused by the influence of external forces and the difference in the density of its own material.

The density of the rough itself is different, and the resulting cracks are naturally different.

First look at the size of the crack, combined with the texture of the rough stone to calculate the trend and size of the crack, and then further calculate whether the crack will be divided again, how much the lock will be, and what is the size.

Yang Hao asked with a little headache: "Master, the crack can be judged on the surface, but this lock is in the dark, how to accurately judge?"

Liu Yan said angrily: "Didn't I just say? Combined with the texture change of the original stone itself, it can be calculated!"

Seeing that the two still didn't quite understand, Liu Yiyan explained: "The crack of the jadeite rough is closely related to its own material and density, that is, its texture, or species, and the crack is basically fixed, and it can be distinguished at a glance, and we can analyze the lock according to the trend of the crack, because most of the locks extend from the crack, do you understand?"

Chen Song and Yang Hao nodded as if they didn't understand.

Liu glanced at the two who were still a little confused, and couldn't help but have a headache.

Is this because of their poor expression skills, and they can't understand it?

Or is it okay to say it yourself, but there is a problem with their ability to understand?

Why is this so difficult to teach!

How do you teach them to understand it thoroughly?

After pondering for a long time, he reached out and took the piece from Yang Hao's hand, pointed to the big crack on it and asked, "This is a big crack, right?"

Seeing the two nodding, he turned to the side again, pointed to the locks and asked, "These are the locks, right?"

Chen Song and Yang Hao nodded without hesitation.

"If you look closely at the texture of this piece, are these locations less dense than the others?"

Liu Yiyan clicked a few times on the side of the film, saw the two nodding, and continued: "Are these places with a relatively low density the location where the strands are generated?"

"Really!"

Chen Song and Yang Hao took a closer look and found that the locks were generated from these relatively low-density locations and extended in all directions.

Liu glanced back at the cracked side on the surface and said, "These places with relatively low density, are the cracks on them wider than those in other locations?"

Chen Song and Yang Hao suddenly opened their huts.

The better the texture of the same crack, the smaller the width of the crack, and the larger the width of the crack.

Liu glanced back to the side, pointed to a place with low density, and asked, "Do you see that there are more strands in this place than in other locations?"

Yang Hao nodded understandingly: "Master, do you first identify the density of each specific part of the rough stone, and then look at the crack according to the density, and finally deduce the locks inside?"

"Yes, the better the density of the position, the locks can't be extended, you see above, this strand from the crack, to this position will be interrupted, because the density of this position has become larger, it can't extend in, we call this situation the old crack does not enter, meaning the better the texture, the more difficult the crack to produce. ”

Liu Yan secretly breathed a sigh of relief, starting from the crack position, and said while pulling down.

Chen Song and Yang Hao completely understood now.

Liu Yiyan suddenly saw a lock on the film, slightly surprised, stretched out his hand and pointed: "You should pay attention to this kind of lock!"

Chen Song and Yang Hao hurriedly put their heads together.

It was indeed a little strange to see the lock that Liu was pointing to at a glance.

"It's misplaced. ”

Liu Yiyan crossed the lock with his finger and said, "It means that after the lock is formed, due to the action of two opposite directional forces, the same lock is misaligned." ”

Yang Hao frowned and asked, "Master, isn't it difficult to judge this misplaced lock?"

Since the misalignment is formed by the action of two forces, it means that it may be hidden somewhere in the rough stone.

Liu Yan said: "It's not too difficult, it's still easy to distinguish if you are careful." ”

Yang Hao asked, "Master, how can you tell the difference between this dislocation lock?"

Liu Yiyan smiled and said, "Don't worry, I'll teach you when you all find less than five cracked rough stones!"

Yang Hao was speechless.

Chen Song opened his mouth, but finally closed it helplessly.

Rough stones with less than five cracks are too hard to find!

The two of them had almost emptied the first rough stone in the past two days, and they didn't even touch the rough stone with fewer cracks.

Liu Yiyan smiled: "In the future, you will distinguish the density of the flakes and the relationship between cracks and locks in the afternoon, some pieces will be thicker, if the cracks inside are not very clear, you will play a strong light to see, to put it bluntly, the cracks are related to the difference in the texture of the original stone, if the texture is diversified, the more uneven the density, the more cracks, so only by looking more, you can have a specific impression." ”

Chen Song and Yang Hao hurriedly nodded in understanding.

The same rough stone, unless the water is very good, otherwise there will be a big difference in the texture of the top, the most intuitive manifestation of this difference is in the crack, the more uneven the texture, the greater the change, the more cracks.

Once the texture is uniform, even if the planting water is very poor, there will not be too many cracks on it, and if the texture is consistent, then there will be no cracks directly.

Yang Hao asked, "Master, does the rough stone with a complete weathered shell also look like this?"

Liu glanced at Yang Hao with squinted eyes and said, "You haven't even learned this simplest material, so don't think about that yet!"

"You have to accurately judge the size of the rift as soon as possible, otherwise you won't be able to move on to the next step!"

Liu glanced up and saw the pile of rough stones in the distance that had been emptied by Chen Song and Yang Hao, and said with a smile: "When you all find less than five cracked rough stones, I will teach you how to see cracks according to the weathered shell!"

Hearing Liu Yiyan's words, the two of them suddenly became excited.

"Practice well, and pay more attention to the relationship between cracks and texture when you look at them. ”

After Liu finished speaking, he turned his head to Hong Ying, who had been watching from the side and was silent, and asked, "Captain Hong, do you want to go to my place for tea?"

"Good!"

Hong Ying was a little flattered and said, "Then disturb Master Liu!"

You must know that Chu Wushuang and Mr. Ge have never seen Liu Yiyi's invitation, and even offered to drink tea, but they were refused.

After Liu Yiyan and Hong Ying left, the courtyard suddenly quieted down, leaving only Chen Song and Yang Hao, silently studying the cracks on the jade rough under the scorching sun.