"It's actually quite simple. Yu Yao said, but put the top of the jade furnace into the brocade box, "I can't take it and tell you, otherwise you will always want to look at it and affect the safety of driving." ”

"I don't have to look at it, I remember all the details. ”

"Do you remember the details of the orifice of the cow's nostrils on the bottom?"

The bottom surface of the top of the jade furnace should be inlaid on the lid of the copper incense burner, and it can't just be clamped, so it is still easy to fall. Therefore, it is often marked on the bottom surface of the cow's nostrils, fixed with copper wires and other ties, double insurance.

On the bottom surface of the top of this jade furnace, there are two ox nostrils, one with two holes, and a total of four holes.

"What? The nostrils of the cow have not changed much from Song to Ming. It is to first make two larger holes obliquely, and then use a thinner tool to make another hole from a more inclined angle, and finally open the bottom laterally, and then retouch the hole. ”

Yang Rui is also a knowledgeable person, so he will come as soon as he opens his mouth.

"You're right. However, to beat the nostrils of the cow, in addition to using a drill, you must also use jade sand. ”

The drill is a solid drilling tool for making small holes in jade, and there are hollow ones, called tube drills, which are mostly used to make large holes or dig out the chest.

Jie jade sand, also known as milled jade sand, is actually a mineral sand with relatively high hardness, such as garnet ore and corundum ore, which is used with tools for making jade. In ancient times, there were no tools with too high hardness, and there was no electric speed, so it was essential to solve jade sand.

When Yang Rui heard this, his face changed. Although Yu Yao hadn't developed it yet, he didn't expect to know so much about punching tools.

Yu Yao continued, "During the Liaojin period, the jade sand used was Xuanning sand, and the production area was roughly located in the current Liangcheng of Inner Mongolia. Xuanning sand, to put it bluntly, is garnet. The Mohs hardness coefficient of garnet is about 6.5 to 7.5, and the top of this jade furnace is Hetian jade, and the Mohs hardness coefficient of Hetian jade is about 6.0 to 6.5, that is, the hardness of garnet is only slightly higher than that of Hetian jade. ”

Yang Rui immediately responded, "You mean that the perforation on the top of this furnace is not made of garnet to solve jade sand?"

"Yes. The bovine nostrils are easy to observe in part of the orifice. With garnet to solve jade sand, the rotation marks of the pores will not be so fine. This will only be the case if you use harder jade sand and drill faster. For example, corundum, the Mohs hardness is 9, but the jade of the Liaojin period did not use corundum to solve jade sand. ”

A cold sweat broke out on Yang Rui's forehead unconsciously, "The rotation marks of the holes, even if they are different with different hardness of jade sand, are very subtle, and it takes a while to observe such a small hole······ You're not going to bluff me, are you?"

"You can find a magnifying glass to take a closer look at it, and then compare the holes of Liaojin jade. Yu Yao said with a smile, "Other places in the jade can be further polished to eliminate the traces, and the traces will also be diluted because of the slurry, but the swirl marks of the pores will not disappear." ”

Yang Rui took out a hand and touched the lid of the pot, "What you said! That's what I asked! You didn't use a magnifying glass, how could you see it?"

"I'm with eyes you don't believe. Yu Yao pressed the window button and lit a cigarette.

Yang Rui licked his lips, "Give me one too, my cigarette will be finished when you're waiting for you." ”

After taking a few puffs of cigarette, Yang Rui was sullen for a while, and finally spoke, "Okay, I'll convince you!" In fact, Yang Ju can find you, and people like Director He, who are not convinced, say that they are not as good as you, I should have believed it, but I just couldn't convince myself!"

"Brother Yang, I don't care about this, my eyesight is not for convincing. It's just that if you let me see it, I'll see it. ”

"Big brother, say it quickly, suffocate me!"

"Light sensibility. Yu Yao's words were concise and to the point.

Yang Rui was stunned.

After a while, he came back to his senses, "It seems that this is the only way to rely on this······ But how many jade holes do you have to see to have such a discerning eyesight?"

"It's not about the much, it's about the sharpness of the senses. Let me ask you, Brother Yang, why did you know at that time that it was not from the Yuan Dynasty!"

"Didn't I say it?"

"That's right. You have a keen sense of style, the top of the furnace in the Yuan Dynasty, first, there is less antique, and secondly, even if it is antique, because the style is too prominent, you can feel it. ”

Yang Rui was silent again.

After a while, he held back another sentence, "Yang Ju doesn't want to recruit talents, right?"

"He seems to mean that, but I prefer to be an idle crane. ”

"Brother, you really opened my eyes today! Our bureau is a master, if you have such an awesome eye for other things, it is enough to be proud of the others!"

"Now you seem to be truly convinced. ”

"Can I not believe it? bragging in front of you that I missed it, and I was slapped in the face. ”

"I didn't do it, you made it up yourself. ”

"Hahahaha. ”

Naturally, the car will not go to the urban area, but to the Sixth Ring Road. On the side of a large road not far from the Sixth Ring Road, a wide cement road of dozens of meters extends inside, and at the end of the cement road is a yard with an iron gate. The communication room is on the side of the iron door, half outside the door and half inside the door.

On the doorpost on one side, there is a vertical sign with white and black letters: Huaxia 5000 Research Institute.

Yang Rui showed his ID and drove in, Yu Yao asked casually, "You don't have a special cultural relics investigation bureau on your face." ”

"Yes, the sign of the Special Cultural Relics Investigation Bureau is hung in the city, along with the General Administration of Cultural Relics, but there is only one coordination office there. Yang Rui said with a smile, "Many units, where the signs are listed, are not necessarily the real location." ”

Yu Yao nodded, and said in his heart that this 5,000 is estimated to be borrowed from the 5,000-year history of China.

The yard is not large, only an eleven-storey building.

When he got on the elevator, Yu Yao found through the elevator button that there were from B1 to B5, "I'll go, there are five floors underground?"

Yang Rui looked mysterious, "There are still six underground floors, but I haven't been there." ”

Yang Rui swiped the card and pressed the button on the 11th floor.

Out of the elevator, Yang Rui took him to the office with the nameplate of "Executive Deputy Director", knocked on the door and said, "Yang Ju said to see him first." ”

"Please come in!"

They opened the door and entered, and the office was large and simply furnished. Yang Sihai stood up from behind his desk, "It's fast!

"That's a must, anyway, your old man arranged it, and you can ask the traffic police to give me a fine when you go back." ”

"Hurry up, get out!Close the door from the outside!" Yang Sihai scolded with a smile.

Yang Rui walked to Yang Sihai's desk and picked up half a pack of cigarettes wrapped in white skin, without any trademark, and only with a red triangle poke, "Okay, get two good cigarettes and treat them first." ”

After Yang Rui left, Yang Sihai beckoned Yu Yao to sit down on the sofa next to the coffee table, and handed him a bottle of mineral water, "I don't have tea in my office, so let's take a look." ”

"Let's get down to business first!" Yu Yao said, and opened the bag.