This Mr. Wan pretended to say casually: "What is the name of this little brother, you see that we are all patronizing and talking, Xiaocheng, you are too, why don't you greet the guests to sit down." Why don't you come to my office and drink tea, and let's talk while drinking. ”

As he spoke, he was going to invite Li Shan to his office. During this period, Li Shan's eyes were staring at the two of them, for fear that they would drop their things.

"Hello Mr. Wan, just call me Xiao Li, that, do you want me to take it?" Li Shan pointed to the jade in Mr. Wan's hand.

"Haha, you see I'm all confused, I have to talk, you take this first. Mr. Wan laughed and handed the jade back to Li Shan.

"Drink tea, don't be in a hurry for this first, Mr. Wan, you see that we should get down to business first, I want to test whether this piece of jade has radiation." Li Shan looked at Mr. Wan and said with a smile.

"Yes, yes, Xiao Cheng, you arrange it first, take Xiao Li to the back to test it, and come to my house after it's over. When Mr. Wan heard this, he hurriedly ordered.

So Xiao Cheng led Li Shan to the second floor.

"Our store is very famous in Chang'an City, so there are many new and old customers, and now people are more health-conscious, and some of them will have doubts about these original jade, so we purchased a radiation detector in our store, in order to reassure customers, please here. Xiao Cheng introduced while leading the way.

Then they entered a room on the second floor with the words "testing room" on the door, Li Shan saw that there was a lot of equipment in the room, and only one person who looked like a staff member was looking down at his mobile phone, and when he saw them coming in, he hurriedly got up to greet them.

"Xiao Wang, test the radiation for this guest, Xiao Li, it's a device used to detect metal composition, if your girlfriend wants to test her gold necklace, you can come here. Xiao Cheng saw Li Shan staring at one of the devices, so he spoke.

Li Shan nodded, and handed the piece of jade in his hand to the little king in front of him.

Watching Xiao Wang's operation, Li Shan turned around and said to Xiao Cheng: "How do you calculate the cost of this test?"

"You're welcome, our testing here is free. Xiao Cheng said with a smile.

"Now that people have a good life, they like to buy jade or something, which is the so-called prosperous antique troubled gold, but they are worried that there is radiation in it. In nature, the earth itself has radionuclides that are present in the earth's crust, called primary radionuclides. Primary radionuclides can be divided into two categories, one is the nuclides with decay series, mainly some nuclides of the uranium and thorium series, and the other is the radionuclides of the non-decay series, such as 40K, 87Rb, etc. Primary radionuclides are widely found in the earth's rocks, soils, rivers, lakes and seas. The activity concentration and distribution of these nuclides vary with the type of rock formation. Generally, granite has the highest activity concentration, and the highest activity concentration of uranium, thorium, radium, potassium and other elements contained in soil and rock is 40K.

Our equipment adopts the most advanced nanotechnology in the world today, is an environmental grade Хγ radiation dosimetrymeter is a new type of intelligent environmental grade radiation dosimeter, it adopts a special design of environmental grade or high pollution environment device, with high sensitivity, easy operation, automatic display, data storage high threshold historical values and other characteristics, can give real-time and fast measurement results. With nothing to do, Xiao Cheng talked about the knowledge endlessly.

"How is this possible?" Just as Xiao Cheng was able to speak energetically, he was suddenly interrupted by Xiao Wang's astonishment.

"What's wrong, what's wrong?" Xiao Cheng and Li Shan shouted almost at the same time.

Li Shan was worried that he wouldn't damage the jade.

"I tested it just now, our instrument is very sensitive, the general stone has more or less a little radiation, but this stone can't detect any radiation, you look at this display, the number on it is zero, this is impossible. Xiao Wang said in disbelief.

"Is the machine broken?" Xiao Cheng didn't dare to decide.

"No, I just checked it with a sample, and there is no problem with the machine. Xiao Wang replied.

"Is there also this possibility, that is, this jade does not have radiation. Li Shan interjected.

Xiao Wang hesitated, but nodded and said, "You can say that, but ........" But he didn't say why.

"Thank you then. It seemed that the situation was like this, so Li Shan and the others thanked the little queen and went down to the first floor.

They came to Mr. Wan's office, and Mr. Wan had been waiting for them, and when he saw them come in, he asked, "How are the test results?"

"Not a little bit of radiation was detected. Xiao Cheng reported to Mr. Wan.

"Oh, there's such a thing. Mr. Wan obviously knew something, but he didn't show too much surprise.

"Little brother, your piece of jade belongs to Lantian jade, which is a low-grade jade in jade, and our store does not sell this kind of goods at all........"

Seeing that Mr. Wan opened his mouth to say something, Li Shan immediately cut off Mr. Wan's words and said, "Since your store doesn't deal in this kind of jade, then I'll take it back first." ”

Although this Mr. Wan was very calm, from the way he clutched it in his hand and the small movements with Xiao Cheng, his inner thoughts had been exposed, proving that this piece of jade was extraordinary.

Now Li Shan has regretted coming to this trip, he thought that the coal was very rare, and now he found that the value of this jade should not be under it, and it is not in vain to know the value of this jade.

He also knew that when Mr. Wan wanted to say something, he immediately interrupted him. All of a sudden, the "but" that Mr. Wan still wanted to say was forcibly held back.

At this time, Li Shan got up and was about to say goodbye, this Mr. Wan was a little stunned for a while, his face was blue and white, but there was no better way, so he had to order Xiao Cheng to send off the guest.

At the moment when Li Shan walked out of the door, he inadvertently glanced back at Mr. Wan, and saw a trace of greed burst out of his eyes unabashedly.

After Xiao Cheng sent Li Shan away, he returned to Mr. Wan's office, and at this time, Mr. Wan was holding an antique book and seemed to be studying something.

"Is it all arranged?" Mr. Wan asked without raising his head, his eyes were sharp and a little scary, and his voice was a little cold.

"It's all arranged, he can't escape from our palms, this person shouldn't have any background, you can rest assured. Xiao Cheng replied cautiously.

Li Shan had already walked out of the door of this store at this time, and glanced back at the vermilion door, but a shadow was shrouded in his heart.

He is hiding a treasure now, and it is inevitable that it will not arouse the concern of others, especially the look in Mr. Wan that he saw when he went out, which made him have doubts all the time.

The greed of the human heart is sometimes unimaginable, and sometimes driven by interests, it is inevitable to make some crazy moves, which cannot but be guarded against.

Ever since I walked out of the door of that shop, I felt like I was always having a pair of eyes on me.

But when I looked back, I didn't find anything, maybe it was a psychological reaction, but this didn't make Li Shan settle down.

Suddenly, seeing a public toilet in front of him, Li Shan's heart moved, and he immediately had an idea, and immediately stepped in.

As soon as Li Shan entered the toilet here, two people flashed out on the corner of the street in the distance.

The two looked at each other, nodded, and became invisible again.

Ten minutes passed, and Li Shan did not come out.

Twenty minutes passed, and Li Shan still didn't come out.

When thirty minutes passed, Li Shan was still nowhere to be seen.

The two men were a little anxious, and discussed it privately, so that one of them would be sent in to have a look.

After a while, the man came out dejectedly, and said to the other man, "Our buddy has been planted this time! That boy is really cunning enough, in fact, he has already found out about us, and he pretended to be like no one, and fooled us both, and he has already jumped out of the window and ran away." ”

The two scolded Li Shan for being cunning, but they were helpless, so they didn't know how to explain it to the man.

In fact, they overestimated Li Shan, and he didn't find the stalker behind him. There is just a feeling in my heart that because of the experience I have experienced, I have become more and more cautious in doing things.

The purpose of his entry into the toilet was to see if anyone would follow up, but he didn't expect to wait for a long time and not see anyone come in.

But this did not put him at ease, and it happened that he found that the window behind the toilet was facing another street, and he suddenly had an idea.

Regardless of whether someone is following you or not, as long as you jump out of this window, you can avoid some unnecessary trouble.

Li Shan pushed the window, but found that the window could only be opened halfway, and after a closer look, he found that a limit screw was installed on the window track, which prevented the window from running.

This small mechanism was not difficult for Li Shan, who was an assembler, he took out the key on his body, unscrewed the screw with the small scissors on it, and then pushed open the window and jumped out.

Li Shan's cautious behavior prevented a catastrophe for him.

When he got home, Li Shan put the jade away properly.

Thinking back on today's gains and losses, Li Shan felt that his behavior today was indeed a bit reckless, which brought him more experience in his future actions.

In order to ensure that the problems that arise during the field test of the engine can be solved in time, the military requires the factory to fully cooperate with the test work.

The workshop handed over the task of field service to the assembly section to complete, according to the past practice, if there are no special circumstances, similar to the field service such work, the section generally adopts a shift system, and this time it is finally Li Shan's turn.

Now Li Shan's technical level has been recognized by the section, although it has not yet been regularized, some important work in the section can be safely handed over to him to do.

Therefore, the section arranged for Li Shan to serve in the field this time, and everyone had no objection.

This time to the test site service, in addition to Li Shan, the other is the inspector Master Zheng. The workshop arranged two people to go together, in order to take care of each other in the complex environment of the field.

Li Shan sat on the train and looked excitedly at the scenery speeding by outside the window. He was leaning on the window looking at the speeding car on the highway next to him, it should be the highway, and he secretly compared the speed of the car in his heart.