The door of the courtyard house has been welded dead

The sky was bright.

No. 315, Xinzhong Street.

The sanitation workers were already cleaning the road.

Li Feng knocked his head with the palm of his hand and sat up from the sofa unsteadily.

Thirst, very thirsty. After a hangover, all kinds of negative buffs flooded into my mind.

He shook his head with a grin, then remembered what happened last night.

Mr. Shen invited Li Feng to his home for dinner. Jiang Xianda, the old drunkard, also wanted to go when he heard about it. Li Xuewen also went. Lao Ge, the project general manager who had a broken arm, was also called by Li Feng.

It was a small gathering of the senior leadership team of the steel mill, where they had a private discussion on the next direction of the steel mill.

Li Feng was not the only one who was keenly aware that the recent situation was a little strange. They were all smart people. There were newspaper racks in their offices. They read a few newspapers and thought about it in their hearts. They could all sense a strange atmosphere.

If the case of Li Huaide two years ago was considered an extremely rare major case, then with the in-depth implementation of the Five Antis campaign this year, it is obvious that there are more reports on cases similar to "Li Huaide" in the newspapers.

Of course, another "voice" has also emerged. At present, it simply expresses some different opinions, and it is very obscure.

No matter what they talked about, they drank a lot of wine. Even Chief Engineer Shen, who usually didn't drink, drank two cups with a sad face. He didn't look as happy as he was when he was promoted.

Li Feng didn't escape either.

I don't know if Principal Jiang Xianda's sense of smell was all used on alcohol. In order to solve the problem that Chief Engineer Shen was worried about, he would rather drink a few more glasses and get himself drunk, and of course, take Li Feng with him.

If Manager Ge, who can drink, had not been brought here, Li Feng would still have a hard time, but Li Xuewen would also be the type who would fall down after just a few drinks.

Walking to the water pipe, Li Feng took a glass of tap water and drank it. His throat, which was about to smoke, finally felt a little better.

"What's the point of saying good wine doesn't make you drunk? It's all bullshit~!"

After washing his face and brushing his teeth, Li Feng returned to the sofa and calmed down. He had no idea who had sent him back.

He lay back down on the sofa, leaning against the armrest, staring at the ceiling fan.

Li Feng was also worried about what Mr. Shen was worried about. He lit a cigarette and moved the ashtray on the coffee table towards him.

It's not that he is unable to solve the problem. It's only been a short time since the Li Huaide incident in the factory, just over a year, a few months short of two years, and someone has already forgotten the pain.

During the time I went to the archives school to study, the logistics warehouse was in a mess again. Is it because I am short of this little money? Can't my family make ends meet without those few pairs of socks? It's because I can't control my hands~!

The more he thought about it, the more annoyed he became. Feeling helpless about human nature, Li Feng stood up and turned on the fan switch, but the ceiling fan didn't move at all.

"Um, the power went out?"

I flipped the light switch again, but there was still no response from the bulb.

Walking to the stairs, Li Feng took a look and found that the power switch at the entrance was also pushed up. After unscrewing the black plastic screw of the switch, he found that the fuse had burned out at some point.

I rummaged through the drawers at home, but there was really no spare fuse. Looking at the disassembled door switch, I felt helpless again.

“Yes~!”

Li Feng returned to the sofa, feeling very irritated. Suddenly, as if something had happened to him, he took another look at the black electric switch at the entrance of the house.

This switch is very common. Push it up to supply power, pull it down to cut off power. This is what Yi Zhonghai used when he deliberately designed Jia Dongxu.

Because the electricians were not allowed in, the most important evidence was fixed by myself on the ceramic handle.

"Yes, this thing is made of ceramic~!"

Li Feng jumped up from the sofa, as if he had discovered something extraordinary. He stood at the bottom of the stairs again, staring straight at the ceramic base of the switch.

His gaze changed from calm at first to scorching, and finally the light bursting out of his eyes seemed to be able to melt the plastic cover.

"I'm so stupid, so stupid, I'm so stupid, why do I need a porcelain master in Ceramics Town? Isn't this thing already available?"

There was no fuse at home, but there was a screwdriver. I carefully removed the switch from the wooden board behind it, then removed the black plastic cover and shook it in my palm.

This ceramic base is indeed not light, but its heft means its internal density is high. The copper sheet inlaid on the ceramic base uses household three-phase electricity, is insulated, and is resistant to high temperatures.

He threw the ceramic base in his hand heavily to the ground, but it didn't break. This made Li Feng's eyes shine, as it seemed to be of high hardness.

This type of electric switch is generally produced by switch factories. In addition to the base ceramic on the switch, there is also insulating ceramic on the electric pole.

The insulating ceramics are about the size of a teacup, and look a bit like the logo of a Michelin tire. If you open the window, you can see the white insulating ceramics on the electric poles not far away. The ceramics used in the electric knife in your hand should be made of similar materials. There are some on every electric pole, and almost every household has an electric knife at home, which proves that the production of this thing is not low in this era, and there should be a special production line.

"If I can't find a ceramics factory in Beijing, can I not find a switch factory?"

After closing the window, Li Feng put the switch in his hand into his bag, didn't even eat breakfast, and went straight to the factory.

There are plenty of these things in the factory. I don't know how many of them the electrician team has to replace every year. At worst, we can find a matching switch factory at the construction site in the family quarters.

As long as the test is successful, Li Feng has a way to transfer people from the switch factory in Beijing, even without going through the General Logistics Department.

Moreover, compared with the ceramic masters who make household dishes, Li Feng even feels that the ceramics produced by the switch factory are inherently more suitable for the characteristics of bulletproof ceramics.

At seven o'clock, there were not even many people at work in the factory. After saying hello to the person on duty at the door, Li Feng went directly to the shooting range.

Slightly fix the ceramic base of the household electric switch in position, then simply pull out the gun and shoot. The crisp sound of gunfire echoes throughout the shooting range.

"Hahaha, haha, after searching for so long it turns out to be something you have never found before~!"

The ceramic base that didn't break even when it fell to the ground was shattered into pieces by the .45 caliber ammunition, and the area that was hit was shattered into pieces.

However, the bullet that bounced after deformation indirectly proved that insulating ceramics have a chance and are indeed much harder than ceramic cups and plates. The molding materials of the two are definitely different.

When it was time to go to work, Li Feng couldn't wait to find Mr. Shen with the broken ceramic knife in his hand.

"Boss Shen, I'm here to learn from you. I can't figure out some things. What's the difference between the ceramic base of this switch and the ceramic we use in our daily lives?"

After placing the broken ceramic remains on Deputy Director Shen's desk, Li Feng picked up his teacup and placed it next to it, moving his fingers back and forth between the two.

President Shen glanced at Li Feng, then at the things he brought, with a helpless expression on his face. He was still vacating the office, but since Li Feng had asked, he had no choice but to answer.

"The base of the switch blade is made of insulating ceramics, professionally called installation ceramics. It has very high requirements, not only insulation, but also heat resistance and shock resistance, including thermal conductivity, stability, small dielectric constant, low dielectric loss, and high electrical strength. These are all its advantages~!"

"As for daily household ceramics, you don't have to consider these. As long as they look good, they're fine. This one can withstand temperatures around 300 degrees, and this one can withstand temperatures around 1000 degrees. Because of the different materials, the insulation properties of the two are also very different~!"

Although he didn't know what Secretary Li was busy doing so early in the morning, Mr. Shen still explained the difference between the two one by one.

Although he didn't know much about this, he was still much better than Li Feng. This thing was used in many places among the machine tools in the workshop.

In Li Feng's opinion, Mr. Shen is worthy of his technical background. The vocabulary he speaks is almost comparable to that of a professional electrician.

But that was not what he wanted to hear, so he placed the ceramic base in front of Chief Engineer Shen.

"What's the difference in materials? This is insulating ceramic, so what material is it made of?"

"I don't know what materials are used to make it. I'm afraid I'll have to look it up in a book. If I want to know it quickly, I'm afraid I'll have to ask the electrician class for advice. But, is there a problem with this thing?"

Deputy Director Shen picked up the shattered switch base in front of him and looked at it over and over again, but couldn't find the problem. It was broken completely and there were no signs of high-voltage burning on it.

The cracked edges looked like they were caused by an impact.

"This thing is harder than ordinary ceramics~!"

"The strength and hardness of insulating ceramics are higher than ordinary ceramics. What's wrong with that?"

Chief Engineer Shen, who had not yet realized the problem, nodded and agreed with Li Feng's words. Until now, he had not reacted to what Li Feng wanted to express.

"This is what I shot at the shooting range this morning. Have you forgotten what we talked about last night? The factory is going to transform into a national defense industry, and one of the opportunities for the transformation is this thing~!"

"Opportunity?"

Picking up the broken pieces, Chief Engineer Shen tried to piece them together and indeed found what vaguely looked like a bullet hole.

"The grille armor has proven to be effective in defending against rockets, and this insulating ceramic can be used to defend against bullets~!"

The extruded and deformed copper bullet was placed in the hole. Now Deputy Director Shen finally knew what Li Feng was busy with so early in the morning.

Looking up at Li Feng, then looking down at the ceramic base in front of the table, Shen Jiashi's expression finally changed.

Who would have nothing to do and use insulating ceramics as a target? The only one who would do that is Li Feng in front of him. But his brilliant idea seems to make some sense.

Technically speaking, the strength of insulating ceramics is indeed not low.

"I think it's strong enough, but there are too many screw holes on the base, which causes the bullet to break immediately after impact. At least, it's harder than a copper bullet~!" (End of this chapter)