The students who studied by themselves last night hid and watched. The girls chirped. Su Yun attracted the most attention.

They don't care about fan Tianshui's deterrence. After all, they are still young and don't understand what kind of existence it is. But with the headmaster, they could see their eyebrows more or less. They didn't dare to provoke the headmaster at this time.

Fan Tianshui had no tools in his hand. He looked at it, broke a section of the alloy embedded outside the machine, clamped his fingers on it, made a slight force, "pa", and the metal broke gently and skillfully like paper paste.

Headmaster he's eyes jumped. Fortunately, he didn't provoke this guy, otherwise he would be so suddenly

It's really scary. It's not a human, it's a robot.

The broken metal piece became a sharp tool in fan Tianshui's hand, just like a screwdriver. After a few minutes, the baffle of the juicer was removed.

"Old fan, you're doing a good job." Su Yun praised.

"Well, survival in the wild is one, and survival in the city is another. We have to train." Fan Tianshui said skillfully dismantling the machine.

"Your skill is good. Why were you so sleepy that you couldn't even do appendicitis?" Su Yun asked.

Fan Tianshui smiled and didn't answer.

Su Yun is idle and uncomfortable. He doesn't have the idea of prying into fan Tianshui's privacy. Even if he asks, it's normal to have no answer.

Zheng Ren didn't pay attention to fan Tianshui's skills. He was concerned about whether there was copper exposed inside.

Sure enough, when fan Tianshui opened the machine, he found that there was a copper ring with no cover around the doorway. This position of the copper ring made the liquid inside contact with the copper continuously. Repeat the manufacturing process leading to this event to obtain high concentration copper in beverage solution again. (Note 1)

"Boss, it's true. No wonder the orange is all right. It's the problem of the machine. Fortunately, I found it. Otherwise, some students will be poisoned." Su Yun was relieved to see the metal copper ring and finally found out what was wrong.

"Well, it is." Zheng Ren said, looking at the principal, and asked, "who has the final say?"

Headmaster he was ashamed and angry.

This is a slap in the face, an undisguised slap in the face!

I clearly saw him at noon. He pretended not to know him. Even the Nobel laureate can't be so arrogant.

"Boss, that's the principal of No. 2 middle school. His last name is he. I met him at noon." Su Yun sighed and said helplessly.

Zheng Ren's eyes are just mosaic pieces. Who knows who he is.

"Headmaster he, take a look and we'll leave after we're sure." Zheng Rendao.

Su Yun kept taking pictures with his mobile phone. Headmaster he looked dignified and asked, "this little comrade, are you taking pictures..."

"I'm not suing you. I'll scare you. If something happens, I know to cover the lid. Can I take some responsibility? If I do a good job at ordinary times, I don't have to be afraid." Su Yun said contemptuously, "this is an excellent paper material, enough for at least one person to promote."

"...." president he was speechless.

But he dared to look closer and saw a copper ring in front of him.

"What's going on?" Headmaster he asked suspiciously.

"It is estimated that it is the problem of machine manufacturing, and the sealing is not strict." Su Yun said, "the orange juice squeezed out is acidic. Copper is integrated into the orange juice. When children drink high concentration orange juice, they are naturally poisoned by copper."

"Er... Acid... No, it's just that the taste is a little sour. Can it be acid?" Headmaster he asked suspiciously.

"Well, yes, the pH of orange juice is about 2-3. The pH is enough."

"Impossible! The pH of hydrochloric acid is 2!" Headmaster he doesn't believe this at all.

"You... Forget it. I'm too lazy to explain to you. Go to the chemistry teacher and then the biology teacher." Su Yun said contemptuously, "the acidity of coke is basically 2.2. Do you know how to use coke to connect the sewer? Some intestinal obstruction in the hospital still use coke to connect."

When it comes to the most professional knowledge, president he is confused directly. He looked at Su Yun blankly. His handsome face was filled with a mocking expression. He couldn't hide it. He didn't want to hide it at all.

"Brother Yun, do you need to take it down for inspection?" Fan Tianshui asked.

"Hmm? Can you take it down?"

"If it's welded, just break it off." Fan Tian said, "I'll do it if I need it."

"OK, I'll take a picture, break it down and send it to the city."

"That's mine..." the suit man was crying at this time. This machine is his own. Just break it?! He saw what Fan Tianshui had just done and had no doubt that the big man was shaking himself.

But only half of the words were covered by an employee.

"Manager, manager, don't beep." The employees were also worried and spoke impolitely. "If they say we poison, I guess you'll have to be thrown into the Bureau."

The suit man was so stupid that he poisoned... Such a serious crime should not be.

In the struggle, a complete machine had been disassembled by fan Tianshui. He finally broke off the copper ring and handed it to Su Yun.

"Headmaster he, let's go." Su Yun said with a smile, "this matter, you find time to talk to the students' parents, the CDC... By the way, and the public security bureau to explain."

With that, Su Yun picked up his cell phone and began to call ringer.

"That little brother is so handsome." A girl said.

"What are you looking at? That big guy is powerful. When his fingers are clamped, the steel bar breaks." Boys see the world from different angles.

"Are they 912?"

"It seems that the little brother is really handsome. I don't know his name."

"I'll ask."

"How dare you catch up?"

"I know the aunt of the canteen and said they went to the canteen in the afternoon."

"Ask and tell me."

"No! That's my little brother."

The girls' noise soon drowned the boys' feelings for fan Tianshui's bravery. Headmaster he should have shown his dignity as a teacher, but he was just offended by Su Yun. He felt that he had no face and had to leave in a hurry.

There are a lot of broken things behind. Which dog day did this machine enter? The metal copper was exposed. Isn't it harmful to people!

However, no matter who entered, they all signed by themselves. In No. 2 middle school, president he grasped the financial rights and human rights. He couldn't enter without his signature.

Usually it looks majestic, but at this time, responsibility becomes a big stone. If you are not careful, you will crush people to pieces.

Note 1: in an American case, if you are not familiar with the internal structure of the machine, you will not describe it blindly.