Under everyone's attention, Li Sichen didn't rush to make a move, but pointed to the can in front of Zeng Yi, and said, "Have you finished drinking?

"Huh, you want to use it? No problem. For Li Sichen, Zeng Yi is naturally 100% supportive. However, he didn't immediately hand the can to Li Sichen, but after raising his head and drinking all the remaining drinks inside, he licked his lips and gave the can to Li Sichen.

Facing everyone's speechless gazes, Zeng Yi smiled and said, "What, you can't waste food!"

Everyone didn't say anything, but complained in their hearts: "What a foodie!"

At the same time, they were also very curious, what did Li Sichen want to do with the can? Could this thing still be used to make real things?

In Ren Yilong's eyes, a flash of surprise flashed.

"The cans are made of aluminum, plus sulfuric acid, potassium hydroxide, and these devices...... Could it be that the real yàn that this kid wants to do is to prepare alum from discarded aluminum cans? But this real yàn will not be learned until college. He, Li Sichen, is just a freshman in high school, how could he do such a difficult realization? Impossible, this is a coincidence, it must be a coincidence......

Speaking of which, Ren Yilong is no stranger to the real yàn of alum prepared from discarded aluminum cans. When he was in college, when he was doing this practice, he was severely reprimanded by the teacher for his operation error. Now, seeing that Li Sichen actually wanted to challenge this reality, the thought that flashed in his mind was impossible.

However, his guess was soon proven wrong.

Because Li Sichen immediately said: "The real yàn I want to make is to use waste aluminum cans to prepare alum. In fact, this is quite simple. But the equipment and potions here are limited, so I'll just barely make this one to make up the numbers. ”

This is very simple? Barely do it to make up the number?

Did you deliberately say that to mock me?

The corners of Ren Yilong's eyes twitched.

When he was in college, he was criticized by his teachers because of this reality. Now that Li Sichen is saying that this is really very simple, isn't he saying that he is stupid in disguise?

Hmph, don't think I don't know, you must have seen a description of the preparation of alum from discarded aluminum cans somewhere. I thought I understood, mastered, and was able to do this. Now I won't talk about you, wait until you fail, and then slowly settle accounts with you!"

Ren Yilong held back his anger and waited for the moment when Li Sichen failed.

Li Sichen didn't look at his expression at all, let alone what he thought. Once the cans are in hand, they are dismantled with scissors, sandpapered and cut into small pieces.

This series of actions is very cumbersome, but Li Sichen is quite fast. At first glance, the technique is extremely skillful.

Ren Yilong was surprised and confused: "This technique is fast and steady, it's really not something ordinary people can do! Could it be that this kid named Li Sichen has really done a lot of chemical practice?"

Just when he was surprised, Li Sichen had already picked up the extremely fast aluminum sheet, weighed it, put it into a beaker, and then added potassium hydroxide, heated and stirred to speed up the reaction......

The actual process of preparing alum from discarded aluminum cans was presented step by step in Li Sichen's hands. And Ren Yilong and the students in the third class of the first year of high school have also become more and more concentrated and looking forward to it with the progress of this reality.

If it is said that when the real yàn did not start, Ren Yilong had an opposing attitude towards Li Sichen. And at the beginning of the practice, his attitude changed to suspicion. So now, his attitude towards Li Sichen has changed into shock and admiration!

Li Sichen's technique in the process of implementation is not only accurate and fast, but also very stable!

In chemical practice, stability is also the most important.

Before that, Ren Yilong had always felt that he was very stable. He even often boasted that among so many chemistry teachers in Nanshan Middle School, he was the most stable one. But today, after seeing Li Sichen's cousin, he knew what real stability looks like!

In the whole process of realization, Li Sichen's hands were steady, just like a precision machine, and there was no deviation at all!

It's not easy to do this. But Li Sichen, in addition to being stable, is actually very fast and accurate!

Steady, accurate and fast!

These three standards seem to be tailor-made to describe Li Sichen.

Things have developed so far, Ren Yilong has realized that Li Sichen said that he didn't want to do it before, and it was not a lazy excuse to lie, but a big truth.

People who have this kind of basic skills that are exquisite to the point of perversion must have practiced it countless times. For such people, diluting concentrated sulfuric acid is indeed so simple that it is boring. Not only that, but even the current real yàn of using waste aluminum cans to prepare alum is probably very boring for Li Sichen, right?

"This Li Sichen, how did he practice such a perverted basic skill? It's just a demon!" Ren Yilong sighed at the same time, but he couldn't help but be a little excited: "The demon is good! With such a demon, in this year's National Chemistry Competition for Middle School Students, our Nanshan Middle School may be able to win the crown! Hahaha, good, good thing!"

Ren Yilong, who had regarded Li Sichen as a thorn in the eye and wanted to clean it up vigorously, was completely convinced at this moment...... Not only did he forget about the previous unpleasantness, but he even regarded Li Sichen as a treasure, how to look at it and like it.

At the same time, the students in the third class of the first year of high school were also talking in a whisper:

"This real yàn looks so complicated, it's really not simple and difficult!"

"These actions made by Li Sichen will also be used when we do practical yàn. For example, stirring a solution with a glass rod. But why did Li Sichen make it so smooth and so good-looking?"

And I think that Li Sichen is not only better than us, but also better than Teacher Ren...... Hey, doesn't this mean that Li Sichen's attainments in real life are higher than those of Teacher Ren?"

These whispers of the students also reached Ren Yilong's ears.

If it was before, Ren Yilong would probably be angry. But at this time, what he said was: "You are right, Li Sichen's attainments in real life are indeed much higher than mine." At least in terms of basic skills, I am far inferior to him. You have to learn from Li Sichen, his basic skills have reached the point of perfection, so you will feel that every action he does is very good-looking, just like art!"

Art?

That's right, it's art!

Li Sichen stiffly made a chemical reality into an artistic feeling!

Under such circumstances, it is not surprising that Ren Yilong's attitude has changed 180 degrees, from erecting negative teaching materials to calling on everyone to learn from Li Sichen.