After three days of basic training.
When the sun rose on the fourth day, Zhang Feng was dragged out of the palanquin in a daze by the servants. They threw him at the gate of Chang 'an University and left without any sense of loyalty.
Zhang Feng squatted at the gate for a long time before he came back to his senses. He rubbed his groggy cheeks and walked into Chang 'an University.
The security at Chang 'an University was particularly strict today.
Other than Jia Daoren who was pacing back and forth at the entrance with the Mo Blade, he had also mobilized over 30 burly men from White Deer Academy.
In the hands of these men, there was a strange diamond-shaped object that looked like bamboo strips.
Those who knew would definitely know its terrifying name.
Mitsubishi Army Knife.
Those who didn't know would think that it was a game.
In the courtyard where Zhang Feng needed to do the experiment today, there was no one else except for Zhang Feng, Li Chengqian, and the others.
In the middle of the courtyard, Li Chengqian and the others built an open-air laboratory for Zhang Feng according to the scale of the laboratory in his room.
There was a white cloth list on the table, which was filled with the things needed for the experiment.
The little remaining alcohol had been divided into countless alcohol lamps, which were burning fiercely.
There were even a few that were not enough, so they could only use tung oil lamps to replace them.
On the experiment table, there were not only phosphor ores, but also some saltpeter, charcoal, and other things that Zhang Feng had collected himself. There were even some rust that would only appear in water that had not been touched for a long time. The red and green things were placed on the table.
When they saw Zhang Feng arrive, they quickly stood up straight.
"Hello, Dean!"
Zhang Feng waved his hand and asked them to sit down. Then he said, "I won't talk about the rules. Today's experiment is very important. It is important enough to change the history of the Tang Dynasty and the current farming methods. Are you all ready?"
"Ready!"
How could they not be ready?
What kind of situation was this?
Moreover, ever since Zhang Feng had mentioned the beauty of the world, their Lao Tzu had directly pointed at their noses and said that if they could not learn, they would be expelled from the family!
Who the f * ck could stand this?
The others were fine, but what about Li Chengqian?
He was the Crown Prince!
Although it was impossible to expel him from the family, it would greatly affect his reputation and his father's impression of him!
This was something he couldn't bear.
This was tantamount to erasing his path to becoming the Crown Prince!
After they left, Zhang Feng picked up the experimental equipment on the test bench and said, "Although the extraction of phosphorus is simple, it is also a bit troublesome. Our main task is to analyze the composition of phosphorus."
"Have you all understood the composition of phosphorus?"
This was something they had been memorizing for the past few days. If they couldn't remember it, Zhang Feng would really go crazy.
After they nodded, Zhang Feng pointed to a glass container that was as big as a washbasin and said, "In fact, the experiment of extracting phosphorus fertilizer is very simple. You just have to grind the phosphorus ore and separate it. Then, you distill it into phosphorus vapor through this container. Then, you pass the vapor through this pipe and guide it into this glass container. Let it meet water and naturally dissolve and precipitate …"
Zhang Feng explained the steps of the phosphorus experiment. Then, he asked Li Chengqian to come up and wear special rubber gloves. Then, he ground the phosphorus ore. This step was very simple.
On the other side, Zhang Feng filled the container with water and placed it on the oil lamp. After adjusting the flame of the oil lamp to the highest, he poured the phosphorus powder into the water.
At this moment, something unbelievable happened to Li Chengqian and the others.
Following the burning of the oil lamp, the glass container began to boil violently. Then, the glass container slowly turned misty.
After that, no one could see what was inside. However, they could see that in a curved glass tube at the top of the container, a trace of mist was slowly flowing toward the other end of the tube due to pressure.
The other end of the tube was placed at the bottom of another container.
Slowly.
More and more mist entered the other container, and gradually, the mist became heavier.
Zhang Feng also pointed to the container and explained steam dynamics to everyone.
However, at this moment, what Zhang Feng didn't notice, what everyone didn't notice, was that the water in the container that was being heated by the oil lamp slowly dried up. However, because of the mist, no one noticed it.
Only a loud 'bang' was heard.
In an instant, all the glass containers on the test bench exploded. Even the glass fragments were directly blown far away. Zhang Feng's back and the faces of Li Chengqian and the others were instantly sprayed with a large amount of steam atomized powder containing phosphorus elements.
"Ugh —!"
This time, everyone was dumbfounded.
Although no one was injured due to the cooling of the draft tube and the steam was not hot, Zhang Feng was the first to react.
He hurriedly shouted, "Everyone, immediately cover your mouth and nose. Go and drink a jar of vinegar!"
？？？
Everyone was dumbfounded.
What kind of operation was this?
Wasn't this just setting off a firecracker?
Drinking vinegar?
However, everyone still followed Zhang Feng's instructions and ran weakly to Chang 'an University.
Looking for vinegar to drink …
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