At this time, Wen Changyao and the others had completely sobered up, and they didn't know why the leader was so interested in the medicinal powder that he and the others had come up with to catch frogs, but he still honestly explained the cause and effect.

"Originally, Sister Miyoshi said that charcoal, nitrate, and sulfur can kill insects and prevent moisture and plague, so I asked Fubao to work with us, and planned to use these raw materials to make some pills according to the ratio, so that everyone can use them for daily backup......"

Then, rubbing and rubbing, things began to go in a direction they didn't expect.

By chance, the balls made with these three materials actually burned, and then there was a bang, and the clay pot used to hold the balls was blown apart.

At that time, because it was in a laboratory, and the balls were relatively small, it did not cause many people.

Zheng Sanhao was also startled at first, but there were no casualties, and the students checked for a while, guessing that it might be charcoal and saltpeter powder burning, and the temperature was too high, so the clay pot couldn't withstand cracking.

Since there were no casualties and the explosion was too small, the students did not pay attention.

Only Xu Fubao squatted on the field after the explosion and watched for a long time, and then, because of his sensitivity to numbers, Fubao suddenly thought of the ratio of pills.

Eventually verified, she found a discrepancy between pills that exploded and those that didn't.

Then, the students began the official first explosion experiment, that is, the day Wang Dayou and others discovered the loud noise.

This loud bang scared Zheng Sanhao and Xu Fubao a little hard, but since then, the two of them have found a new continent and are out of control.

"These two bottles of black fire powder are re-mixed by Fu Bao and Sister Miyoshi, take a small amount and press it in a bamboo tube, and light it with a kneaded cotton thread, which can explode and blow up the fish and frogs in the river."

Wen Changyao explained proudly, and at the same time added in his heart that there is no need to go down to the field in the middle of the night to catch frogs.

Fu Bao and Sister Miyoshi are still thinking about increasing the concentration a little more and making more powerful black fire powder, which can be directly used to fry the wild boar's nest when the time comes.

Xu Yue quietly listened to Wen Changyao's explanation of the cause and effect, and realized that the students had not yet understood the true use of gunpowder, and immediately breathed a sigh of relief.

It was already getting late, and the results had already been seen, and Xu Yue's heart had also been put into practice, and it would be a bit too much to toss it any longer.

Then he waved his hand and asked Wen Changyao and the others to go back and continue to rest, and when they woke up tomorrow, they would show her how they used black powder to fry small fish and frogs.

"I'll keep these two bottles of black powder first." Xu Yue naturally confiscated the two bottles of black powder.

Although this kind of black powder made by the earthen method is not very lethal, it is really not reassuring to have a group of students who know nothing about it in their hands.

Wen Changyao and Xu Fubao glanced at each other, and out of absolute trust in the leader, they nodded obediently, and did not ask for the black fire powder that they had worked so hard to develop.

Seeing the students return to the dormitory, Xu Yue turned to the three behind her and said, "Let's rest first, and we'll talk about it tomorrow morning." ”

After tossing for most of the night, Sima Yi's curiosity about what the earth-shattering appearance finally dissipated most of it, followed Xu Yue back to the Xu family's old house, and fell asleep.

The next day, he got up early in the morning to see what the black powder could do.

Xu Yue also got up early, and her spirit didn't seem to be very good, so she must have not slept well last night.

Junmei brought breakfast from the school cafeteria, and after the four of them ate together, they walked towards the school.

Zheng Sanhao, who had been notified in advance, was also in place, plus Xu Fubao, Wen Changyao, and two other medical graduates, and the group took the two bottles of black powder confiscated by Xu Yue last night, and came to the small river in the village.

Xu Yue handed them a bottle of gunpowder, led everyone to stand at a safe distance, nodded, and signaled that they could start.

I saw that the students brought a bunch of small bamboo tubes, each only the thickness of a finger, which was cut from Nanzhu.

Zheng Sanhao took out the kneaded cotton thread from the prepared box and put it in the bamboo tube first, deliberately leaving a section to be exposed.

Then use a ceramic spoon to scoop out a spoonful of black powder and pour it into the bamboo tube, and finally pick up a piece of wet mud on the side of the road to seal the mouth of the tube.

In this way, a simple mini bomb is ready.

Wen Changyao took the small bomb, picked up Xu Fubao and lit a piece of sandalwood handed over, and lit the cotton thread.

As soon as the "bang" sounded, the cotton thread ignited, and people were nervous for no reason.

Wen Changyao seemed to have done it many times, waiting unhurriedly for the exposed cotton thread to burn to the end, and then threw it into the river.

With a soft "bang", the small bamboo tube submerged into the river, and then a gray bubble came out, and then, with a "bang" sound, there was a high splash on the river!

Everyone on the shore was far enough away, but their clothes were still splashed by the flying water.

Xu Yue, who had expected it for a long time, looked as usual, and only her pupils constricted for a moment.

But Sima Yi and Jun Mei were different, and it was the first time that the two of them felt the power of the explosion so closely.

Although it was a non-lethal splash, the loud noise, as well as the two or three fish slowly floating on the river, revealed that this small bamboo tube contained a huge threat.

"That's amazing!" Jun Mei was surprised.

This is only a small spoonful, if you add two spoonfuls, wouldn't it be twice as powerful?

Sima Yi clenched his fists hanging at his side, and his gaze turned to Xu Yue, who was as pale as usual, and his eyes were obscure.

This black powder, I'm afraid, is not as simple as listening to a sound.

Moreover, looking at Xu Yue's unsurprised appearance, she seemed to have known about the existence of this black powder for a long time.

The only reason that could make her show such a gaffe yesterday was probably only one.

That's - she didn't expect the students in Zhuangzi to make this black powder!

The small explosion was successfully displayed, and Wen Changyao and others came to Xu Yue with the stunned fish, excitedly waiting for praise.

Zheng Sanhao said: "Chief, I guess that the power of this black fire powder can be even higher, so I have recently been trying to find a way to extract more concentrated nitric acid from saltpeter, and I want to continue to try more formulas, what do you think?" ”

Nitric acid?

Xu Yue's eyes widened, it was the first time that she felt so strongly that the student was too studious, which made the teacher feel scared.

This Zheng Sanhao, is it possible that he still wants to give her nitroglycerin?

If that's the case, the Explosive Heat Weapon will surely sweep all battlefields with great power!

Xu Yue took a deep breath, suppressed the nerves that were a little too nervous, looked at the innocent eyes of the students, and thought to herself, maybe the people who made explosives in the first place didn't know what they would bring to the world.

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