The advantage of the time-traveler is that knowledge beyond a thousand years can often produce many miracles, which seemed to the ancients to be as incredible as miracles.

Hearing that Li Qinzai was going to play tricks, the elated buckwheat came out of the courtyard and shouted a few times, and the news suddenly spread.

The whole Zhuangzi people know that Li Qinzai's trick is definitely a shocking miracle, and the little bastards and the villagers still remember the cannon battle made by Li Qinzai years ago, and the loud sound like thunder is still triumphant when people who are lucky enough to see it with their own eyes still say it proudly.

Today, I heard that Li Qinzai was going to play tricks again, and after the news spread, in the school at the southern end of Zhuangzi, Li Sujie and a group of gentlemen rushed towards the other courtyard.

The students of Guozijian who didn't know the truth saw that the gentlemen had run away, and they didn't care about running along, anyway, they would make the gentlemen flock to it, even if it was a piece of shit, they would grab it.

Outside the courtyard of the Li family, the crowd quickly surrounded the inner and outer three floors.

Li Zhi in the backyard was also alarmed, and immediately ran out of the gate, Wang Changfu said in a sharp voice, and the students were startled, and they took a few steps back and bowed.

Li Zhi easily occupied a best viewing position, crossed his hands on his abdomen, and waited for Li Qinzai to open with a smile and a groan in the small theater.

Li Qinzai is undoubtedly the most beautiful boy in the crowd, seeing the dense crowd around him, Li Qinzai's cheeks twitched a few times, and said with a wry smile: "I'm just getting something new, you don't have to be like this, I'll tell you the principle when I look back, this is also a part of Gewuxue......"

Li Zhi smiled: "Jing Chu's new gadget, which one is not shocking?" Let's get started, I've been waiting a long time. ”

Li Qinzai had no choice but to turn his head and tell Liu Asi to find a large wooden barrel, a copper basin, and a few catties of saltpeter.

Saltpeter is the raw material for making gunpowder, and when Li Qinzai made artillery battles, there was a lot left in his family.

Half of the water in the barrel is filled, and then the saltpeter is thrown in, and the water in the barrel reacts instantly, and it gurgles as if it is boiling.

The copper basin filled with drinking water floated on the surface of the barrel of water, and stood still.

The crowd gathered around curiously, staring at the barrel without blinking.

Soon, the unthinkable happened, the water in the barrel quickly froze in a visible state, the clear water surface quickly turned into translucent ice cubes, and the drinking water in the copper basin resting on the surface of the barrel also quickly froze.

I don't know who took the lead and let out a terrifying scream, and the crowd exploded.

In the hot summer, witnessing a little water turning into ice is not only a miracle, it is simply a fairy law.

Li Sujie's face flushed, and he stretched out his finger and touched the ice in the barrel without giving up, and then quickly retracted it, the green tendons on his neck jumped violently, and he yelled: "It's ice!" It's really ice! Sir, the immortal spell turned water into ice! ”

Li Qinzai's old face darkened, and he didn't care that Li Sujie's father was on the side, so he stretched out his hand and knocked Li Sujie's head: "Don't learn something that doesn't have skills!" If there is an inexplicable phenomenon in the world, it is said that it is an immortal law, so what else do you need to learn? ”

Li Zhi on the side was already dumbfounded, and said deliciously: "Could it be that this is also due to Jing Chu's knowledge?" ”

Although it was very similar to Li Sujie's stupid appearance, Li Qinzai didn't dare to knock Li Zhi's head, so he had to say: "Yes, everything in the world can change, if you know its laws and make it react with other things, everything can change ten thousand things, one million things." ”

"This is another science of the minister, called 'chemistry', as the name suggests, this is the science of the change of all things, and the gunpowder created by the minister is also a part of chemistry."

Li Zhi stretched out his hand into the bucket, felt the cold and piercing cold in his fingertips, and bent his fingers to knock on the ice, then took a deep breath and sighed: "The talent of Jing Chu can make me breathtaking and astonising every time. ”

Li Qinzai smiled, ordered someone to take an iron spoon, knocked it on the ice surface in the copper basin for a while, knocked down a small piece of ice, and stuffed it into the buck's mouth.

Buckwheat had ice cubes in her mouth, and a cool and refreshing feeling spread from her mouth to her abdomen, and she suddenly smiled comfortably.

Li Qinzai smiled and said: "Ice can relieve the heat, but it should not be too much, it will make you upset." ”

Buckwheat nodded, but still greedily smacked the ice in her mouth.

Li Zhi also knocked a piece of ice and put it in his mouth, and made a comfortable sound, and the students next to him rushed up, each took a piece of ice, and Zhu Bajie swallowed it in his stomach like eating ginseng fruit.

After chewing a few pieces of ice, Li Zhi looked at the small appearance of buckwheat happily sipping ice cubes, and Li Qinzai's doting eyes, Li Zhi suddenly thought thoughtfully.

"I was drinking grapes with you today and there was a lack of ice, why didn't you make it then? Buckwheat feels that the weather is hot, and your ice cubes come into being, Jingchu, what do you mean? ”

Li Qinzai was taken aback, and said without blinking: "The lord is worried about the humiliation of the minister, and the minister worked hard precisely because His Majesty drank the wine and lacked ice, and he came up with a method that took a whole afternoon, Your Majesty must not misunderstand." ”

Li Zhi smiled and said, "Isn't it because buckwheat is too hot?" ”

"Of course not, this is a piece of the minister's heart dedicated to His Majesty."

Li Zhi snorted and said, "I'll just pretend to believe you...... With the ice, I can drink the grapes. ”

Li Qinzai said: "Your Majesty, don't forget your old illness, this disease is not suitable for drinking, not suitable for meat, Your Majesty has not been sick for more than half a year, if you give up your achievements because of the things in this cup, wouldn't it hurt the national capital of the Tang Dynasty?" ”

Li Zhi was stunned for a moment, and then sighed with a wry smile: "Jing Chu, you are too disappointed!"

Although he was disappointed, Li Zhi still listened to Li Qinzai's words, snorted stupidly, knocked a large piece of ice from the copper basin, held it in his hand and slurped, and went back to the backyard.

After Li Zhi left, Li Qinzai looked around at the students around him and said: "The way of clear calculation is not just about addition, subtraction, multiplication and division, not just to get the answer to a certain question, the real meaning of knowledge in the world is to apply it to the world, and simplify the process of people's clothing, food, housing and transportation." ”

Li Qinzai stretched out his hand to pick up a piece of ice and said slowly: "Use the knowledge you have learned to create things that ordinary people don't even dare to think about, this is the true destination of learning." ”

Li Sujie and the others saluted solemnly: "Thank you, Mr. Mingxun, the disciple has been taught." ”

Li Qinzai said: "How to turn water into ice, the process is very simple, but the principle is very complicated, there is a laboratory in the school, its role is to often do some similar small experiments, but at the moment, you still have to learn to calculate well, and only after learning can you slowly get in touch with more esoteric physics and chemistry." ”

All the students should salute.

Behind the gate of the courtyard, Li Zhi stood quietly behind the door and listened to Li Qinzai's words.

After a long time, the corners of Li Zhi's mouth hooked and muttered: "Turn water into ice...... It is indeed a disciple of the Mo family, only the Mo family in the world will have this great talent, if he can really apply what he has learned to the world, the Tang Dynasty is lucky. ”

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