Li Er felt very strange. It seemed that there was a lot of secrets here.
But after thinking about it, he suddenly felt something was wrong, "Well, Master, this thing is easy to use, but if it requires some human blood sacrifice..."
"Bah, Lao Li, where are you thinking? We are eating here!"
Li Sheng rebuked directly, and then laughed, "Simple things, simple phenomena, but the truth behind them may not be simple."
"Take swords as an example. Lao Li, do you know why the blade can cut things but the back can't?"
"This... there is no reason for this. Of course you can't use the back of a knife to cut things!"
"Yes, let me ask you, Lao Li, why can't the back of the knife cut?"
"Because... the back of the knife is blunt, so naturally it can't be done, right?"
"By the way, then... what does 'blunt' mean?"
Li Er was stunned for a moment. What does "blunt" mean?
How does he know what blunt means? What is blunt is blunt? How can there be any explanation for this?
Li Sheng laughed, "Look, the blade seems simple, but it's not that simple in fact. The so-called 'blunt' means that the contact area between the utensils must be larger."
"When two objects are in contact, and the pressure is the same, the smaller the contact area, the greater the pressure... For example, if a piece of iron weighing two ounces is placed in the mud, the iron will sink, and if it weighs two ounces
A heavy piece of paper means..."
At this moment, Li Sheng directly transformed into a kindergarten teacher and explained the principle of pressure as if giving a class to primary school students.
It's actually a very simple formula, pressure ratio to contact area equals pressure!
It couldn't be simpler.
Li Er, Wei Zheng and others listened and nodded.
Listen very carefully!
And didn't understand anything.
It’s totally like listening to the heavenly book!
If each word is taken apart individually, everyone knows what it is, but when put together, it is simply like a chicken talking to a duck!
What makes Li Sheng extremely depressed is that,
After talking for a long time, he discovered this himself.
Embarrassing, extremely embarrassing!
Li Sheng had no choice but to sigh and thought to himself, find another example to tell them.
It’s not that he likes to lecture others so that he can be a teacher or something like that, but he can’t just watch these people engage in superstition. How can superstition work? It certainly won’t work.
So Li Sheng thought about it and decided to continue talking, even if he didn’t understand!
"The science in this example is actually a relationship... What is the relationship? The pressure is divided by the contact area, which is the pressure. The greater the pressure, the greater the destructive power, so there are two ways we can increase the pressure.
The first one is to increase the pressure, and the second one is to reduce the contact area."
"Look at this sword, the contact area is actually very small, so the pressure will naturally increase, and the destructive power will also increase. Do you understand?"
"I understand, I understand! What the young master said is absolutely true!"
Li Er burst into laughter, and Wei Zheng and others even beamed with joy.
Li Sheng talked for a long time, but they didn't understand even a single word.
Who do you want to ask to read the Heavenly Book?
But that doesn't stop them from being very happy.
Since even I and others, the most intelligent group of people in the Tang Dynasty, don’t understand the secrets here.
At this time, you want Turkic barbarians to understand this kind of thing?
Have you washed the horse shit and sheep urine off your butt?
Realizing this, how can everyone be unhappy?
New weapons, new ordnance, these are the crystallization of wisdom, there is no way they can be used by the Turks!
Li Sheng saw everyone laughing happier than the other, and he didn't know if these people understood it.
But anyway, he tried his best, so he continued, "If you really don't understand, I will explain it to you later, or I will simply compile a textbook, and then you..."
Li Sheng said here,
Li Er, Wei Zheng and others were drinking and eating food with a comfortable smile on their faces. The moment they heard this, they almost spit out everything in their mouths——
"Sir...Sir, you want to write a book?!"
Everyone's eyes widened and they looked at Li Sheng in disbelief.
Li Sheng was confused for a moment, "What's wrong? There's nothing wrong with this, right? Get this book out. If you still don't understand something, you can look back at it..."
Before Li Sheng finished speaking, Li Er was completely stunned.
Even Queen Changsun was full of surprise.
Wei Zheng, Du Ruhui, and Li Jing even stood up on the spot: "Young Master is a great virtue, and we would like to thank you on behalf of the people of the world!"
It was so shocking that they never imagined that Li Sheng would actually write a book about the countless secrets he had learned and spread them throughout the world...
If Li Sheng was an old man, then this would not be surprising. It would certainly be a good thing to have a long-lasting reputation.
But Li Sheng is only a teenager!
If you publish a book before you are still young, aren't you afraid that others will learn your skills and you will no longer be able to live as a rare commodity?
Li Sheng was also stunned by everyone's reaction.
What, I just compiled a primary school textbook, and you all reacted like this...
If one day I study calculus, wouldn’t all of you have a heart attack?…
Weird and strange...
The whole meal was full of fussing, and Li Sheng was also confused.
After eating, everyone went out for a walk.
Li Erzheng wanted to ask when he could see this book.
He has decided that as soon as this book comes out, he will immediately collect ten copies!
But at this moment, Du Ruhui suddenly said "Huh?"
Then Wei Zheng asked, "What's wrong?"
Everyone looked at Du Ruhui and saw a strange expression of confusion on Du Ruhui's face: "The farmers in this village seem to be a little different from those outside."
Everyone was startled when they heard this and took a look...
They are all ordinary people, there is no difference, right?
Li Jing suddenly became nervous and whispered to Li Sheng, "Sir, there won't be any Turkic soldiers pretending to be among these people, right?"
"I'm kidding, where were you thinking? But...it's not any different?"
Du Ruhui's words made Li Sheng feel very strange.
The farmers here are definitely not Turkic spies disguised as agents, but there really is nothing special about them.
What did they see?
So Li Sheng continued to ask.
But Du Ruhui just shook his head, "I don't know either, but... something is indeed wrong."
At this time, Li Er suddenly saw it.
"By the way, why are the plows used by these farmers...why are they curved?"
When Li Er said this, everyone was startled.
Then, it dawned on me.
If you look closely, you will see that it is really curved!
And not just one or two, the plows used by everyone are curved.
A plow is no bigger than other agricultural tools.
The size is not small, and the wood material obviously cannot be permanently bent.
After hearing what Li Er said, Li Sheng also understood.
Have you been talking about this for a long time?
"Oh, this plow is indeed different from the outside. This is my improved plow. Compared with the original straight-shaft plow, it is somewhat less labor-intensive."
Li Er was stunned for a moment, his mind brightening.
Uh... no wonder you can't see anyone using oxen to plow the land. They all use... wait, don't use oxen to plow the land?