The heavens start from saving Daming Chapter 741: Learn mathematics, physics and chemistry well, and you will not be afraid of traveling around the world
Chapter 741: Learn mathematics, physics and chemistry well, and you will not be afraid of traveling around the world
"Is it easy to break mountains and rubble?"
"Sweeping across thousands of armies and invincible?"
After reading Li Yunze's letter, Ying Zheng, who had always had full confidence in Li Yunze, was also full of doubts: "What is so powerful?"
Naturally, the messenger didn't know, so he could only see for himself.
With the famine and locust plague in mind, Ying Zheng decided to go and have a look after some hesitation.
Arriving at the general supervisor who was located in the mountains, he saw that Li Yunze had not even exchanged a few words before he was led by him on horseback to a ravine more than ten miles away.
The accompanying palace guards looked nervous, and went up the mountain and into the ditch to search all the places where people could hide.
There is no way, it is too dangerous in this environment.
"I'll show you something nice."
The slightly mysterious Li Yunze led Ying Zheng to a covered cart.
When the leather is lifted, what is exposed is a large piece of something similar to a large brick wrapped in oil paper.
He picked up a piece and looked at it for a while, then threw it in his hand. Ying Zheng asked in confusion, "What is this?"
"Gunpowder, black powder."
Li Yunze signaled the Mohist disciples who were following them to take the gunpowder bricks to the foot of the mountain hundreds of steps away, install fuses to connect them, and stuff them into a hole dug in advance.
He pulled Ying Zheng behind a wall in the distance and waited for the fire to be lit there.
"Master."
Ying Zheng was a little anxious, "Recently, there has been an endless famine in the country, and a large number of locusts have flown in, causing a locust plague. I am very busy with affairs..."
"It's very fast. It'll be fine in a moment."
Li Yunze waved his hand and motioned Ying Zheng to look towards the cave in the distance.
In desperation, Ying Zheng had no choice but to gather his thoughts and look over there seriously.
After a short while, I saw the Mohist disciples who had been carrying bricks running back in a hurry. They were running so fast, as if there were some demons and monsters chasing behind them.
Just as Ying Zheng was about to ask what this mysterious thing was doing, he saw it suddenly light up hundreds of steps away.
The bright light was so dazzling that he subconsciously closed his eyes.
What followed immediately was the sound of roaring thunder!
This movement really scared Ying Zheng to the point of trembling.
I have never seen such a scene or even imagined it, so it is natural for me to be frightened.
Fortunately, Li Yunze supported him and called to the stunned palace guards around him to come over with shields to cover Ying Zheng's head.
In a short time, all kinds of debris, including gravel, vitrified soil, vegetation residue, etc., fell like raindrops, and the sound of hitting the shield was continuous.
Ying Zheng came back to his senses and looked into the distance through the wall.
There was still a fire over there, and thick smoke was billowing into the sky.
"This, this, this..." Ying Zheng, who was deeply shocked by the power of technology, asked tremblingly, "What is this?"
"As I said, black powder."
After patting the dirt on his body, Li Yunze pulled Ying Zheng over there, explaining as he walked.
When the dizzy Ying Zheng arrived at the scene, he saw that the previous cave had been completely transformed into a huge pit, with radiating traces all around, and the fire was still burning, and his emotions were also the same.
From panic to ecstasy.
"Taifu, can this thing be used to attack the city?"
"It was made to attack cities."
The disputes between countries during the Warring States Period were different from the foreign wars during the unification period.
During the Han and Tang Dynasties, foreign wars were basically field battles, which tested the commander's strength, equipment, skills and tactics.
During the Warring States Period, field battles were naturally important. Battles such as the Battle of Changping could be said to determine the fate of the country.
But the only way to truly conquer a country is through siege warfare.
The level of city building in this era was already very high, and the city defenses were strong and difficult to conquer.
It often happens that a city is besieged for a long time but cannot be defeated.
In the end, they had to retreat due to the arrival of reinforcements or lack of food supply.
Therefore, siege warfare was an extremely important matter in this era.
In order to be able to break the city, every method was considered, and all kinds of siege equipment were gradually invented.
But compared to black powder, its power is completely incomparable.
"With this magical object, it is not far away that Qin will dominate the world~~~"
Ying Zheng, whose beard had begun to sprout from the corners of his mouth, looked up to the sky and laughed endlessly.
After finally calming down, he saluted Li Yunze respectfully, "The master has made great contributions to the Qin Dynasty. I would like to worship the master as the prime minister!"
In Da Qin, the highest position that an outsider can hold is the prime minister.
Whether it is Zhang Yi or Fan Ju, or Shang Yang, Lu Buwei, etc., this is the highest condition for Da Qin to win over outsiders.
"The prime minister has been abolished, so there is no need to re-install it."
Li Yunze was naturally not interested in any of this. He waved his hand and said, "Your Majesty is currently busy with state affairs, but he has even neglected his studies. How long has it been since you came to study with me?"
Ying Zheng showed a bright look on his face and saluted repeatedly, "What the Master teaches is that as long as you have time, you must come to the Master and learn from it."
After asking about the confidentiality process, he ordered a battalion of soldiers to be dispatched to guard the secret, determined not to let the secret of black powder spread to Kanto.
After finishing all this, Ying Zheng said to Li Yunze, "Master, there have been constant natural disasters in the past two years, and the people have been displaced and have no food or clothing..."
"Then go and grab it."
Ying Zheng smiled bitterly, "There is a shortage of food in the army, so it is difficult for the army to dispatch. Moreover, the countries in the Kanto region don't have any extra food. Even if they grab some, they will have to be consumed on the road."
"You."
Li Yunze nodded and Ying Zheng said, "Thankfully the globe is still there with you. The east is not bright and the west is bright. If you can't get food in the east, then go to the west to get cattle and sheep."
Ying Zheng said this thoughtfully, "I wonder how powerful the Yuezhi is."
"It's useless to talk about such things."
Li Yunze raised his chin and said, "How effective you are in combat, you won't know until you fight."
This chapter is not over yet, please click on the next page to continue reading! "Let's do this." Li Yunze asked, "First arrange for people to go to the grassland to grab cattle and sheep, and I will also think of some ways to increase food production here."
Hearing this, Ying Zheng was overjoyed and bowed to the end, "Thank you so much, Master!"
After returning to Xianyang City, Ying Zheng began to make arrangements for sending troops.
Everyone thought they were going to take advantage of Wei Wuji's illness and death to attack Wei and beat South Korea at the same time. Everyone took the lead and wanted to be a general in charge of the army.
But the result is that we have to go to the west to fight against the Yueshi.
That's a place I've never heard of.
Fortunately, there was a precedent for developing the Hexi Corridor before, so there was no objection.
After arranging these things, Ying Zheng fulfilled his promise and rode off to find Li Yunze for lessons.
Li Yunze did not teach him the art of the emperor, nor did he ask him to cultivate his character and become a good person with all-round development of moral, intellectual, physical, artistic and physical skills.
He just kept teaching Ying Zheng scientific knowledge.
From mathematics, to physics, to chemistry.
They all start from the basics, from simple to difficult.
Learning mathematics, physics and chemistry is very boring, at least Ying Zheng found it very boring.
But when Li Yunze said that the black powder was made by relying on the knowledge of mathematics, physics and chemistry, Ying Zheng gave up his irritability and started studying seriously.
And in order to ensure that the knowledge would not be leaked, the eunuchs were not even allowed to stay with them during classes.
"Master, what is this?"
That day, when Li Yunze was fiddling with assembling a Quyuan plow, Ying Zheng came over to look at it and asked curiously.
"A curved shaft plow is used for plowing the land."
Assembling the curved plow with his own hands, Li Yunze raised his hand to touch the non-existent sweat on his forehead. Li Yunze responded, "The effectiveness of plowing the land is at least several times better than the straight plow used today."
Straight plows are very rare these days. Farmers are usually shirtless in the sun, wielding wooden hoes to hoe the earth.
The reason why the Quyuan plow was invented was mainly because the Qin State obtained a large number of cattle.
Ying Zheng walked around Quyuli and immediately called out, "Zhao Gao!"
A eunuch hurried in and saluted, "Your Majesty."
"Ask someone to come in and carry this outside to find a piece of farmland." Ying Zheng pointed at the Quyuan plow and said, "Take another cow over there."
"Hi~~~" Zhao Gao didn't dare to neglect and hurriedly set off to do things.
Li Yunze looked at Zhao Gao's hurried away figure, but didn't say much.
He took Ying Zheng out and said, "This is the icing on the cake. What really has a huge effect on increasing grain production is sufficient water conservancy and fertilizer."
As for one of the three major elements, he did not mention improved seeds. People these days also know how to make improved seeds from grains that look good and have plump grains.
"In terms of water conservancy, have you seen the construction of canals presided over by Zheng Guo?"
"So that Taifu will know."
Ying Zheng responded with a smile, "I have already been there and measured it using Professor Taifu's knowledge."
Li Yunze nodded, but he did not follow Ying Zheng's instructions and ask about the measurement results. Instead, he changed the topic to fertilizer.
"Chemical fertilizers mainly use chemical knowledge." Li Yunze imparted knowledge. "You already know about planting rotation and retting. The so-called potash fertilizer lies in the content of potassium oxide. It is difficult to prepare this stuff, but it is available in the Western Regions.
Natural potassium salt mines can be used to refine potassium salt using local methods."
Having said this, Li Yunze took out a book from his sleeve and handed it over, "This is the flotation method for refining potassium salt ore. You should learn it carefully. You will take the test next time."
"Hi."
Ying Zheng solemnly put the book in his arms.
"After we capture the Western Region, those salt mines will belong to Great Qin."
"Don't worry, Master."
Ying Zheng, whose eyes were full of confidence, immediately responded, "The Western Region will be the Western Region of Great Qin!"
"It's good to have such ambitions."
Li Yunze admired, and then turned the topic back to fertilizer.
"Phosphate fertilizer is difficult to produce chemically, mainly because Daqin's current technological level is too low."
"If it's natural, it would have to be the bones of fish, shrimp, birds and animals, ground into powder. But Qin doesn't have that much bone meal, so if you want it, you have to go to sea."
"Going to sea?"
"That's right, go to sea. There are many islands in the sea where seabirds gather. The guano they accumulate year after year is the best phosphate fertilizer, and the quantity is sufficient."
"Bird, bird droppings?" Ying Zheng paused unexpectedly. He had never thought that bird droppings could have such a use.
"The world is so big that nothing is trash."
Smiling and carrying Ying Zheng out, Li Yunze told him sincerely, "This is the power of chemistry. Listen to the master's advice, learn mathematics, physics and chemistry well, and you will not be afraid of traveling all over the world!"