Li Shimin's will: Li Zhi, the throne belongs to your brother

Wei Zheng was very confused, he couldn't understand what Li Tai was trying to do with this operation.

Is it so easy to recruit students in science? ? ?

And Yang Siqi and Zhang Yajiu's skin twitched even more, feeling that Scientology's acceptance of disciples was a bit too casual.

Soon, Li Chunfeng not only brought Yuan Keshi here.

In addition to Master Yuan Ke, he also brought a person who looked like Li Chunfeng.

"This is?" Li Tai looked at Li Chunfeng in confusion.

"The disciple has already brought Master Yuan Ke, this is Quan Zi." Li Chunfeng said modestly: "Qui Zi has no skills, and I hope the master can accept him as a disciple."

Li Chunfeng also pulled his son into the Academy of Sciences, which was unexpected by Li Tai, should he be accepted?

Because of Li Chunfeng's halo, Li Yan didn't even have too many records in the history books, and Li Tai didn't know anything about his achievements.

But I feel that Li Yan should not be sent there, after all, he has such a powerful father.

Thinking of this, Li Tai nodded and said, "Okay, starting today, you will be the fourth disciple of the teacher, and you will assist your father in running the School of Chemistry from now on."

Li Chunfeng smiled all over his face: "Thank you, master." After speaking, his eyes signaled Li Yan to salute quickly.

And Li Yan hurriedly knelt down and served tea with both hands: "Disciple pays homage to master!!"

"Please get up." Li Tai said, taking a sip of tea.

Seeing this scene, Master Yuan Ke was at a loss. Shouldn't he be the one who apprenticed to the teacher?

And Li Chunfeng next to him showed something wildly in his eyes.

Although it is very puzzling, it is much better to be a disciple under Li Tai's acceptance than facing the ancestral tablet every day.

Thinking of this, Master Yuan Ke followed suit and began to serve tea to his teacher.

Li Tai nodded and said to Yuan Keshi.

"Okay, today you are the fifth disciple of the teacher, and you will be in charge of the Mathematics Academy from now on."

"The disciple thanked the master." Master Yuan Ke got up and said.

Glancing at the few people in front of him, he immediately had five disciples.

Li Chunfeng and Li Yan are in charge of the School of Chemistry, Yang Siqi and Zhang Yajiu are in charge of the School of Physics, Yuan Keshi is in charge of the School of Mathematics, and the three schools are complete.

As for manpower, let them divide it themselves, after all, the three courtyards complement each other.

Seeing this, Li Tai nodded with great satisfaction and exhorted.

"Good science only needs to be respected in the heart, without too many rituals, it needs to constantly seek knowledge, verify, and experiment.

There is no family background, but there are national boundaries, and you must not reveal half a word to the barbarians. "

"Disciple would like to obey the master's order." The five people replied in unison.

"From now on, all senior brothers must unite with each other. The other senior brothers told you back, and the banquet is now open."

······

After the banquet, Li Tai called the five people to a side room.

Li Tai glanced over, and several people had different eyes.

They knew that Li Tai was going to pass on knowledge.

In the expectant and excited eyes of everyone, Li Tai took out a few books and said to everyone.

"This is "Physics", "Chemistry" and "Mathematics", three very important books in science, and I will pass them on to you today."

"Thank you, master!" Li Chunfeng was eager to see through, and hurried forward to grab two copies.

Although the rest of the people didn't know why Li Chunfeng was so excited, they got three copies one by one.

"Cough." Seeing that all five people got it, Li Tai coughed and said.

"Father asked me to study cannons before.

Except for Zhang Yajiu and Yang Siqi, everyone looked at each other in blank dismay, not understanding what a cannon was.

"This matter is related to Jiangshan Sheji. The specific Zhang Yajiu and Yang Siqi know about it. You can ask later."

Several people looked at the two of them, and some understood why they were accepted.

"Today's apprenticeship is a bit crude and hasty, and the purpose is also for the cannon, so don't be offended."

"Now assign artillery-related tasks to the division.

Li Chunfeng led a group of students from the School of Chemistry to the blast furnace base, specializing in the development of gunpowder. As for the matter of the palace, he left it to Li Yan to handle it personally. "

Li Chunfeng and Li Yan looked at each other and replied in unison: "Yes!!"

"Zhang Yajiu led the craftsmen to study the cannon, and Yang Siqi studied the steam engine. As for the steam engine, it exists physically."

Hearing Li Tai's assignment, the two replied in unison: "Yes!"

"As for, Master Yuan Ke will assist in the research of the cannon!!" Li Tai looked at Master Yuan Ke and said.

"Yes!" Yuan Keshi, who felt that he was not taken seriously, replied a little aggrieved.

"Well, the task of the cannon and the steam engine is entrusted to you. You must overcome difficulties and obstacles. Feel free to ask for money and food." Li Tai urged.

"This disciple will definitely live up to His Highness's expectations!!" The five replied in unison.

"If you have nothing else to do, let's go down there!" Li Tai waved his hand and said.

"Disciple leave!!"

Watching the five people go away, Li Tai heaved a sigh of relief and placed great hopes on them.

Except for Li Yan, these people are all the top talents in Datang.

Adding one hundred Taoists and more than 100 craftsmen, there are more than 200 people studying cannons.

This may not be a big deal now, but it is already a lot in this Tang Dynasty.

After all, during the Zhenguan period, there were only 640 civil servants at the least, and there were only 7000 in the whole country.

Hope they can give themselves a big surprise.

Just as Li Tai breathed a sigh of relief, Li Chunfeng led Li Yan back, took out two boxes from his sleeve and said.

"The disciple has lived up to His Highness's expectations and has already made the toothpaste."

"Oh, let me have a look!!" Li Tai was very pleasantly surprised when he heard it, and finally he didn't have to bite the willow branches anymore.

He opened the box, and by candlelight, Li Tai saw a box of green tooth powder... He was a little disappointed immediately, it was very different from the toothpaste in his impression.

"Why is this so green, what did you add?"

Li Chunfeng explained: "The toothpaste made first is milky white and tasteless, like fine stone powder.

The disciple thought about grinding the tea leaves into powder and adding them together, and the taste was much better. "

"Tea?" Li Tai put some on the tip of his tongue, and it really smelled like tea.

"In addition to tea, my disciples still use many kinds, such as mint, salt, pepper...the effect is not the same."

With pepper? ? ?That can't be spicy?What kind of dark thought is this?Li Tai was speechless.

Li Chunfeng took out a bamboo toothbrush and said, "Just put horsetail hair or pig brown hair on the bamboo, and put tooth powder on it to clean your teeth."

"Good stuff!!" Li Tai looked at this toothbrush, which looked very close to a modern toothbrush.

In the Central Plains, teeth are usually cleaned with salt, biting willow branches or rubbing with a cloth.

But in Rome and Greece, animal bones were used as toothbrushes, and ashes were used as toothpaste for cleaning. The taste must be very special.

Chapter 99 Essence

"What about this box?" Li Tai asked.

"This box is amazing, please look at it, Your Highness."

Li Chunfeng slowly opened the box and lifted several layers of cloth, and suddenly a strong smell of urine came out.

Li Tai quickly covered his nose, and squinted at this thing, only to see that this thing in the glass bottle was shining with blue-green light.

"This is the essence of boy urine!!" Li Chunfeng said confidently and proudly.

"The... essence in the boy's urine???"

Genius idea! !

Li Tai's whole body is not well, and the corner of his mouth keeps twitching, no wonder the smell is so strong.

Li Chunfeng talked about his thoughts: "The disciple wanted to make fertilizer at the beginning, but failed many times after experimenting.

So the disciple thought that excrement and urine can fertilize the fields, and collecting the urine and evaporating it can extract the essence of the urine! ! "

"The results of it?"

"The disciple discovered this kind of thing. After the disciple's test, it seems to be phosphorus!!!"

"Phosphorus?" Li Tai felt a little inconceivable about this. Phosphorus was left after evaporating a lot of urine? ? ?

(In 1669, an alchemist tried to evaporate urine to make the 'Philosopher's Stone' but ended up with white phosphorus.

In fact, there are many components in urine, but the phosphate contained in urine will react with carbon to form carbon monoxide and gaseous phosphorus, and white phosphorus will appear after condensation.

Phosphates are used to clean clothes, and some types of laundry contain phosphates.

Ancient Romans had a tax called pee tax, they used urine to clean clothes and teeth.

Because urine is easier to obtain and cheaper than animal ashes, the pee tax was thought of in order to make up for the financial shortfall.

This is outrageous, but the lack of phosphorus in the human body will cause muscle weakness and bone pain. Therefore, "Compendium of Materia Medica" records a method of treating diseases by boiling eggs with urine from children. )

"Not bad..." Li Tai looked at Li Chunfeng speechlessly: "It's not bad!!"

It's really a genius idea. Although it's a bit disgusting, it's really fertilizer.

It is not completely successful, but it is not far from success. After all, phosphorus has been extracted, and it is not far from obtaining phosphorus fertilizer.

"That's right, keep going!" Li Tai praised with a forced smile.

"Thank you, master, for your compliment." Li Chunfeng was immediately very happy.

"You can keep the method of toothpaste, it will be useful to the teacher at that time.

As for the refining of phosphorus, let's keep it for now, try more to see if you can get a better refining method, and try a few more.

Also, be aware of your own safety. "

Extracting phosphorus from urine is a good method, but the efficiency is too low...and boiling urine to spread...is not good.

"Anything else?" Li Tai asked, seeing that Li Chunfeng hadn't left.

"Your Highness, please take care of me more." Li Chunfeng saluted and said to Li Tai.

Li Tai said with a smile on his face: "Don't worry, they are all disciples of this king, and this king will not treat everyone badly."

It turned out to be for this matter!

"Disciple resigns." Seeing Li Tai's quick agreement, Li Chunfeng said to Li.

"Yeah." Li Tai couldn't help laughing when he watched Li Chunfeng retreat.

This Li Chunfeng is really a clever ghost, and he specially brought Li Yan to him, but his ability is beyond doubt, and the tooth powder was made.

It would be great if the perfume is being made.

In this way, tooth powder can be used as a commoner, and glass is invincible when it is paired with perfume and oil as a luxury.

······

The next day, the five of them waited for Li Tai in the front hall with dark circles under their eyes overnight.

They stayed up all night to watch part of it. Although they couldn't finish it all, they felt that the world had changed, such as the round sky...

For a moment, there were countless questions in their minds, eager to ask Li Tai.

On the other side, Li Tai deliberately lay on the bed, being urged by Yan Wan.

He didn't want to wake up at all, mainly because he didn't want to see the five apprentices.

I was chased and questioned by Li Chunfeng alone for several days before...it was really annoying.