Chapter 14 The studious Zuo Ci

Liu Hou, who was bored, ran to the side with a small bamboo pole to practice the marksmanship taught by Zhao Yun. At this time, Zuo Ci and Ge Xuan ran over. During this period, Liu Hou often gave classes to Zuo Ci and Ge Xuan, teaching the basic knowledge of mathematics, physics and chemistry. Zuo Ci used "secret arts" as an excuse to ask Liu Bei to set up a quiet place as a classroom for classes.

Zuo Ci didn't let others listen to the class, and others only thought that Zuo Xianweng taught the little boy the "secret art", but they didn't know that they were learning the "secret art" with Liu Hou.

The knowledge of mathematics, physics and chemistry taught by Liu Hou opened the eyes of Zuo Ci's master and apprentice, knowing that these unheard of knowledge did indeed surpass the world, and he was amazed and convinced of Liu Hou's "immortal" identity.

Zuo Ci's master and apprentice are very studious, and after class, they also seize a qiē time to review and study on their own. often encounters things that I don't understand, so I come to ask Liu Hou. So when he saw them coming, Liu Hou was not surprised. Because there were still many people in the garden, Zuo Ci didn't salute Liu Hou, and asked directly: "Little boy, what kind of immortal art are you practicing?" Can you teach the disciples? ”

"This is not some immortal art, it is General Zilong's marksmanship, you can learn it together if you are interested."

"Uh...... There is a saying that the apprentice does not know whether to ask or not. Zuo Ci looked a little hesitant and a little confused.

"But it's okay to ask, I'll say what I can say, and if it's inconvenient to say, I won't sue you if you ask." Liu Hou is a ghost, and he always leaves a way behind when he speaks.

"The apprentice has a question, why does the master not practice the infinitely powerful immortal method, but instead learns such mundane methods."

Liu Hou thought to himself, "Yo, does this guy suspect my identity as an immortal?" Look how I fool you to the end. He rolled his eyes and counted on his mind.

"This matter involves Tiantiao, and I shouldn't have said more to you, but I think that you are my disciples and grandchildren, and it is not bad to be good recently, so I will make an exception to tell you, but you must remember that you can't tell anyone else."

"Disciples/grandchildren obey." Zuo Ci's master and apprentice hugged their fists together and agreed.

"I was degraded to the mortal dust, entrusted to be born in this mortal body of the flesh, not to mention those great magical powers that move mountains and seas, even a small spell can't be used, I am now completely lost in mana."

"Why!" Zuo Ci and Ge Xuan were shocked and asked in unison. They are all anxious in their hearts, without mana, what else do you use to unify the world and stabilize the people?

"This is not only limited by heaven, but also to protect my own safety. There is a rule in the heavens that immortals are not allowed to use spells after descending to earth, so as not to shock the world or accidentally injure living beings. ”

After a pause, Liu Hou said again: "As for my own safety, I can't use spells. Think about it, but all immortal arts must require a strong energy output, do you understand the energy? Or to put it another way, mana. ”

"I know, the master just said a few days ago that energy is the ability of matter to do work." The studious Zuo Ci rushed to answer.

"Energy is conserved." Ge Xuan added.

"That's right, you can see mana as a form of energy, you look at my current physical body, it's just a weak mortal body, can it withstand the impact of powerful energy? You think, if I send a pyrotechnic, will this fire burn me to death first? Join me to send a lightning spell, will it scorch me first? ”

"Oh, I see!" Zuo Ci seemed to understand, and there seemed to be something wrong, but he couldn't tell what was wrong, so he had to agree first.

"I know, energy is conserved, energy will not disappear, it will only be transferred from one object to another, the process of sending out immortal magic is the process of transferring energy from the body of the immortal to the external environment, if the body is too weak to bear, in the process of this energy transfer, the body will be damaged." Ge Xuan had an idea, thinking that he had thought of the key point.

"Hehe, Xiao Ge Xuan is really smart, it's quite good to think of this." Liu Hou secretly breathed a sigh of relief, and said in his heart, it's so dangerous. If Ge Xuan hadn't thought he had thought of the answer, and if he continued to ask Zuo Ci like this, he wouldn't know how to answer it. The more I make it up, the more outrageous it becomes, and I don't know how to continue making it up. It seems that it would be better to talk less about these god-like things in the future.

"Anyway, as long as you know that any immortal magic and spell can't be used, and it's useless, you shouldn't think in this direction. We can only use mortal means, as well as my insight and knowledge beyond this age, and the things that have been created from this knowledge. You don't have to worry, even if you only have these means, it will not be difficult to unify the world and stabilize the people. In a while, I'll teach you to make something useful. ”

"But please ask the master/master to command." Zuo Ci's two masters and apprentices replied in unison.

The two things Liu Hou wants to make most at the moment are soap and straw paper. The most difficult materials to work on are lime and alkali, which I couldn't do with a child before, but now that I have two helpers, it's time to start implementing it. At that moment, Liu Hou carefully explained to Zuo Ci's master and apprentice the manufacturing methods of these two things and the raw materials they needed. Tell them to squeeze some time out and start collecting raw materials for this.

Zuo Ci's master and apprentice have many years of experience in alchemy and have a certain understanding of ores, and it is not an exaggeration to say that they are one of the top mineral experts and chemists in the world. The important process of making paper and soap requires boiling some materials, and they are also familiar with making fire to refine them, plus the physical and chemical knowledge that Liu Hou instilled in them during this time, the manufacturing process of these two things is not too complicated, and they quickly remember it.

Liu Hou is a standard hand-shaker character, and he doesn't care about it after explaining things to them, as for how to prepare raw materials in the future, how to build equipment for trial production, and how to finally succeed after countless failed tests, he is unwilling to care. Anyway, the two younger brothers are crazy people who are learning and actualizing, so let them toss it.

"Oh, by the way, I learned Zhao Yun's martial arts, and the purpose was more to strengthen my body. The flesh of mortals can only be exercised with the exercises of mortals. Zuo Ci, you have studied the Tao for many years, do you have any exercises that can strengthen your body? Could it be a five-bird drama or something? Liu Hou decided to dig deep into Zuo Ci's residual value to see what good things he still hid.

"Back to the master, I have also heard a little about the five poultry operas, which are said to have the effect of stretching muscles and bones, smoothing the meridians, and prolonging life. However, the Five Fowl Opera was created by Hua Tuo, but I can't. Zuo Ci blushed a little, and then said:

"However, I got a suite of Chinese techniques from ancient books, and after years of research, it is quite effective, so I will teach it to the master and cultivate this furnace ding. Over time, the effect will not be worse than that of the five birds. ”

"Uh, the ...... in the room" Liu Hou almost didn't squirt out, it turned out that this old way was a fake seriousness, I didn't see it. Nima, how old am I now, you can pass on my intercourse technique, even if I learn how to use it? You're in mind, aren't you? Isn't this scolding the bald donkey in front of the monk? Are you deliberately making fun of me, my little jiji is as small as a bean sprout, and it's useless to see it?

"Ahem, don't use it for the time being, this, let's talk about it later." Liu Hou gritted his teeth and said.

"The apprentice's middle school technique in this suite is really miraculous, it can keep the face ageless, light and healthy, ......"

"Okay, okay, don't talk nonsense, come over today, if there's anything important, let's get down to business first." Liu Hou had to interrupt his ramblings.

"That's right, there are a few things that I don't really understand about this redox reaction apprentice...... "It turns out that Zuo Ci is here to ask for homework, and he actually said so many digressions first. Liu Hou was very satisfied with his studious attitude, and naturally gave a detailed answer to their master and apprentice.

During this time, Liu Hou gave classes to Zuo Ci and Ge Xuan when he had free time, mainly teaching mathematics, physics and chemistry, and occasionally mixed with some knowledge of world geography and natural science. Anyway, it's just a matter of grabbing, and what to talk about.

Probably because of his previous experience in alchemy, Zuo Ci's interest in chemistry is obviously much greater than that of other disciplines. After listening to Liu Hou's chemistry class, his eyes suddenly brightened, and many of the problems encountered in alchemy before were easily solved.

He finally knew why these materials were mixed together to produce such a product, and why the other materials exploded when they were mixed together. These courses gave him an unprecedented experience, making him feel as if he saw a broad road to the "Tao".

No, while learning a lot of chemistry basics, he recently started to learn about redox reactions.

Redox reactions are a large class of chemical reactions, and such reactions occupy a very important position in industrial production. So Liu Hou took the trouble to explain the relevant knowledge to him, although he had left school for many years, he still remembered very little, but he still racked his brains to squeeze out the things in his memory bit by bit.

"Redox reactions all obey the law of conservation of charge. In redox reactions, oxidation and reduction must be carried out in equal quantities at the same time. The two can be likened to the relationship between yin and yang that is interdependent, transformed, ebb and flow, and oppositional to each other. ”

Liu Hou used the theory of the mutual transformation of yin and yang as an analogy, which was of great help to Zuo Ci's understanding, after all, people have been dealing with the theory of yin and yang all their lives. Sure enough, as soon as he said this, Zuo Ci understood, nodded his head violently like a chicken pecking rice, and at the same time picked up a brush and recorded on a roll of bamboo slips.

Taking notes is required by Liu Hou, he asked Zuo Ci and his apprentices to write down all the knowledge they talked about whether they understand it or not, and then write it down, and then take it out and see it after they don't understand, and slowly experience it, even if they understand, they can also be used to review and consolidate their memories later, which is a good study habit.

At the same time, Liu Hou is also afraid that he will forget these things after a long time, and after they write them down, even if he really forgets them in the future, he can take their notes and look at them to reawaken his memory.

However, seeing that Zuo Ci was recorded with bamboo slips, Liu Hou felt a deep sense of frustration. There was already paper in this era, more than 100 years after Cai Lun invented paper, and it is said that there was actually paper before Cai Lun, and Cai Lun just improved the method of making zuò, so that the quality of paper is better and the cost is lower. However, Liu Hou can't afford to use paper!

Liu Hou, who has always regarded himself as "tall, rich, and handsome", found that he did not touch any of these three words. Needless to say, "high" is needless to say, he is still a young child, three inches nailed, whether he is handsome or not, at least he has not heard a woman praise him for being handsome.

The most terrible thing is that as the son of Liu Bei, one of the three heroes, he can't even buy a piece of paper for his subordinates, which shows that the word "rich" is far from himself.

The paper of this era is indeed very expensive, especially the so-called Caihou paper, which only the powerful can afford. And it will never be used in other places other than writing important essays and letters, such as Liu Hou's obsessed wiping of his buttocks, which is definitely a hateful thing.

If it were known that Liu Hou wanted to wipe his butt with paper, he would definitely be regarded as a typical representative of arrogance, lasciviousness, extravagance and waste, and would be nailed to the pillar of shame by the moral guardian and whipped for a thousand years and a thousand years.