Seeing that the young man chose the word "Zhiping" for himself, Li Mao smiled: "Since you are determined to be peaceful, you should cherish the world and remember." ”

Then, he and Lu Zihe glanced at each other, and both of them nodded with satisfaction.

I saw Li Mao smiling and thinking about it again, but he got up and took out a few thick books wrapped in silk and silk from the bookshelf in the study.

Several books are quite old, and they seem to be often read by the owner, and the cracks of the books are full of paper full of small letters.

Xie Xiuqi looked at it, but it was the Far Song Dynasty version of physical chemistry and other books that he had seen in his study.

was in doubt, but heard Li Mao sigh: "This is the teacher's painstaking efforts for nearly ten years, and the notes and annotations in the book are all learned, thought, solved, and doubted by the teacher's reading." Since you have entered Yongfu, you can't follow the side of the teacher and carry your face to life. Therefore, as a teacher, I will grant you these books that inherit the mantle of science as a teacher. ”

"If you don't understand or have spiritual thoughts, you can either write or visit, ask the teacher for advice, and discuss with the teacher. The way of science is not as difficult to learn and refine as the Confucian scriptures, and the foundation is easy to understand. ”

"Therefore, these books are enough to enable you to have a comprehensive understanding and study of the Imperial Sciences, and to choose those who are interested in them to study them deeply. I hope that you will study diligently in addition to your official duties. ”

Xie Xiuqi immediately took the book respectfully.

Finally, I am no longer afraid of accidentally telling things that are ahead of the times in the future...... I was finally relieved.

He was already overjoyed in his heart, and thought with tears in his eyes.

Li Mao looked at Xie Xiuqi's happy expression and nodded slightly.

It seems that this son is ...... for science Still quite interested.

But he would be wrong, and thought with satisfaction in his heart.

Then, he didn't know what he remembered, and he said again: "Your heart is jumping, your thinking is very quick, and you are imaginative. He is more talented and intelligent in the way of science. Fang Cai was quick and witty on the spot, and he retreated from doubt with his clever plan, but it was also a child's play, which was harmless. However, if you are studying academics, you must not have such a playful mentality, and you must be cautious and cautious, so as to study the way of science. ”

He said earnestly.

Xie Xiuqi's face was already a little embarrassed: "You...... You don't blame the disciples...... What's that, the disciples made them embarrassed, and they were even more angry to leave the pearl in your palm......"

He peeked tentatively at Li Mao.

Li Mao smiled: "All the things of the talent are allowed by me, and under the mutual examination, they are all based on real talent." Xi'er has been smart since she was a child, and no one is convinced except your sister Wei'er, and if Wei'er is only in science, she can't be convinced. If one day, you can tell her that there are people outside the world and there is a heaven outside the world, and you will be very happy to be a teacher. ”

"Speaking of which, I have to pay you a compensation for the teacher. Xi'er blocked the apprenticeship today, and even made it difficult for you, and made it difficult for you. Although she is unforgiving, she is a woman after all, and she cannot be expected to have a man's heart. She is unrelenting to you today, and I hope you don't want to be surprised, and let her order in the future. ”

Xie Xiuqi looked at the old man with a white beard and full of expectation, but he suddenly felt a trace of emotion in his heart.

At the beginning, he was indeed sorry for Li Xi, and there was even more secret in it...... In his heart, in fact, he didn't have the slightest disgust with Li Xi's move today - he should have this retribution.

However, it was enough for him to re-record me on the door wall regardless of his previous suspicions, and even such a trivial matter that was not wrong at all, considering my feelings, he had to apologize to me.

A humble gentleman, gentle as jade, a teacher, a watch for eternity. It's the honest old man in front of you......

"Students will live up to the high expectations of their teachers."

Thinking about it, Xie Xiuqi already said solemnly.

Li Mao nodded with satisfaction, and then, he seemed to remember something, and looked at Xie Xiuqi again, his eyes were full of the discussion and inquiry in the Lu Mansion that day: "By the way, Xi'er has created a thing this year, but it is a powerful gunpowder, but its nature is very weird, I don't know if you have any thoughts about it?" ”

Xie Xiuqi frowned, he was very interested in whether Li Xi's creation was bitter acid: "I don't know...... What are the details? The teacher may wish to tell the students in as much detail as possible, otherwise, the students will not know enough to speak falsely. ”

Li Mao nodded: "Speaking of which, it was just an accident, and it was ...... at the time."

He spoke softly.

"You know, the emperor ** Bei, gunpowder is the top priority. Therefore, the empire has been researching formulas to enhance its power. Xi'er concocted such a bunch of strange things at that time, and after studying for several days, she found that she could make dyes at most. So, after she threw it in the bucket where the garbage was stored for a while, she happened to talk to someone about the gunpowder recipe one day. She had a whimsical idea to try mixing the strange thing she had made with gunpowder. The result is ......"

Later, Xi'er prepared a lot of these things. Gradually, I found that this thing was simply extremely strange, and sometimes even if it was added with a knife and axe, or even burned with fire, it would not explode. Sometimes, the slightest heat or even the slightest friction will explode violently......"

Xie Xiuqi couldn't help nodding, and his heart was becoming more and more affirmative, that is, bitter sour.

I have a little understanding of bitter sourness - the Shimose gunpowder made by the Wa Kingdom back then, just a little bit positive, so gank Qing Dynasty made a fortune?

And how to find its interesting story, I was curious about Baidu because of its involvement with the Japanese state, but I still have some impressions.

It is said that in 180s, a dye shop in Paris put picric acid in an iron bucket, and the iron bucket was rusty and could not be opened for too long, so an idiot actually found a hammer to smash the iron bucket, and then ......

Then he was gray with the dye shop.

Picric acid is usually very quiet, but when it encounters metal elements such as iron or lead that are easy to combine with it, it is combined into picric salts such as ferrous picric acid and lead picrate...... Blowing up at every turn is worthy of its name.

However, it seems that concentrated sulfuric acid and nitric acid are used to make picric acid...... Got it now?

It may not be that there will be, even if the Yongzu King can't say the reason theoretically, let alone propose an industrialized large-scale production method, but it is possible to invent a local method for making sulfuric acid and nitric acid.

After all, nitric acid sulfate can almost be called the mother of the chemical industry. People with a modicum of common sense would not have thought of forcibly jumping out of this technology first - even if it was to leave only the local methods that people knew and did not know why.

Xie Xiuqi thought about it, thought about it, and replied: "Teacher, although I am equal to chemistry, at this time, I only know what it is, but I don't know why, but everything always has its inherent characteristics, and it is impossible to go all over the place. If the characteristics change, it must be caused by changes in the external environment, or due to changes in the material itself. Yes, the evening ...... Miss Lee......"

He hesitated, seemingly struggling a little over the title.

Li Mao smiled: "You are older than Xi'er, and you are my personal disciple, now there is no distinction between entry and entry order, just call the little junior sister." ”

Xie Xiuqi nodded: "Yes, the reason why the characteristics of the little junior sister's gunpowder are strange and changeable. According to the students, most of them have had a chemical reaction with something that they came into contact with before, forming a new substance-"

"As you just mentioned, the students noticed a detail: in normal experiments, objects are contained in glass bottles, and this object has always been extremely lazy. And every time the thing is weird, it seems to have been in contact with metal for a long time...... I don't know where the little sister put this thing before she thought of mixing it into the ** experiment? ”

Li Mao was stunned, he thought about it for a while, and he was suddenly moved: "You mean...... During this period, the substance reacted chemically with the metal, and became unstable. ”

Immediately, he suddenly said: "Yes, it is a lead barrel dedicated to holding toxic waste...... The old man had also seen the strange gunpowder unstable once, and it seemed that Xi'er had told him to observe how it changed in contact with the air, and he spread it out in an iron plate for a few days, and then ......"

"So this weirdness is because of this?"

In the end, he was extremely surprised.

Xie Xiuqi smiled: "That's right, the students are also speculating, and they also hope that the teacher will learn from them." ”

After thinking about it, he added: "This thing is made, and I hope that the teacher will definitely tell the little junior sister to protect herself, and it is best to experiment in a ventilated place." ”

Li Mao shook his eyes again, a hint of surprise flashed in his eyes, and he turned to an approving smile: "You don't have to worry about this, His Royal Highness the Ancestor also mentioned back then that when conducting chemical experiments with toxic and dangerous substances, ventilation and clothing are required." Back then, His Royal Highness and his old man invented protective clothing specifically for this purpose. ”

"And the old man later strictly ordered her not to participate in the process of making experiments, so she could only guide others from the side."

Xie Xiuqi nodded: "That's good, and if it's really the student's guess." Then you must not put the prepared gunpowder in contact with the metal for a long time, otherwise, you may have an accident. ”

The little junior sister actually used a lead barrel to hold the object, but fortunately it was not packed for a long time, so the little junior sister chatted with someone about the gunpowder formula, and had a whim. If she had let him stay in the lead barrel longer, she would have thought of experimenting with gunpowder...... I don't know how quickly it binds to the metal, but the longer it goes, the more dangerous it always becomes. ”

Li Mao suddenly gasped.

I saw him hurrying to the door, but he beckoned to a servant to come closer: "Quickly find the little lady!" If she doesn't want to, she will be tied up! Also, in the Chuan Ming County Chemistry Laboratory, it is strictly forbidden to contact Xi'er's gunpowder with any metal before the old man lifts the ban! If there is gunpowder that has been touched, take it with care, detonate it carefully, and destroy it! ”

He commanded sharply.

Then, Li Mao turned around and glanced at Xie Xiuqi deeply: "If this is the case, what Xi'er invented may not be gunpowder, but what you perceive is the real gunpowder-meet, if this is the case, the old man should write to the Wang Academy of Sciences and clarify everything." This patent cannot be monopolized by Xi'er alone. ”

Xie Xiuqi was stunned, but before he could speak, he saw Li Mao and said, "You have really changed...... If you think about this, you will see the subtle knowledge, and your heart will be even more ......"

He didn't say any more, but his expression was full of approval and closeness.

Immediately, he showed a wry smile again: "Xi'er will lose her temper again when she sees that you are still there." In this case, you can go with Lord Lu. I only hope that you will study and study every day, cultivate yourself, live up to your ancestors, and settle the world...... Live up to the name of Xiuqi, the word of Zhiping. ”

His eyebrows were already full of kindness, and he looked at Xie Xiuqi and Yin Yin admonished.

"Yes, the student quits."

Xie Xiuqi immediately gave a deep salute, and with a smile to Li Mao, Lu Zihe said goodbye and exited the study.