"Arithmetic is something that is indispensable in the world, both public and private."
"There are degrees, square roots, and geometry in arithmetic. Xu Gongguang began to write and read "Elements of Geometry", so that our country and our people can learn it and learn about it. For example, measuring acres, building bridges, and operating artillery can all benefit a lot. Today
, we began to study the first volume of "Elements of Geometry", which is about triangles and has a total of forty-eight questions."
At around o'clock that day, Gu Shouqian came to deliver pens, ink, paper and inkstones to Shoukuan School on behalf of Mrs. Miao. He passed by the classroom where the teacher was teaching arithmetic.
He stood and listened for a while. When he turned around, he saw Wang Yuesheng and Zhang Dai coming side by side.
Zhang Dai bowed his hands in salute and asked: "The Traveling Immortal also likes geometry in arithmetic?"
Gu Shouqian said: "I was not very interested at first, but this year I was ordered by Mr. Sun to draw some French drawings of guns and artillery, and then I realized that the cannon must be measured with a gun gauge plate, otherwise the iron bullet will miss the target. And this method also
It’s related to geometry, so I’ll listen to it.”
Wang Yuesheng added with a smile: "Gu Gongzi's brushwork is amazing and he can simplify the complex. Not only the artilleryman who has studied geometry, but also the craftsmen and I can understand the French diagrams at least seventy-eight points."
Wang Yuesheng's praise was definitely not meant as a courtesy.
At the beginning of the year, after Zheng Haizhu went to Chongming to reclaim wasteland, Miao Ruiyun told Wang Yuesheng to write down and graphically describe the casting and operation of firearms as soon as possible, form a booklet like the Ministry of Industry's construction procedures, and hand it over to Liu Shimin in the north and Zheng Yi in the south.
Wang Yuesheng suddenly thought about it and suggested that Mr. Gu, the grandson of Grandma, was a ready-made master of painting. Sun Yuanhua was also inspired by his teacher Xu Guangqi to write a book about the smelting and operation of artillery like "Elements of Geometry"
.If Gu Shou was allowed to sneak into the artillery factory and assist Sun Yuan in writing the book, it would not arouse suspicion. It would be better than a woman who is in charge of people and money wandering around among the factories and workshops.
Now that two months have passed, Gu Shouqian's progress is indeed not slow. Wang Yuesheng only waited for him to finish all the manuscripts, and then told Sun Yuanhua and Zheng Haizhu that the matter involved military aircraft, and that he would personally publish it and take the opportunity to publish a few copies.
At this moment, Gu Shouqian didn't know that there was such a deep meaning in Miss Wang's bright smile. He felt that although the beautiful couple in front of him could not stay together openly and openly in the mansion, they were lovers, so how could they live together day and night?
Wonderful realm.
Only Zhang Dai took the initiative to invite: "Brother Lu Xian, I have found some ancient fir boards from Shanyin. Brother, would you like to go and have a look and give me some advice?"
The wood for the qin was made of fir, and the base was made of catalpa wood. As a scholar and gentleman like Gu Shouqian, he was not inferior to Zhang and Wang in the elegance of the qin, so he went with him happily.
Arriving at the courtyard of Qinfang, monk Yonghai, who stayed at Shoukuan School to teach Japanese, was happily caressing some cedar boards.
After living in Daming for almost a year, Yonghai's Chinese improved by leaps and bounds, and he was able to express compliments to Zhang Dai fluently.
Gu Shouqian looked at the growth rings on the wooden board and listened to Zhang Dai and Yonghai's narration.
Although Zhang Dai speaks modestly and calmly, when he talks about the particularities of sound transmission on the piano board, he always starts with "Mr. Wang said it", which shows that he regards Wang Yuesheng's preferences as a top priority.
Gu Shouqian listened and had an idea in his mind.
Returning to Wenzhe Garden, he called to the boy: "Go to the shack near Jiuliwan, Sijing, and find Blacksmith Du who sent me back that day. Take a look at his shop. If it is open, ask him to make fifty logs.
The cotton seeds are milled and then hundreds of needle blanks are made.”
Mrs. Gu's mother, Mrs. Lu, was pruning hibiscus at the side. She turned around and asked her son with a hint of joy as she searched, "Are you going to send some farm tools to Miss Ximeng and Miss Zheng?"
Gu Shouqian rarely showed a knowing smile in many days, and nodded: "I heard Ximeng said that iron rollers are better than wooden rollers for rolling kapok. Miss Zheng has to support so many refugees, and money will be tight in recent years, so we will give her a gift
A few iron rollers. As for the needle blanks, I heard about a unique secret method of frying needles from Atai, and I’m just about to try it.”
What Gu Shouqian called "needle frying" was a necessary step for people at that time to make embroidery needles.
After the iron wire is cut and the needle holes are cut out, it is fried in a pot over low heat, and then steamed with pine wood chips mixed with fine soil. Different embroidery studios use different cooking and steaming methods, and the materials used are different, and they are all made according to their own embroidery skills
Acupuncture, the habit of acupuncture.
The mother, Mrs. Lu, heard that her son wanted to make needlework for her daughter-in-law, and her face was full of longing. She couldn't help but feel happy. She slowly echoed: "Ximeng is the most picky about needles. If you make a suitable set of embroidery needles for her, she will definitely know how to do it."
Huanxi. Ah Qian, my mother felt that Ximeng had a good eye for people. That Yin family liked to be in the limelight and made friends with all kinds of cats and dogs. The few evil businessmen she attracted this time were just like bandits and robbers.
"
Gu Shouqian listened quietly.
The day after the attack, he went to Songjiang Prefecture to file a complaint. Huang Zunsu went to the Shandong Chamber of Commerce to pick up the people in person. The three evil businessmen had already run away. Gu Shouqian gave up because of the face of his teacher Dong Qichang, but he also had the same thoughts as his mother in his heart.
Similarly, Han Ximeng's reluctance to associate with the Yin family seems to be quite reasonable now.
I heard Mrs. Lu calling to the boy who was going to do something, and then asked Gu Shouqian: "Does the blacksmith who saved you have any female relatives at home? I will give him a few sets of clothes and handkerchiefs and take them with him."
Gu Shouqian said: "For foreign craftsmen, even if they have a good heart, I'm afraid they will be mixed with good and bad among the fellow villagers around them. Mother, my family does not need to act like relatives. My son has given him some money to earn, even if he has thanked him for his kindness.
It’s a saving grace.”
Lu thought it made sense, so she gave up.
More than half an hour later, the young man came back and reported to Gu Shouqian: "Master, the furnace at Blacksmith Du's place has started burning. The young man gave him the deposit, and he was very happy."
Gu Shouqian was writing notes on the pictures of hawks, large blunderbuss, four-pound cannons and other firearms. He didn't even raise his head and said lightly, "I understand."
…
Chongming Island, Zhengjiazhuang.
Three months later, the second batch of about fifty Liao residents was sent over by Xu San on a cargo ship from Haoming Trading Company.
Accompanying Xu San on this trip was a young mother—Aya.
This member of the Yehe tribe who had been abused by both the Jurchens and the Han in Jianzhou was initially taken in by Zheng Haizhu and followed her to Hetuala to participate in espionage training. It was as if he had been given a new life.
After Aya gave birth to her child in Liaoyang and rested for a year, Wu Bondang arranged for her to assist Mu Zaohua at the Yanzhou Intelligence Station.
This time, Aya took her children with her and boarded Xu San's ship from Dengzhou to Chongming Island to report to Zheng Haizhu the situation of the Wangfu Coal Mine and to pay the dividends from the coal mine shares distributed by His Highness Zhu Yi to Zheng Haizhu.
.
Zheng Haizhu specifically asked about the pumping of water from Yanzhou Coal Mine.
After all, the invention of the spinning jenny and the steam engine were actions that travelers who came to the Age of Discovery would definitely think of.
The invention of the steam engine came from the need to pump water from coal mines.
Zheng Haizhu was not an engineer in his previous life, and he did not have the standard golden fingers for time travellers, such as the system where he could choose Watt’s Q&A system.
But it doesn't matter, this is the late Ming Dynasty, an era with scientists such as Xu Guangqi and Song Yingxing. As long as she introduces ideas, the steam engine may be like a multi-spindle spinning machine, and can be figured out by the clever indigenous people.
After listening to Aya's report on the coal mine, Zheng Haizhu looked at the hoarder on duty in the military library opposite, squinted and said: "Aya, you stay in Zhuangzi for a few months, help me pay attention to a hoarder, take a look at him
