Daming Yinghua

"Mathematics is universal, public and private, and indispensable for a day."

"Anaithology has degrees, squares, and geometry. Xu Gongguang inspired the "Original Geometry" to make our country and people learn from it. For example, measuring fields, building bridges, and using artillery can all benefit a lot. Today , we began to study the first volume of "Elements of Geometry", this volume is about triangles, with a total of 48 questions."

At this time of day, Gu Shouqian came to deliver pens, inks, papers and inkstones to Shoukuan School on behalf of Atai Miao, and passed by the classroom where the teacher was teaching arithmetic.

He stood and listened for a while, and when he turned around, he saw Wang Yuesheng and Zhang Dai coming side by side.

Zhang Dai cupped his hands and saluted, and asked, "Luxian also likes geometry in mathematics?"

Gu Shouqian said: "I was not very interested at first, but this year I was ordered by Master Sun to draw some schematic diagrams of guns and cannons, and then I realized that the guns should be measured with a blunderbuss gauge, otherwise the iron bullets would miss their aim. And this method It has something to do with geometry, so come and listen."

Wang Yuesheng added with a smile: "Young master Gu's brushwork is amazing, and he can simplify the complex. The French diagrams he draws are not only understood by gunners who have learned geometry, but also by me and craftsmen."

Wang Yuesheng's praise was definitely not out of greeting.

At the beginning of the year, after Zheng Haizhu went to Chongming to reclaim wasteland, Miao Ruiyun told Wang Yuesheng to make the casting and operation of firearms into text and graphics as soon as possible, and form a manual like the Ministry of Industry's construction procedures, and hand them over to Liu Shimin in the north and Zheng Yi in the south.

Wang Yuesheng thought about it, and suggested that Mrs. Gu, the grandson of Mrs. Tai, is a ready-made master of drawing and painting, and Sun Yuanhua was also instructed by his teacher Xu Guangqi to make the smelting and operation of artillery into a book like "Elements of Geometry" .If Gu Shou sneaked into the artillery factory and assisted Sun Yuanhua to write a book, it would not arouse suspicion. It would be better than myself, a woman who is in charge of people and money, wandering between workshops and workshops.

Now that two months have passed, Gu Shouqian's progress is indeed not slow. Wang Yuesheng just waited for him to finish all the manuscripts, and told Sun Yuanhua and Zheng Haizhu that the matter involved military aircraft.

At this moment, Gu Shouqian didn't know that there was such a deep meaning hidden in Miss Wang's bright smile, but he felt that although the pair of Bi people in front of him could not stay together in a mansion and luxury house openly, they were a loving couple, and how could they be together day and night? Wonderland.

I only heard Zhang Dai take the initiative to invite: "Brother Luxian, my younger brother found a few ancient fir boards from Shanyin, brother, would you like to go and have a look and give pointers?"

The wood used for the qin is fir for the panel and catalpa for the base.Gu Shouqian, a gentleman of literati, is not inferior to Zhang and Wang in his love of qin, so he happily went with him.

In the courtyard of Qinfang, the monk Yonghai, who stayed at Shoukuan School to teach Japanese, was caressing a few cedar boards cheerfully.

After living in Daming for a year, Yonghai's Chinese has improved by leaps and bounds, and he is now able to express praise to Zhang Dai fluently.

Gu Shouqian looked at the annual rings on the wooden board while listening to Zhang Daiyu Yonghai's narration.

Although Zhang Dai spoke modestly and peacefully, when he talked about the emphasis on the sound transmission of the piano board, he always started with "Mr. Wang said", obviously treating Wang Yuesheng's preferences as the top priority.

As Gu Shouqian listened, a thought came to his mind.

When he returned to Wenzhe Garden, he called for a boy: "Go to the shack near Jiuliwan in Sijing, find Blacksmith Du who brought me back that day, and take a look at his shop. If it is open, let him beat fifty lumber Cottonseed milling shafts are then made into hundreds of needle blanks."

Gu's mother, Mrs. Lu, was trimming hibiscus at the side, turned around, and asked her son with a trace of joy in the search: "Are you going to send some farm tools to Ximeng and Miss Zheng?"

Gu Shouqian seldom showed a knowing smile in the past few days, nodded and said: "I heard from Ximeng that an iron roller is better than a wooden roller for ginning kapok. Miss Zheng must be short of money in recent years to support the many refugees, so we will send her A few iron rollers. As for the needle blank, I heard a unique secret method of frying needles from Atai, and I am going to try it."

The "stir-frying needle" mentioned by Gu Shouqian was a necessary part of making embroidery needles at that time.

After the iron wire is cut and the needle holes are chiseled out, it should be fried in a pot over low heat, and then steamed with pine sawdust mixed with fine soil.Different embroidery workshops use different heats and materials for frying and steaming, and they all follow the habit of pinching and applying needles by their own embroiderers.

Mother Lu heard that her son was going to fry needles for his daughter-in-law himself, and she was full of longing. She couldn't help but burst into joy, and slowly echoed: "Ximeng is the most picky about needles. If you fry a set of embroidery needles for her, she will definitely know how to use them." Joyful. Ah Qian, Mom feels that Ximeng has a good eye for people. The Yin family likes to show off and make friends with all kinds of cats and dogs. The few evil businessmen they attracted this time are just like bandits. "

Gu Shouqian listened quietly.

The day after the attack, he went to Songjiang Mansion to sue the officials. Huang Zunsu personally went to the Shandong Chamber of Commerce to arrest people, and the three evil merchants had already run away.Gu Shouqian thought about the face of his teacher Dong Qichang, so he gave up, but he also thought the same as his mother in his heart. Han Ximeng's reluctance to associate with the Yin family seems quite reasonable now.

He only heard Lu's call to stop the servant who was going to work, and asked Gu Shouqian: "The blacksmith who saved you, does he have a female family member at home? I will give him a few sets of clothes and handkerchiefs, and take them with me."

Gu Shouqian said: "Even if a foreign craftsman has a good heart, the fellow countrymen around him may be good and bad. Mom, my family doesn't need to walk around like relatives. My son gave him some money to earn money, so thank him for his kindness. Salvation."

Lu Shi thought it was reasonable, so he gave up.

More than half an hour later, the servant came back and reported to Gu Shouqian: "Master, the stove is already burning at Blacksmith Du's side. The little one will give him the money, and he is overjoyed."

Gu Shouqian was transcribing text notes for the pictures of the falcon big gun, the four-jin small cannon and other firearms, without raising his head, he said lightly "Got it".

……

Chongming Island, Zhengjiazhuang.

Three months later, the second batch of about 50 Liao people was sent over by Xu San on a cargo ship from the Haoming Trading Company.

Along with Xu San on this trip, there is also a young mother——Aya.

This member of the Yehe tribe, who had been abused by both Jurchen and Han people in Jianzhou, was taken in by Zheng Haizhu, and then followed her to Hetuala to participate in espionage training, as if he had been reborn.

After Aya gave birth to a child in Liaoyang, she rested for a year, and Wu Bangde arranged for her to assist Mu Zaohua at the Yanzhou intelligence station.

This time, Aya took the child and boarded Xu San's boat from Dengzhou, and went to Chongming Island to report to Zheng Haizhu the situation of the Wangfu coal mine, and to pay the dividends of the coal mine dry shares distributed to Zheng Haizhu by His Royal Highness Zhu Yi. .

Zheng Haizhu specifically asked about the pumping of Yanzhou Coal Mine.

After all, the invention of the spinning jenny and the steam engine is an action that travelers who have come to the age of great exploration must think of.

The invention of the steam engine came from the need to pump water for coal mines.

Zheng Haizhu was not an engineer in his previous life, and he did not have the standard golden fingers for traversers, such as the system that can choose Watt to answer questions.

But it doesn't matter, this is the late Ming Dynasty, an era with scientists such as Xu Guangqi, Song Yingxing, etc., as long as she introduces an idea, the steam engine may be shaped like a multi-spindle spinning machine by smart natives.

After listening to Aya's report on the coal mine, Zheng Haizhu looked at the hoarder who was on duty in the armory opposite, squinted and said: "Aya, you have lived in the village for a few months, help me keep an eye out for a hoarder, look at him Is there something strange?"