Xu Guangqi did what he said, and after returning to the post house, he went back to his room to change into civilian clothes, and ran to Su Hao's room with a candle. Su Hao sent Chen Guanyu out to buy some pastries, fruits, etc., to entertain Xu Guangqi, and the two sat on both sides of the table and began to talk freely.

Without Chen Dao and Xiong Ji interfering on the side, the content of Su Hao and Xu Guangqi's conversation was much deeper. Xu Guangqi is a person who likes to study, and has read a lot of ancient scientific and technological works before, especially in mathematics. Su Hao's stomach was full of modern mathematical knowledge, and he said a few items casually, which made Xu Guangqi feel like seeing the sun, and many mathematical problems that had bothered him suddenly became clear at this moment.

"This way of arithmetic is indeed unique, and it is very different from my Chinese arithmetic. The foolish brother feels that there are four no-haves in this Yiren arithmetic, which means that there is no need to doubt, no need to speculate, no need to try, and no need to change. It's not like my Chinese arithmetic, it's all a trick of delusion, and there is a number of theosophys. Xu Guangqi said.

Su Hao didn't know what to say, in fact, there were some very brilliant mathematical achievements in ancient China, and he was at the forefront of the West in many aspects. However, compared with Western mathematics, ancient Chinese mathematics lacked a set of logical systems that dominated the overall situation, and various mathematical knowledge was fragmented, and the further it developed, the more difficult it was to justify itself. Some wandering magicians relied on mathematical knowledge to pretend to be a ghost and turned it into a metaphysics, which led to the development of mathematics going even more astray.

On the other hand, Western mathematics, since Euclid's time, has established a set of logical reasoning systems based on axioms, axioms, and definitions, and later generations have continuously improved them in this logical system. Make it continue to prosper. After modern times, the impact of the difference between Chinese and Western mathematical thinking has become more obvious. The decline of traditional Chinese mathematics is irreversible.

In the parallel world, Xu Guangqi was the first person in ancient China to systematically come into contact with Western mathematics, and his translation of Geometry completely subverted the traditional Chinese concept of mathematics and brought Western mathematical thought into China. In fact, Xu Guangqi's critical awareness of traditional Chinese mathematics appeared long before he came into contact with the original geometry, and when he talked to Su Hao, his feelings became even stronger.

"Change. I think that these Yiren theories that you have learned should be sorted out as soon as possible and printed into a book for the reference of students all over the world. Xu Guangqi said eagerly.

Facing Xu Guangqi's enthusiasm, Su Hao felt a sense of guilt. As a traveler, he should indeed sort out this knowledge that transcends the times. Promote it. All of this knowledge can be turned into productivity.

The Ming Dynasty was one of the most economically prosperous dynasties in ancient China, but even in such a dynasty, in the year of the catastrophe, the people were still miserable and starved to death. It happens almost every year. If there is some advanced knowledge to guide the production of all walks of life, with the hard work of the people of the Ming Dynasty, it should not be difficult for the people of the whole country to live a life of food and clothing, right?

It's a pity that in the half a year that Su Hao has crossed over. He has always been in a state of involuntary self-control. He does a lot of things, but more often than not, he just uses his knowledge to solve the problem at hand. and did not organize and impart their own knowledge. In addition, he sometimes deliberately hides this knowledge because he is worried that it will bring trouble to him. For example, about the smelting technology of high-manganese steel, except for Hao's father and son, everyone else basically does not know, let alone apply it in practice.

"Brother Xu, the younger brother also has his own difficulties." Su Hao said, "What the younger brother has learned is the knowledge of the Yi people, and it belongs to the left side door. If you make a big publicity, you're afraid of attracting criticism. ”

"What's the fear of that?" Xu Guangqi said, "If the virtuous brother of the change is busy with affairs and has no time to tidy up, the foolish brother is willing to do it for him." As long as these doctrines are taught to the foolish brothers, the foolish brothers should compile them into a book and spread them widely. ”

Su Hao said: "Brother Xu, aren't you going to Shaozhou to teach, how can you have time to do these things?" ”

Speaking of this, Xu Guangqi was a little gloomy, he sighed, and said: "Alas, what I said is very true, there is no livelihood in the next place, and it is indeed ridiculous and generous to think about these things." It's just a pity that no one knows about such good learning. There is no one in the world who should not learn these doctrines. ”

Su Hao's eyes suddenly lit up, and he asked, "Brother Xu, you went to Shaozhou to teach, but you have made a decision with the other party?" If there were other opportunities, would you like to try? ”

Xu Guangqi said: "This teaching position in Shaozhou was found by an uncle of my clan on my behalf. If I don't go, it's fine, just write a letter to him about it, but I don't know what the chance is to change what I said. ”

Su Hao said: "Mr. Wu Zhicheng, the teacher of Fengcheng Longguang Academy, is a young brother's old friend, and he is also quite interested in the study of Yiren. The younger brother once wrote the Yiren theory he learned into three booklets of mathematics, physics and chemistry and sent them to Mr. Wu. If Brother Xu intends to learn the doctrine of Yiren, the younger brother is willing to write a letter of recommendation to Brother Xu, and Brother Xu will find Wu's teaching advice in this hospital, and he will definitely be able to arrange a teaching position for Brother Xu.

Brother Xu can discuss the Yiren theory with Mr. Wu in Longguang Academy, and there are also students such as Ma Yu and Jiang Yida in the academy, all of whom have studied Western arithmetic with their younger brothers, and Brother Xu will gain something with them. ”

"Really? Foolish brother is willing to go. Xu Guangqi responded happily. For him, teaching is the same everywhere, if he can go to Fengcheng to eat enough, and at the same time can discuss Western mathematics knowledge with a group of students, teachers or something, such a good thing, how can he refuse.

Su Hao was also extremely excited when he saw Xu Guangqi agree. Xu Guangqi's talent should be above Wu Zhicheng, Ma Yu and others, if he is willing to stay in Longguang Academy to study mathematics, physics and chemistry knowledge, then his knowledge will not be inherited by anyone. As for what kind of teaching position or something, Su Hao is just talking, Su Hao is now a person who has several industries in his hands, what is the difficulty of supporting a Xu Guangqi.

Su Hao wrote two letters on the spot and asked Xu Guangqi to bring them to Wu Zhicheng and Lu Xiuer respectively. The first letter was to ask Wu Zhicheng to take Xu Guangqi in, and the second letter was to ask Lu Xiuer to take out money to fund Xu Guangqi, so that he could have no worries about food and clothing in Fengcheng, and it was best to be happy.

Xu Guangqi accepted the letter, inadvertently looked up out the window, and couldn't help but wonder, it turned out that there was already a slight light outside the window, and the two of them unknowingly talked all night.

"Listening to your words, it is better to read for ten years, and the younger brother is not weak, but he has seen extraordinary. Zixian used to think that he had some experience, and compared with the change, he realized that he was a frog at the bottom of the well. Xu Guang concluded with some emotion.

Su Hao waved his hand again and again: "What Brother Xu said, I am really ashamed of my little brother." The younger brother was just a coincidence that he had a missionary for a few days, and he also had some experience of his own. Brother Xu is only eight buckets high, if he studies this Yiren doctrine, his achievements will definitely be a hundred times that of the younger brother. ”

"Changed to modesty." Xu Guangqi said, "Brother Fool has said goodbye first, let's rest for a while." Didn't you say that there was any other exercise today, and after talking freely with Gaizhi, the foolish brother was anxious to think about the subtlety of this earth-surveying technique. ”

Su Hao sent Xu Guangqi away, went to bed and slept for a while, and the sky was already bright. He got up to freshen up and change clothes, walked out of the room, and saw that Chen Dao, Xiong Ji, Xu Guangqi and others had already packed up and were waiting for him. Xu Guangqi also stayed up all night like him, but there was no tiredness on his face, on the contrary, there were some excited looks.

A few people left the post house and came to the tent camp set up by the Kanyu camp. The soldiers of the survey camp got up earlier than them, even on the march, Hao Tong and Deng Kui still took them to run a few miles outside the town, came back and practiced swords and guns for a while, and were eating at this time, preparing to conduct surveying and mapping drills around Qiaoshe Town for a while.

Some soldiers had already brought rice porridge, rice cakes and side dishes to Su Hao and others, all of which were made by the camp themselves. Su Hao beckoned everyone to eat together, and then ordered to line up. The soldiers stood in a phalanx in small flags, horizontal and vertical, everyone had a stiff face, a straight waist, and a strict military appearance, not only Chen Dao nodded secretly in surprise, but even Xiong Ji and Xu Guangqi were amazed.

"This is clearly an army, where is the people?" Xu Guangqi whispered to Su Hao.

Su Hao also replied in a low voice: "Brother Xu, I'm sorry, I hid something yesterday. The identity of the younger brother on this trip is the hundred households of a hundred households under Nanchang Wei, and these soldiers are the subordinates of the younger brother. ”

"It turns out that Brother Su turned out to be a person in the army, and he was disrespectful." Xu Guangqi didn't know whether to be surprised or regretful.

After the formation was completed, Hao Tong ran over to ask Su Hao for today's task, Su Hao turned his head and said to Chen Dao: "Chief Chen, why don't you give a lecture to the soldiers first?" ”

Chen Dao smiled and waved his hand: "It's okay, I don't know what to say, you just do it according to the way you practice on weekdays, don't worry about me." I said a long time ago, I just accompanied you to Yunnan for a walk, and this military affairs are still in charge of Su Baihu. ”

Su Hao knew Chen Dao's temper and did not force it, so he issued an order to Hao Tong and Deng Kui, asking them to start arranging for each small flag to carry out surveying and mapping work. Hao Tong had already arranged for people to run around the perimeter on the first day and drew a sketch of the perimeter, and at this time, he called the small flag officers over and assigned tasks to them. After the officers of each small flag got the drawings assigned to this small flag, they returned to their own team, and set off with 0 soldiers with small flags, carrying various instruments.

"Director Chen, are you going to go together, or are we going separately?" Su Hao asked Chen Dao.

Chen Daodao: "Let's split up, so that you can follow a few more teams." If Brother Xiong and Brother Xu want to, why don't they each go with each other? ”

"I'll follow Su Baihu." Xu Guangqi said first.

"Okay, I'll go with Brother Xiong." Chen Dao said with a smile. (To be continued.) If you like this work, you are welcome to come to the starting point (0000) to vote for recommendation, monthly pass, your support, is my biggest motivation. )

ps: Thanks to the book friend "Dazhu Xiaozhu" for his guidance, Orange knows that he has been writing "self-thought" as "self-deprecation", all because of his lack of skill, which is really embarrassing.