Duan Qingshi looked at geometric figures, which he had never seen before. For example, the calculation of area and volume, various triangular figures, and even the Pythagorean chord of a right triangle are known by his experience, but the calculation method is not so concise, and there has never been such a systematic and regular summary in the family inheritance, so clear at a glance.

"Lord Jiang, these are your ......" Duan Qingshi's hands trembled a little, this time he went out to inspect the location of laying the light rail, and came back to report to Jiang Xingchen, but he didn't expect to see such a thing.

"Yes!" Jiang Xingchen nodded and said, "If it is useful to you, you can copy a copy and use it!"

"Okay, thank you, thank you, thank you!" Duan Qingshi's heart was full of joy and nodded busily.

"What is the result of your investigation this time, can you lay a light rail on the side of the Cursed Land?" Jiang Xingchen asked. Normally, heavy rails are used to lay railways, but now the steel mill has not yet been built, which is a bit difficult. So he always wanted to try forging a batch of light rails first, of course, not running trains, but horses to run.

It is definitely not possible to go from the star collar to the east three collars, there are many swamps and hills in between, and it was very difficult to build the road in the first place.

And from Xingchen to Hongyuan City, Jiang Xingchen's plan is to lay the first railway, and there is no need to make any light rail. That's why I chose the Cursed Lands. After all, there has just been a large area there, and it also needs to be developed and constructed.

Duan Qingshi calmed down for a moment and said, "I have surveyed the terrain over there, and there is no problem with paving the road, so it is estimated that the light rail you mentioned should not be a big problem...... It's a harsh winter here. I can't do it, so I can just use this time. If you wait until the beginning of spring. I'm afraid there isn't enough time again.

"Hmm!" Jiang Xingchen thought for a while, nodded and said, "That's good." I'll prepare right away! The head of the Duan family will bring people over first to make plans!"

Duan Qingshi agreed, got up to leave, Jiang Xingchen stopped him again, and said, "Next year, a university will be established on the site of Qingshan Village, and I am going to add construction projects to it, what does the Duan family master think?"

Duan Qingshi was stunned for a moment, and then showed hesitation. Every building firm and family has its own unique things, which are not kept secret to the family. Although this is the first time I've heard the word university, it's clear that it's the same as college. Joining a university is not about teaching your own things?

But he turned his head and glanced at the geometric figures on the table, the calculation method! The Duan family master gritted his teeth and said in a deep voice: "Okay! Lord Jiang, our Duan family agrees to join!"

Jiang Xingchen said with a smile: "Don't worry, Master Duan, I won't let you suffer! This engineering construction is temporarily set as a research subject, and the purpose is to solve the current technical problems. Our researchers will work with your craftsmen to learn from each other and research together!"

"That's it!" the Duan family master breathed a sigh of relief. In fact, he has already encountered a problem, there are many large-scale buildings on the ground facilities of Xingchen Ling New City that the Duan family is not capable of building.

After confirming the matter, Jiang Xingchen left the Lord's Mansion. Go to the blacksmith shop and talk to the old craftsmen about casting the light rail.

Now the steel mill has not yet been built, and all the casting needs to be done by a blacksmith shop. Since it's just a horse-drawn carriage, there's not so much pressure. So you don't need manganese for the time being. However, the production of steel has increased. You have to add a few blacksmith shops.

Another important point is that the rolling machinery has to be researched as much as possible. There is no rolling machinery. The rails simply don't work.

Fortunately, a lot of steam engines were produced during this period. And with the continuous improvement of technology and materials, the response to thermal efficiency has also been strengthened.

After explaining here, Jiang Xingchen went to the research institute again and handed over a drawing to Xian Ning.

Xian Ning took over and watched, frowned and asked, "What is this?"

"Compass, you can use it to learn mathematics in the future! Physics has to wait, chemistry depends on you, I have to work in the blacksmith shop during this time......" As he spoke, Jiang Xingchen took out another pile of paper and said: "This is elementary mathematics, but it is definitely not sound, and it needs to be carefully studied in the future, you can see it first! If you don't understand anything, go to the blacksmith shop to find me!"

"Okay! I'll start right away, and divide those children into classes first! Those older ones are seventeen or eighteen, and their comprehension skills are much stronger than those of the younger ones!" Xian Ning nodded.

"You pay more attention to your body!" Jiang Xingchen instructed, left the research institute, went back to the lord's mansion, and set up a batch of temporary blacksmith shops at the designated location. Then he went to the back mountain, plunged into it and began to study day and night.

Now it is necessary to study the steel rolling machinery, and his composite force array and precision curved array play a heavy role, and he must personally go into battle......

Just when he was busy here, there was a thunderous sound from the top of the back mountain. Tang Chuxue punched slowly, and the muffled thunder came from her body.

The old man and Xiao Yu looked at this scene dumbfounded, they were both masters, and the operation of the vitality could also make a sound in the body. But Tang Chuxue didn't use his vitality at all now, and he actually let out such a loud muffled thunder.

"Xiaoxiang, have you made any progress in learning Tai Chi with the girl in the past two days?" the old man took a deep breath and asked in a low voice.

"No?" the little cat girl shook her head in frustration: "What Sister Tang Chuxue said, I don't understand it at all!

"Hey, so am I!" the old man sighed: "Could it be that this kind of boxing technique can only be practiced by the first snow girl?"

"I don't think I'd better stop learning, I can't learn Tai Chi well when I go back, and I'll delay my current kung fu again!" The little cat woman retreated, she really couldn't understand Tang Chuxue's explanation.

"If you don't learn it, you won't learn it! Maybe the attack power of this punch method is really bad!" the old man said against his will, just looking at the fierce fluctuations when Tang Chuxue exerted his strength, he knew whether it had attack power.

At this time, the thunder in Tang Chuxue's body gradually decreased, and her movements slowly converged, and she stopped her luck.

"Sister Tang, how do you feel after you finish practicing?" The little cat girl jumped in front of Tang Chuxue after two clicks, and the old man also walked over.

"I feel okay!" Tang Chuxue patted the little cat woman's head, turned her head to look at the old man, and said, "I may have to go overseas in a while!"

The old man was startled, and said loudly: "Why are you going, looking for the ancestor of Chongming Island...... Do you really think that you can beat others by practicing this Tai Chi?"

"I didn't say I'm going now, why are you in a hurry! I have to go for a while!" Tang Chuxue said lightly.

"Huh~" The old man breathed a sigh of relief, he was really afraid that Tang Chuxue would inflate himself, so he ran to Chongming Island regardless of it. Let's not talk about an unfathomable ancestor, even those masters of other people besiege you, and you don't want to come back alive.

"Don't even think about going after a while. When will you be able to beat Pink!" the old man glared and said.

"I've beaten pink!" Tang Chuxue was speechless, a twenty-eighth-level divine beast, unless I am promoted to the Great Perfection, maybe there will be a fight. Legend has it that the strength of the Great Perfection is more than ten times higher than that of the eighth layer of Yuanqi.

"Alright, don't think about this for now!" said the old man, pulling out a piece of paper.

"Look at the question, what question?" Tang Chuxue was a little stunned, how could the old immortal study this.

After taking the paper and looking at it, Tang Chuxue couldn't help frowning and thinking carefully.

The little cat girl came up and looked at it, and was suddenly stupid, and said, "It's strange, it's really missing a citrine coin!"

Not long after she finished speaking, Tang Chuxue burst out laughing, shook her hand and threw the paper to the old man.

"Huh, did you make it?" said the old man happily.

"Yes, it's done, but I can't sue you!" Tang Chuxue said with a smile.

"Why?" The old man is unhappy, it doesn't matter if I am teased by Nier, but you Tang Chuxue is my great-granddaughter, so why don't you look at me.

"This question was given to you by Jiang Xingchen....... I won't get involved, you have to find a way by yourself!" Tang Chuxue waved her hand and led the little cat girl down the mountain.

"Hey, hey, hey!" the old man shouted three times in a row, but Tang Chuxue ignored it. He was so angry that he tore up the paper on which he wrote the question, and said angrily: "I still don't believe it, I can't get the answer to a question...... Little soul, you wait for me!" the old man kicked the snow hard to vent the anger in his heart, and then left through gritted teeth......

In the following days, Jiang Xingchen New Town was not busy, but the research institute and the blacksmith shop were busy. Xian Ning not only had to arrange math classes, but also had to divide the children into classes. In addition to this, she had to participate in the research of steam locomotives.

Jiang Xingchen is even busier over there, how can the rolling machinery be so easy to handle, and he must be careful.

Fortunately, during this time, the craftsmen of the blacksmith shop completed a large number of standard and uniform specification parts, which made the speed of mechanical development increase a lot......

Before I knew it, the time was mid-January, and there was a deafening cheer in the blacksmith's shop: "Success, the measurement of this section is the same as on the drawing." The rolling machinery is finally done.

All the craftsmen were cheering, even the old men in their fifties and sixties. These days, they have been working day and night, and they have finally come to fruition.

Jiang Xingchen didn't get too excited, this time his two formations played a huge role, so he could complete it so quickly. But there are other machines in the back, this is a special-shaped steel, and there will be more in the future.

In addition, the training of craftsmen for various machine tools takes a long time......

Production continued, and the loud noise of steam engines sounded in the newly built blacksmith's shop, and large quantities of iron ore and combustible ice were moved out of the warehouse......

At this time, Xianning's math course had already begun, and he and several researchers took turns teaching the children to teach the math knowledge summarized by Jiang Xingchen.

At the same time, far beyond the mainland, a whirlwind has also rolled up in the Ocean Islands! (To be continued......