In fact, any civilization has a special awareness of how important weights and measures are, but they are always changing, which will inevitably lead to a rupture in the inheritance of natural science.

Just imagine, the zhang of the previous dynasty is different from the zhang of this dynasty, so is all the scientific research achievements of the previous dynasty basically equivalent to being wasted?

So in the R&D department, there is something that is offered in a precious crystal cabinet, which is a standard meter mold made of pure gold, which is 1.2 meters long, 80 centimeters wide and 3 centimeters thick. Not only is there a 1-meter-long 100-point unit on the top, but there is also a small ruler accurate to the millimeter at the bottom. And how exactly this scale was measured, and the measuring tools were all sealed and stored in a cabinet next to it.

Also engraved on it is a line of small letters: "This is a small step for weights and measures, but a giant leap for the whole world".

How precious this thing is, in the words of Zhang Shangshu, who regards him as a treasure, the value of this thing can be compared to the sun and the moon, and can be compared to three thousand miles of rivers and mountains.

The important ministers of the DPRK who are in charge of the Ministry of Industry and the Ministry of War, their favorite way to decompress is to come to the R&D Department to stare at the gold measuring device in this crystal box, and then start to measure the world with the formula and meter ruler in their hands with their daughter.

Zhang Shangshu is a mathematical genius! This is something that Song Beiyun never expected, this genius is like a seed that has dried up for a long time, and the moment it is contaminated with the soil of science, he inadvertently blooms in an instant.

millimeters, centimeters, decimeters, meters, square centimeters, square meters, cubic meters, the formulation of these units, with the corresponding formulas, many problems that have plagued Zhang Shangshu all his life have been solved, and he is even younger than ten or twenty years younger these days.

Most of the young men in the R&D department didn't know that this old man who came to mess with them when he had nothing to do was a member of the court, and the atmosphere was quite good, and there were even some disputes sometimes, and the two sides fought to blow their beards and stare at each other, and finally make arguments and slap each other's faces, and the academic atmosphere was quite strong.

"There is no shortage of geniuses in every era, what is lacking is the soil for geniuses to blossom." Song Beiyun squatted outside the construction site and said to the people who came to deliver him food: "I think you go a little deeper." ”

"I'm working hard." Wonder words are also very happy: "Maybe we can make a difference machine." ”

Difference engine...... Song Beiyun showed a smile on his face, the difference machine is the forward-looking technology of steampunk, if the difference machine was allowed to develop at that time, the future may be the era of steampunk, people sit in steaming airships to shuttle through the sky, and the sea is full of reverie Steam technology products.

Song Beiyun is actually not proficient in mathematics, but she is proficient in wonderful words, and she should actually be the head of the Institute of Weights and Measures and Arithmetic.

She was now invited by Song Beiyun to come to a class in two days, although at first many people despised her because she was a woman, but later even Zhang Shangshu would sneak over to audit.

The fly in the ointment is that she is too handsome, and she will always be shown love for no reason, but in the end, it is a subtle era, there are not too many excesses, those who are broad and young in the capital, if they don't have some ability, they don't dare to provoke Song Beiyun easily. And where can there be some capable people in the family?

Wrong!

There is one exception! There was a young man in the design institute, who was only sixteen years old this year, and there was nothing too special when he first met, but later he learned that he was the son of the imperial historian of the dynasty.

This family is very prominent, and later Song Beiyun asked him why he came here, didn't he know that he and his father were mortal enemies?

Guess what the lads say? People said: It is because he knows this that he does not want to reveal his name, he heard about this place from a friend, and since then he has been unable to sleep and eat, and he wants to see it.

And it was these words that directly sold his friends, and Song Beiyun found out that in addition to the Institute of Metrology, the Institute of Mathematics, the Academy of Astronomy, the Academy of Geology, the Design Institute and the Institute of Engineering, there are all kinds of ministers, families and noble children in several other places to varying degrees.

Many of them even paid for their own research here, and the reason for this was surprisingly unanimous, that is, no one here would let them read the books of the sages, and they were not interested in those books, but they were interested in them.

Outside, whether it is a family member, a partner, or a gentleman from a private school, they all feel that they are not doing their jobs, but here they have found a place where everyone is not doing their jobs, and many of them have recognized Zhang Shangshu, but none of them have spoken out, in their words, this is the tacit understanding in their small group.

Of course, Song Beiyun also has a chemistry college, but there is only one person in his chemistry college, and that is Zuo Rou......

Zuo Rou is a little heel, and since she was a child, she has been the kind of person who has to do whatever Song Beiyun does. Song Beiyun sold medicine, so she opened a pharmacy, and later Song Beiyun quit, so she gave the pharmacy to Zuo Fang. Song Beiyun went to the Imperial City Division, he also went to the Imperial City Division, wearing a flying fish costume all day long to swagger through the market, and now Song Beiyun has set up a workshop, she sits in the workshop every day and watches people toss iron bumps and bricks.

When Miao Yan went to give a big lesson, Song Beiyun also returned to the small courtyard on the left, took off his rattan helmet and squatted there to watch Zuo Rou staring at the small calciner in the corner in a daze.

"It's almost burning?"

Xiao Song walked over and rubbed the soot on Zuo Rou's face, and a black mark appeared on her cheek.

"I don't know." Zuo Rou yawned: "The School of Chemistry is so boring. ”

"Chemistry is the most interesting, and you say it's boring?"

"But you've been burning earth here all day......"

"Do you know what this is!"

"Cement."

Zuo Rou was puzzled, looking at Song Beiyun with curiosity on her face.

Xiao Song didn't say anything, just got up and walked to the corner and brought over a bag of cement that had been ground yesterday, he squatted on the ground and poured out the cement and dug a pit in the ground.

"Look, pour water." Song Beiyun took a scoop of water and poured it into the cement nest, picked up a wooden stick and began to stir it: "You will be able to see a miracle tomorrow." ”

When he had mixed the cement, he shoveled a shovel of river sand from the side and mixed it into the cement, and when he had mixed it well again, he began to wipe it off the ground next to him with a thin plank.

Zuo Rou squatted beside him and stared intently, and after he smoothed the cement on the ground, Zuo Rou poked his finger curiously, and said disgustedly: "It's just mud, this color is a little strange." ”

"Don't poke it!" Song Beiyun smoothed the hole again: "You'll know when you do it tomorrow, I'll wash my hands, you can go back and sleep for a while." ”

"I don't!" Zuo Rou looked at Song Beiyun's back, and imprinted her palm print on the undried cement with lightning speed: "I'm going to wash my hands too!" ”

Not long after she followed Song Beiyun to the room, she began to feel sleepy, but Song Beiyun lay on the only small bamboo bed and read a book with her legs crossed.

"Get out of the way, I'm sleepy."

Xiao Song knew that this guy was very annoying, so he didn't argue, and silently moved his butt to the side, Zuo Rou lay down directly, and fell asleep on his side.

If there is anyone who is the most defenseless against Xiao Song, it is probably Zuo Rou, but it just so happens that Xiao Song is actually ashamed of her in his heart, after all, she was young and ignorant, Zuo Rou was delicate like a doll at that time, so she committed an unforgivable sin, so Xiao Song generally does not do anything to Zuo Rou.

But the more this is the case, the more Zuo Rou is guarding against him, and now he has reached the point where even if he is, if he doesn't have paper around him, he will shout at Song Beiyun at the top of his voice, stupid, annoying and cute, there is no way to take her anyway.

"I say, Song Dog."

"What are you doing!" Song Beiyun suddenly turned his head and said sharply: "Don't call me Song Dog, I'm angry." ”

"Oh...... Song Ah Dog. Zuo Rou turned around and looked at Song Beiyun with sparkling eyes: "Are you and Jin Ling'er no longer clean?" ”

"Huh? What nonsense are you talking about. ”

"Two days ago......" Zuo Rou whispered: "Jin Ling'er is full of your smell, the smell of a dog man." ”

"Huh?" Song Beiyun was stunned: "You have such a good nose?" ”

"Hmm......" Zuo Rou leaned into Song Beiyun's chest and sniffed: "That's the smell, she is full of this smell." ”

Song Beiyun didn't bother to pay attention to her, and continued to lean there to read, while Zuo Rou also got up, and said with an unhappy face: "I want it too!" ”

"Whatever you want, hurry up and get to sleep!"

"I don't have what Jin Ling'er has, I'm not reconciled." Zuo Rou said angrily: "She has robbed me since I was a child, obviously I recognized you first!" Why did she take the lead? ”

"Hey, don't take me for a thing." Song Beiyun sighed and said, "Can this thing still be said to come first and come first?" ”

"Unwilling!"

Song Beiyun ignored her, just diverted the topic and said: "Get up without sleeping, it's time to endorse, have you memorized a few reaction principles I told you?" Iron combustion, aluminum combustion, carbon combustion. ”

Zuo Rou suddenly lost her voice, instantly turned over and pretended to sleep, and Xiao Song patted her ass: "It's useless to pretend to be dead, have you memorized it?" ”

"I'm asleep, don't ask me."

And at this time, suddenly there was a loud noise outside, and the earth trembled, and before Song Beiyun's mind could react, his body had jumped up from the bamboo bed in an instant, and he rushed out barefoot.

Smoke spread in the distance, and when he came outside, his face was half cold.

Where else can I care about anything else, I just muttered with a crying voice: "Baby pimple, don't have an accident...... Don't get into trouble......"

As he was marching, a number of people were already running in that direction with him, and he pulled a man by and asked, "What exploded?" ”

"Warehouse, Lord's house! The warehouse blew up! ”