Mr. Jia who was infected with the virus [Red House]

"Measure the land of the world!" Jia Dairu slammed his mouth. Although the students in this class were naughty and coquettish, they had ambitions and ideas. They were not like the previous students.

"Then you have a lot to learn, you can't use a ruler to measure bit by bit!"

Ma Shang said cautiously, "I heard that there is a car, I wonder if it can be used."

Jia Dairu glanced at him with a half-smile and said, "With that, you can count the great-grandchildren." He has a brief record of the car Ma Shang mentioned, which is a car with a bell that travels at a constant speed, ringing every 20 miles.Not only is it time-consuming and labor-intensive, but there is nothing to do when encountering mountains and rivers.

Ma Shang blushed, his words were unreliable and unbelievable.

Qiu Rende refused to give up and asked, "Then what should we learn? How long?"

Jia Dairu stroked his chin and made some plans in his mind. Land measurement has a breakthrough development in later generations. Even without satellite positioning, it can be measured accurately with simple instruments.

However, the premise of everything is that the surveyor has a certain knowledge reserve.

"Do you understand triangular elevation measurement? Do you know the principle of line-of-sight measurement? Have you heard of coordinate positioning? Can you know traverse survey? Do you know what is true north? What is magnetic north? What is axial north? There are also azimuth and quadrant angles. ..."

The more Jia Dairu asked, the more Qiu Rende shook his head.

North is north, and what is the true north magnetic north axis north, isn't that making things difficult for people?

Seeing that the other person's face was pale, Jia Dairu stopped talking, he just wanted the students to study hard, but he couldn't scare them back.

"Looking at how frightened you are, it's not easy for you to learn." Jia Dairu said lightly, "In this way, I will take you to measure it in a few days and you will understand. It's very simple."

Qiu Rende nodded again and again, the promotion of artificial hatching was almost done, and the students gathered together again. Early in the morning, Jia Dairu assigned a few students to set up a spot and took the rest of the students to climb up a nearby hillside.Naturally, the measurement is measured from a high place downwards, and the instrument he has in hand is a simplified version of the measuring instrument he made himself in his free time.

It's really a simplified version, glass lenses, tripod bases, levels, range finders, etc., things that have been outdated for many generations have been emptied by him.

There is no way, because there is no measuring instrument in his space, the level is all made by himself, and the poor students have to learn more.

After all, if you switch to an easy-to-use instrument, click on the point and place the instrument, the area, terrain, elevation, latitude and longitude, etc. will all be displayed.It’s not like measuring the area and elevation in your hand and you need to calculate it by yourself. It’s better than nothing, and it’s just for students to learn mathematics well.

Jia Dairu felt that the outdated equipment could be a great thing in the eyes of the students, so he looked at the camera, took a few readings, and then took a few readings at different points.Then their teachers can draw a map, and the area of ​​the field is also shown.

They all want to learn anything new that others don't know.

To measure such a large area of ​​land, it is not enough to just climb a hillside, and the point position alone is stuck. Sometimes it is necessary to temporarily change the point position after measuring a piece of data.This requires people to go down the mountain to talk to the person who stands on the tower.

After a few days, Jia Dairu was fine, but the students were so exhausted that they didn't want to move a finger.Measuring is more difficult than a quick march.

"If only I waved the flag on the mountain, you would be able to see it clearly." Qiu Rende was the one who proposed to measure the world's land, and he cared the most, and also took on the most tiring part.

At the end of the day, my legs were weak from exhaustion, and I said with longing.

"It's not impossible. I heard that there are simple semaphores in the army. We may be able to make up more practical semaphores." Mu Xuan said hopelessly.

Finally, they measured the demarcated area, and Jia Dairu drew the measured map that day. Qiu Rende pointed to the irregular circles and asked, "What is this?"

"Contour line, all points on the same line are of the same height." Jia Dairu felt that Qiu Rende was a material that could be made, so he saw the key point at a glance. "

"The map is crooked. How do you calculate how many acres there are?" Ma Shang also asked.

Jia Dairu glanced at him, "So you still have something to learn, your next task is to calculate the area of ​​this picture."

Ma Shang curled his lips secretly, and took note of this place, thinking that he didn't want to do arithmetic problems every day, and planned to go to the county government to find the yellow book to check the area.

As a dandy, Qiu Rende also wanted to take a shortcut, thinking in his heart that he had heard that Jia Jing and his wife in Ningguo Mansion were good at counting, so why not just ask them to help with calculations.

The two looked at each other, both saw the calculation in the other's eyes, and smiled tacitly.

On the second day after they finished their calculations, news came from Beijing that the emperor was on his southern tour. The students finally went to all the villages to check the situation of the artificial hatching eggs.

Behind them are the villagers who are reluctant to leave. Since these students came, every family has earned some money. Even if the students in the Simen Pavilion can endure the hardships of marching, they will not suffer themselves in eating. With money on the table, it is natural to buy some ingredients from the villagers' homes.

Fat chicken and goose, fish, milk, soybean milk, tofu, eggs, duck eggs, and various vegetables and wild vegetables are commonly bought. Later, Jia Dairu also intercepted the method of rice field eel from a passage he had read.All of a sudden, the eels in the suburbs of Beijing can be sold at a high price. The farmers have never spared no effort to catch a lot of eels and dig a lot of wild vegetables to sell to the students.

Even the little ones who are not very useful at home can get a piece or two of candy from time to time when they play with the nobles, and sometimes the leftover meat goes into the stomachs of the little dolls who circle around them.

Not to mention that later they were taught the art of hatching eggs for free, and each village got some books on how to hatch eggs and raise chickens.

It can be said that Jia Dairu's behavior of taking the students from Simenguan to study abroad has greatly prospered. The economy in the suburbs of Beijing has flourished and developed. Many families have made new clothes out of cloth.

At this time, the emperor took all the officials on board and left the prince to supervise the country. It is strange that, when he passed by Zhen's house in Jinling on this southern tour, Emperor Xihe took the fourth prince with him and left the third prince in Beijing to let him continue. Promote pinyin.

Fortunately, Concubine Zhen was by her side, so it wouldn't make people feel that they had lost their Sacred Heart.

Concubine Zhen felt extremely regretful that her son did not have the opportunity to go to Jinling to visit her family together, but it had no effect on the third prince.The left and right are just some relatives of the mother's family who haven't met very much, and besides, the Zhen family has no choice but him, so seeing or not really doesn't affect him much.

He only hated his father, who only pointed out that he had failed to promote Pinyin for many years, and ordered him to promote Pinyin to the world as soon as possible, which made him lose face.

"No matter what method is used, the people in the capital must learn pinyin!" The third prince twisted his face. He didn't expect to spread it to the whole country at once, and it is already very good to spread it in the capital.

"It's difficult!" The third prince's confidants sighed slightly, "Most people in the world are so stupid, it's not easy to let them put down their work and learn pinyin. What's more, buying books also requires money, how can they be willing to spend this money?"

What he didn't point out was that the emperor asked the third prince to promote pinyin but didn't tell the world, how to promote it without power?

"Could it be that this king can't give up because of this? Hmph, father is just biased. He is afraid that I will overwhelm the crown prince by deliberately finding such a difficult job for me."

The third prince was full of complaints, but he forgot that his mother concubine Zhen Guifei snatched it from the fourth prince by blowing the pillow wind.

The aides knew what had happened, but they would not say it unwisely at this time. Instead, they shared the same hatred, "After all, that is the crown prince, and he went away one after another. The emperor can't help but feel a little bit partial."

Then, he changed the subject and stopped the dangerous topic, "It's just that since I got the job of promoting pinyin, the third master still has to do it well, and let the emperor see your ability."

"What do you think should be done?" The third prince pressed, he was really helpless.He has studied Pinyin for a few years, with some small success, but when he was allowed to promote it to the general public, he started to get confused. The common people don't know a single character, and they don't have that dynamic pinyin at all.

"We can start with all the schools in the capital and force students to learn pinyin. In this way, the third master will have to spend more money. Scholars are no worse than poor people. You can't force them, you can only lure them."

"How to lure?" The third prince couldn't help leaning forward. If all the students in the capital can know pinyin, it will be considered a comprehensive promotion. After all, ordinary people are ignorant and there is no need to learn it.

"First of all, let all the gentlemen learn pinyin, and we must distribute pinyin textbooks to them." The staff said, "They are all scholars, so they naturally understand the benefits of pinyin."

The third prince clapped his hands repeatedly after hearing the words, "Okay, okay, this method is good."

As for the teaching materials, he rolled his eyes, "I heard that a kind of lithograph is popular in the capital recently..."

He chuckled a few times, "Promoting pinyin is a major event that benefits the country and the people. How can I make this king spend money? Those printing shops have made a lot of money, so they should repay Daqing."

What he said was not guilty at all. When he thought about it, why did the dignified prince ask the businessman to spend more money?He didn't want any rare treasures, he just wanted to print some worthless books.

The so-called upper beam is not straight and the lower beam is crooked, and Chang Shina of the Three Princes' Mansion fell down, and things have changed again.The third prince of the printing shop still doesn't like it, but Chang Shi knows how profitable the lithography technology is, and he has long been envious.

It's just that the old emperor was sitting in Beijing before, and his master didn't say a word, so he could only stare blankly.

Now it's all right, his master said, wouldn't he be sorry for himself if he didn't get it?

Chang Shi didn't think much about it, so he forced several printing shops to contribute. After printing for a few days, he found that he needed to go to Qi Liuzi's shop to buy some more reagents.

He also set his sights on Qi Liuzi's store, which is really a lot of money!

Although Chang Shi is not a businessman, he also understands some economic principles, at least he understands the principle of marginal cost.Compared with printing shops, of course Qiliuzi's shop that sells reagents saves manpower and material resources, and has lower marginal costs, which is in line with economic benefits.

But Qi Liuzi had his back against Concubine Qi Gui, so he couldn't afford to offend her.

But he was not reconciled to letting him give up the fat that was in his mouth. He couldn't help but think that it would be great if the owner of that shop was the third prince.

So he exaggerated the matter of the reagent shop tenfold and informed the third prince. Sure enough, his master was blinded by money, and there were many quarrels between Concubine Qi and Concubine Zhen.Without thinking too much, he made a decision, "What a concubine Qi, she actually competes with the people for profit!"

作者有话要说：基友的文：《整个地球都穿了》，作者八宝榛子酱感谢在2020-05-2017:05:46~2020-05-2314:58:25期间为我投出霸王票或灌溉营养液的小天使哦~

Thanks to the little angel of the irrigation nutrient solution: 5 bottles of Guangzuka;

Thank you very much for your support, I will continue to work hard!