Fall In Love with the Technology Tree

    When it was raining in the spring, a soft-pen calligraphy class was added to the classroom of the Little Forest Courtyard.

    According to Ah Sheng's original plan, the orphans can read and write, even if they only know simplified Chinese characters. However, reality always slaps her in the face. Among the reading materials that Uncle Qing gave her were quite a few cursive scripts on silk and bamboo slips in Xiao Zhuan. Ah Sheng thought that if he sent them out in the future to be on their own, or to spy on intelligence, he would not be at a loss when he encountered Xiaozhuan cursive script or no pencils. Therefore, the calligraphy course could not be stopped.

    She herself does not know the cursive script and Xiaozhuan very well, so she was taught by Qingbo, and the twins learned with the orphans.

    Although he was not as careful and calm as when his grandfather was there, Ah Sheng tried his best not to let himself and his brother waste time. Culture classes and physical education classes could not be held every day, and on weekends, time was set aside to have fun with the Xiahou brothers in the fields. They have now learned Yuzhou dialect from local villagers. Although Yuzhou is close to Sili, there is still a certain accent difference between the dialect and Luoyang Mandarin.

    In addition to learning, Craftsman Ai's iron smelting career has also made new progress.

    After switching to a blast furnace made of clay refractory bricks and roughly desulfurized coking coal, the smelting of pig iron with stable performance is no longer difficult for blacksmiths in other courtyards. Originally, there were blowers and shaft furnaces in this period, but Ah Sheng made only slight improvements, and then established strict production standards through temperature measurement and density measurement to prepare for large-scale smelting in the future.

    The real battle is steelmaking. At this time, the so-called magic weapon was generally made of steel. Repeated forging requires a lot of manpower, and the quality of the final product completely depends on the experience of the craftsman. This kind of steelmaking method with extremely low cost performance was immediately crossed out by Ah Sheng from the schedule.

    She prefers to use modern methods to make steel. First, soda ash and calcium oxide are used to remove sulfur and phosphorus in the pig iron water, and then the carbon content is reduced in the open hearth furnace to obtain wrought iron, and finally the mixed pig iron wrought iron is smelted to obtain qualified steel.

    This process may last for decades. Before that, only the steel frying method [1] and the pouring steel method [2] can be used to transition.

    The transition that Ah Sheng thinks is very advanced in the eyes of Artisan Ai.

    "According to the master's instructions, the first batch of five daggers and thirteen long swords made with the new method are here." With an excited face, he deliberately lowered his voice, but he couldn't hold back the ecstasy in his tone, "A batch is produced, and there is no waste, and it will be ready in three days. Counting the preliminary process, it will only take seven days. However, it is as hard and sharp as Hundreds of steel made by the young mansion. Master, with this method, it can be expected for several months to arm the division of ten thousand.

    A Sheng picked up a dagger from the wooden plate and looked carefully at the candlelight. In fact, she couldn't tell the difference between the steels, she could only look at the lines on the dagger. Beautiful, as long as it is steel, it is born with a cold beauty.

    "The temperature of the furnace for frying steel is not low. You should first come up with safety production regulations."

    Craftsman Ai was stunned for a moment. He originally thought that Ah Sheng would be the first to care about these sharp blades made with the new method, but he did not expect that she would be the first to consider this.

    Jiang Ai did not answer immediately. Ah Sheng raised his head in surprise: "What's wrong? Is there any difficulty?"

    "Neither. Master... merciful."

    A Sheng smiled and threw the dagger back into the wooden plate. "I'm not kind, I'm just stingy. It's expensive to train a craftsman with high loyalty and proficiency."

    Craftsman Ai: ...he obviously thought of his generous monthly salary. I couldn't answer these words, and after a long silence, Jiang Ai had to pull back the topic: "I will write the rules for safe steelmaking... I will write it down tomorrow. What do the masters think of these weapons?"

    "You have more experience than me, and if you say it is good, I will believe it is good—"

    Artisan restored his dead face. According to the little master's urine, such a random beginning must be followed by a "however".

    "—However, I'll give you another idea. Alloys. Adding copper, tin, aluminum, manganese to steel... Different alloy steels vary, some are harder, some are harder The toughness is stronger, and some will not rot for a long time. Control the variables and do more experiments, and there may be unexpected surprises. The ancients cast swords with their bodies, and this is probably the result."

    Artisan Ai nodded and agreed, although he did not know what the so-called aluminum and manganese were, but since they were placed together with copper and tin, they were probably also metals. .

    A Sheng also thought of this question: "There is probably no elemental aluminum and manganese, so you can choose rocks of different colors, especially rocks with unusual colors, and grind them into powder for testing. Remember Write a report to me, and remember the ratio, density, hardness, color, toughness..."

    "No."

    "Well, go ahead."

    The craftsman Ai turned sixty degrees and turned back again. After hesitating for a moment, he said, "I want to ask the master for someone."

     "Oh? Who is so lucky to be in the eyes of Master Ai?"

    Jiang Ai was teased and didn't give a reaction, still expressionless: "Ding's school, Ah Xiu."

    "Axiu? Axiu..." Asheng closed his eyes, but he was actually looking through the files of the orphans in the space, "The 50th place in the March monthly exam, 67 points for writing , 81 points in arithmetic, 58 points in calligraphy, good sports, good labor. Generally speaking, his grades are lower than average, he has a black dog, he is withdrawn by nature, not good at words, and his best friend is Qin Liu."

    “…”

    "What do you want him for?"

    "Can endure hardship, not make noise, and be good at distinguishing stones."

      ore.

    This is really a treat.

    In the morning class on the second day, everyone just finished the morning exercise, and Ah Xiu was rewarded with an iron token in front of everyone.

    The groves in spring are lush and lush, and across a wall, the smoke from the dining hall rises, accompanied by the aroma of starch and soy milk. Ah Xiu held the token in both hands, stood blankly under the white wall and green tree, and did not give a response for a long time.

    Liu, as the children's math teacher and head teacher, also passed the message: "The master has an order, starting from today, Ah Xiu's labor class will no longer flow with the class, and directly enter the workshop with this order , follow the instructions of Master Ai."

     Immediately there are envious glances. Although it was not stated clearly, Ah Xiu was accepted as a disciple by Master Ai. Master Ai, the master Ai who received the highest salary. Following such a master, Ah Xiu almost booked a position as a future workshop manager.

    "The big class is not allowed to fall. The master said that if you miss 60 points in another class, you will be fined three times and the token will be confiscated."

    I gave the sweet dates and the stick. Ah Xiu just reacted. He put away the cast iron token and nodded, "No." He didn't take the initiative to salute Liu, not because he was rude and arrogant, but because he was really dumb.

    April, it is late spring.

    The sun is getting longer and the weather is getting hotter. Around the tomb of Cao Teng's tomb, herbaceous plants began their most enthusiastic growth cycle. The legume family represented by astragalus blooms purple flowers among the green grass. Cymbidium and wormwood give off an elegant fragrance under the sunlight. A gentle breeze brushed the newly engraved handwriting on the tombstone.

    The stele of Caojun, Marquis of Feiting, the permanent attendant of the Han Dynasty, Changle Taipu.

    A middle-aged man in blue clothes with a sword came towards the wind with his servants and walked vigorously up the shallow **** to the tombstone. In the plain of Qiao County, you can see far away from the shallow slope. Fields, rivers, city walls, all in one view.

    "Master Cao, the scenery is beautiful." After he finished speaking, he sat cross-legged on the grass and poured wine on the ground.

    "Duke Cao, Shan Chao is dead. Ha, five princes, stepped on the blood of thousands of Liang's people and climbed to the high position of the general of the chariot. Haha, hahaha..." He laughed for a long time before stopping, "Cao Gong, you juniors are not as good as you, far worse than you! What if you helped the sage get rid of the generals, with the arrogance of these eunuchs, sooner or later they will not be tolerated. Yu Sheng. Feng Shui takes turns. Haha, hahaha…”

    The middle-aged man got up and patted the dust on the tombstone.

    "The more eunuchs I saw, the more I felt that Duke Cao was valuable. Duke Cao gave me the kindness of supporting me. I should have been there on the day of Duke Cao's funeral. However, I was at the border at that time. He was not allowed to escape, and was later implicated in prison, where he contracted a disease, and has been delayed until now because of his illness, so Duke Cao won’t blame me.”

    While muttering to himself, he burned the silk used for sacrificial sacrifices, cleaned the dust, wiped his face, and walked down the slope.

    The servants led several brown horses from the half-height grass.

    The middle-aged man jumped up, sat firmly on the back of the horse, and rode the horse forward. And his few humble servants were also excellent knights, who followed behind him without taking a step.

    The horse's hooves ran about a kilometer and entered the farmland area. There are thatched cottages of farmers' tenants in the fields, and there are many children playing by the roadside. Horses can't run fast in this condition. They are not in a hurry, and there is no need to trample the farmland. What's more, this piece of fertile land is likely to belong to the Cao family.

    One of the servants dismounted, went to the well in the village, filled a water bag with water, and returned it to the middle-aged man in charge. The middle-aged man raised his head boldly, enjoying the coolness and sweetness of the well water.

    "The sun is high, when we pass this village, let's find a place to have lunch."

    The back is a uniform voice: "No."

    The youngest servant also found coins from his body and said with a smile, "If you can buy meat from the farmer's house, that would be great."

    The middle-aged man waved his hand: "Cao Gong's son Cao Jugao is nearby to keep filial piety. He is cowardly, I have never liked it, it is better not to disturb him."

    If you don't like the owner of this land, you can only find a shade of tree to eat dry food and drink cold water. However, the weather is friendly in spring, and it is a bit pleasant to have a picnic in the warm wind.

    I was eating when I heard the little knight shouting: "Look at those children playing, there are some reasons for arranging troops."

    The author has something to say: Note [1]: Fried steel method. The pig iron water is repeatedly stirred in the crucible, so that the carbon element in it reacts with the oxygen and is discharged into carbon monoxide gas, so as to obtain wrought iron or steel with a lower carbon content than pig iron.

    【2】: Filling method. Pig iron has high carbon content (brittle, hard), wrought iron has low carbon content (tough, soft), and steel has a carbon content between pig iron and wrought iron, so it is hard and tough. Simply put, the steel pouring method is to pour pig iron water on the wrought iron block, mix and heat it to make the carbon element transfer from the pig iron part to the wrought iron part, and balance the carbon content of the two to obtain steel.