Li Yi was bored and remembered the warm-hearted Li Er. The first Han acquaintance, Li Er, helped to treat Su Li and gave clothes. Seeing Li Er hoeing the ground with the most primitive tool, Li Yi wanted to give him a pair of plough sticks at that time. At the beginning, I had no money, so I had to give up, but now that my waist is hard, I should repay my kindness! When Li Yi thought of this, he shouted: "Third brother! ”

Li San agreed: "It's coming!" So he trotted all the way over. Li San stood respectfully in front of Li Yi and said, "The eldest brother just commands, and the younger brother will definitely live up to the trust!" ”

Li Yi said with a smile: "My brother can't do it for me, my brother needs to go in person, I only ask one thing, is there a skilled carpenter master in Taiping Village, and where does his family live?" ”

Li San said with a smile on his face: "Big brother, you really asked, my brother knows Taiping Village well, if you say that the craftsman is good, Wang Heng is second to none." Taiping Village is not big, and Li Yi easily found Wang Heng according to Li San's guidance.

Wang Heng is Wang Ren's brother, and he has heard his brother mention that he has a new master, so he has great respect for Li Yi. The two said a few polite words, and Li Yi was let into the house.

Li Yi looked at the furniture displayed on both sides, and saw that it was well-made, so he made up his mind: this is it! Li Yi took out the drawings he had drawn and handed them to Wang Heng with both hands.

Although Wang Heng knew a few words, he couldn't help but be confused when he held the three views drawn by Li Yi. Seeing Wang Heng's brows, staring at the drawings but not getting the point. Li Yi smiled slightly, and patiently explained to him.

Dealing with wood all day long has made Wang Heng form a strong sense of three-dimensionality, and his intelligence is comparable to Li Yi. After a patient and meticulous explanation, Wang Heng's mind quickly appeared with a real thing, Li Yi smiled and patted him on the shoulder and said, "Of the masters I have ever seen, Brother Wang is the most ingenious!" ”

After receiving Li Yi's praise, Wang Heng opened his eyes and smiled: "Thank you brother Xian for looking at it!" Wang Heng's rough work is not elegant, just a mouthful of food! ”

The social status of the farmer and the craftsman is low, but this is only the opinion of the scholar class, and Li Yi certainly has another scale in his heart. Li Yi does not have the strength to challenge the rules of society at present, so he shook his head helplessly and talked about the price with Wang Heng.

Wang Heng had a full schedule, but for the sake of Wang Ren's relationship, he not only made an exception, but also proposed not to charge the cost of work. Knowing that Wang Heng was saying kind words, he still paid the deposit.

Leaving Wang Heng's house, Li Yi went to find the blacksmith Zhao Neng again. Zhao Neng is not as good as Wang Heng, and the shape of the ploughshare is very complicated, Li Yi described that for a long time there was no result, and he could only stay and answer Zhao Neng's doubts at any time.

Since he made four guns, Zhao Neng has not yet received a job, and he has to re-light the fire, and he has been busy for a while before he burns an iron ingot red. Due to the bleak business, Zhao Neng's helper had already been dismissed, and seeing that he was busy alone, Li Yi couldn't bear it, so he helped him work together.

The only combustion tools for the stove are the blowing torch and the puff fan, although the blowing torch is concentrated, but it needs to continuously agitate the cheeks, and after only a while, Li Yi feels unbearable. After changing to a pu fan, due to the dispersion of the wind, the effect of combustion support is not good, and the dust is blown all over the house.

Li Yi, who was tired and hot, thought of a simple combustion tool air box. The bellows are the predecessor of the blower, a rectangular wooden bellows with a square wooden piston, which is bound with dense chicken feathers and has good air tightness. The end of the piston is a connecting rod, which extends out of the box through a hole in the front end, and the handle is set at the end. A backstop air inlet is set before and after the bellows, and a air supply pipe is provided under the measurement of the bellows, which is connected with the stove or stove.

The working principle of the bellows is similar to that of a pump, which drives the piston movement by pulling the connecting rod back and forth, and continuously sends the unprecedented bellows into the stove or stove to support combustion.

When Li Yi was a child, the wind box was the main force in the small courtyard of the farmhouse. The air box has the advantages of low cost, long service life, no maintenance and operation costs, and green environmental protection. The disadvantage of the air box is that it must occupy labor and require a certain amount of physical strength.

handed over the drawn drawings to Wang Heng, and this time with a little bit of Li Yi, Wang Heng knew it. Li Yi said with a smile: "I'm afraid that Brother Wang will have to make some adjustments temporarily, and drive out the wind box as soon as possible, although it is difficult for some strong people, but once the wind box is born, Brother Wang's business will be on fire!" ”

Wang Heng thought to himself: In recent years, the villagers have been exploited by the Hu people, which has affected their business, and only spring plowing and sowing have been popular in the past few days. Wang Heng pondered for a moment, he saw a business opportunity, so he nodded and said: "Originally, there was a young man named Liu San, who kept clamoring for me to accept him as an apprentice, but because of the instability of the job, I didn't dare to agree to him. Liu San, this kid has a good brain, and his legs and feet are also diligent, whenever I can't be busy, he runs to help me with this and that, and his mouth is also very sweet, which makes it difficult for me to shirk. When I call Liu San back from the field, I will send the wind box to Zhao Neng's blacksmith shop in the afternoon. ”

Sure enough, a seventeen or eighteen-year-old young man carried the wind box to the blacksmith shop, and Li Yi took the wind box from Liu San's hand and aimed the air supply pipe at the temporarily dug furnace hole. As Li Yi twitched the lever, air was continuously supplied into the furnace.

The news of the advent of the wind box spread, and the villagers of Taiping Village rushed to Zhao Neng's blacksmith shop, and when they saw that the wind box was really easy to use, the middle and upper class residents rushed to Wang Heng's house to order.

Blacksmith Zhao Neng's work efficiency has been improved, but Li Yi is not satisfied with the status quo, he is pulling the wind box while pondering. After a period of observation, Li Yi found that this kind of farmhouse air box is too simple, whether it is pulling or pushing, as long as the piston is more than half of the stroke, the air supply tube not only can not blow the air, but also sucks the flue gas mixture in the iron furnace back to the bellows, not only can not continue to support combustion, but also extract part of the flue gas, so that the oxygen content of the combustible gas decreases. Half of the time is useless, and more than half of the efficiency is lost. After careful consideration, he made certain improvements to the air box, removing the original air supply pipe and sealing the original hole. Then open a hole in the front and back of the same side, install a backstop door outside the hole, and then seal the front and rear air outlets in the newly made air duct, and the middle hole is equipped with a air supply pipe.

Li Yi came to Wang Heng's house again, and said the idea of improvement, Wang Heng took a wind box that was about to be completed, and after a busy time between the master and apprentice, the new wind box was born. Liu San carried the wind box and accompanied Li Yi to the blacksmith shop. After testing, the efficiency of the improved air box has been more than doubled, and more impressively, the air output has been doubled with the same amount of physical effort, and the air quality provided has also been guaranteed. The furnace temperature of iron making has been greatly improved, and the quality of steel has also been improved.

Li Yi took the ploughshare, Zhao Neng got the wind box, and he only charged half of the fee. Wang Heng finished assembling the ploughstick, and in order to thank Li Yi for the business opportunities he brought him, Wang Heng returned all the money to Li Yi. Li Yi couldn't refuse, and thought in his heart: Even if it's a patent transfer fee! Then he put the money in his arms with peace of mind.

Carrying a plough stick out of Taiping Village, after walking for more than two hours, Li Yi met Li Er in the field. Needless to say, when Li Er learned that his eldest brother gave him a plow stick, he was really ecstatic, and he couldn't help but hug Li Yi affectionately, and couldn't put it down.

Seeing Li Yi's second-hand dancing appearance, Li Yi was also full of joy, and he told Li Erdao: "With this pair of plough sticks, you can borrow two more animals, and plant the field while the moisture is still there!" ”

Li Er was so happy that he couldn't close his mouth, and he said busily: "Big brother, don't bother, these little brothers will take care of themselves!" He looked at the sun again and said, "It's almost noon, big brother come home with me." ”

Li Yi smiled: "I'm not busy, it's still early, I'll tell you something first." Li Yi said the words that had been held in his stomach for a few days, and Li Er was obedient to Li Yi, and he nodded frequently.

I don't know if Li Er will forget, Li Yi told again: "Apply more fertilizer, weeding frequently, plough the ground deeply, and the idea is ...... with appropriate plant spacing and row spacing."

Seeing that Li Yi kept babbling, Li Er nodded and said, "Don't worry, eldest brother, little brother has already kept it in mind!" ”

Li Yi stared at Li Er for a long time, only to see that he was at a loss, Li Yi sighed and said: "Brother, my brother is going to go far away, I don't know when I will come back, but don't worry, brother, as long as my brother comes back one day, I will come to see you, brother!" Li Yi said that his heart was sour, his eyes were already red, and he tried his best to hold back the tears from flowing out.

Li Er's face showed a look of surprise, and he stumbled and said, "Big brother is ...... Where to go? Why bother for a while and let ...... The younger brother and sister make a mouthful of food, and the eldest brother eats before leaving. ”

Li Yi shook his head and said: "I'm still in a hurry, so I don't need to eat, but my brother must do what I say, and I will definitely get more food in the autumn. ”

Li Er smiled honestly and nodded, he saw that he couldn't keep it, so he had to say goodbye to Li Yi. Li Yi turned around, he couldn't hold back his tears anymore, he was afraid that Li Er would find out, so he hurriedly walked a few steps before he dared to wipe it with his sleeve. As the saying goes: Men don't flick when they have tears, but they don't get to the sad place. parting with Li Er aroused his gloomy sadness. He thought of his wife and children, as well as his parents and his elderly grandmother, and he feared that he had said goodbye to them. Since then, I can only face the world alone and work hard in loneliness!

Turning back to Taiping Village, I waited until the early morning of the fourth day, but there was still no shadow of Wang Ren, Liu Ping, and Song Zhi. Li Yi repeatedly asked Xue Xin, but he hesitated and insisted that Wang Ren and others would not let go when they went to buy horses. Li Yi was suspicious in his heart, he thought to himself: It must be because the horse price is expensive, Wang Ren temporarily changed his mind, and it was not easy to explain it to himself, so he deliberately hid out.

Li Yi resolutely wanted to leave Taiping Village, he stared at Xue Xin and said: "Master is leaving, you can't be lazy, you waste your martial arts, Master doesn't agree." In addition to practicing martial arts, you also have to know more words, the master will always return to Taiping Village one day, and he can't get a qualified answer sheet, but you can accept it! ”

Xue Xin smiled honestly, he knew in his heart that the master was kind-hearted and soft-faced, so he would not trouble him. Li Yi told Li Sandao again: "The eldest brother is leaving, and the third brother must also practice martial arts diligently, and wait for the elder brother to come back and see his brother!" ”

No one has ever looked at Li San squarely, seeing that Li Yi is like a brother to him, Li San is moved, he took out dozens of five-baht coins he had accumulated on weekdays, and choked up: "It's good to be at home for a thousand days, but it's hard to go out!" The younger brother only has this money, please bring it with the eldest brother! This sentence is often on the lips of merchants, so it was borrowed by Li San.

Li Yi received limited money from Wang Ren, and used some of it. Seeing that although Li Sanqian was not much, it was also a thought, Li Yi no longer shirked, so he took it and put it in his arms. Xue Xin also took out his money bag, which was even less than Li San's. It is the people's heart that the melon seeds are not full, and Li Yi accepted the heart of the apprentice.