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In Chang’an City, 5 minutes to the south, Li An is still busy researching the tempered glass technology. According to the previous life memory, the manufacturing process of tempered glass is not complicated. The tight cooling method is to use rapid cooling to make the glass prestress , Thereby greatly enhancing its nano temperature difference and nano impact performance.

In order to test this theory, Li An let the artisans use artificial methods to quickly cool the glass, and then, by tapping with a hard object, to determine the performance of this test glass.

“Minister Li, this Glassware is so precious, do you really want to smash it?”

The craftsman suspected that he had heard it wrong and asked quickly.

Li An nodded and said: “To smash it, first use a little less power, then gradually increase the strength, and smash it with a flat-headed mallet first.”

The craftsman took command, brought a flat-headed mallet, and smashed it against the finished Glassware without any damage.

“Add a little power.”

Li An continued to order.

“dong dong dong ……”

The craftsman gradually increased the strength and struck the Glassware, but already used a lot of power, but still failed to break the Glassware glass, even a little crack could not be seen.

“Okay, very good, this Glassware can resist the mallet’s attack, it is already very difficult to deal with, come, and replace it with a hammer.”

Li An is quite satisfied with the improved glass. At least, this performance is much stronger than the normal glass without treatment.

The craftsman picked up the hammer and smashed it against Glassware. There was no response. After increasing the power, the surface of Glassware cracked, but not at all broken.

“Continue to increase strength until the Glassware is completely smashed.”

Li An ordered loudly.

The craftsman took command and continued to increase the strength, smashing the surface of Glassware unbearably, but with a lot of power, he still failed to completely smash Glassware into pieces.

“Minister Li, we just blew it with a strong wind, this Glassware is so hard, no wonder it is called tempered Glassware, it is really amazing.”

The craftsmen were all stunned, lamenting the magic of creation.

Li An is also excited about 10000 points. The tempered glass test was successful. Next, he can safely change all the windows of the mansion to glass materials. In addition, he also wants to build an outdoor sun room that can withstand the wind to relax. When lying in the sun, in addition, the vegetable greenhouse can also be retrofitted with Glassware, tearing off the silk of the ceiling and replacing it with tempered Glassware.

“Glassware molds of these sizes need to be made more and made of steel. Glassware mirrors are only one-foot square mirrors, and there are two kinds of small Mirrors with large palms. Remember, Glassware mirrors cannot be made of steel. “

Li An took out a piece of paper and let the craftsman do it according to his requirements.

“Minister Li, this is too much. I’m afraid that it will be difficult to do well in a short time. There is only one blast furnace that can be used. There are no new apprentices who are recruited, and they can’t do it quickly.”

At present, only one Glassware blast furnace can be used in the processing plant, and the remaining 9 are still under construction. The demand for Li An is naturally difficult to fully meet, and the craftsmen feel very stressed.

“It’s okay, This Official didn’t urge you, just do it slowly, don’t be lazy.”

Li An freed the craftsmen from the stress and went to the Research & Development steam engine room to conduct further research on the steam engine.

After continuous research and improvement, the prototype of the steam engine has come out. After all, the principle of this thing is really too simple. If it is not the limitation of the strength of the material, it has already been made.

Of course, Li An also had to admire the Ji-hye and resilience of people of this era. Under such backward conditions, there are many things that Li An dare not hope much, but they are still made by these smart craftsmen, and According to the principles explained by Li An, they will think about the problem from another angle and solve the problems encountered, which surprises Li An.

The ancients were still very clever, like the historical miracles such as the Great Wall and the pyramids, how they were created under such backward conditions in ancient times has been a mystery, and even suspected that they were made by aliens.

Similarly, the craftsmen of Great Tang are also very clever, and they also have mastery of Sect’s Exclusive stunts unknown to later generations, which can solve many difficult problems, which is very beneficial for Li An to develop many later generations of science.

Many times, Li An just put forward a concept, and these craftsmen can immediately think of coping strategies, and these coping methods are not grasped by Li An, and are also knowledge that has not been learned in previous lives. Therefore, in the development process In the middle, Li An and these craftsmen learn from each other and progress each other. Both sides have learned a lot of knowledge that was not clear before.

Through such a long time of development, these craftsmen gradually want to understand the principle of the steam engine, and once successful, they can provide the huge traction to the iron wheel head, which will completely change the transportation conditions of the Great Tang Empire and greatly enhance the international influence of Great Tang. Powerful, and the thought of these, these craftsmen are also very excited, Research & Development’s enthusiasm is naturally higher.

According to the current development progress, Li An is confident that the test of the steam engine will be successful within half a year, and the steam locomotive that can be used will be successful within 2 years. In this way, the transportation status of Great Tang will be improved in quality, while steam All knowledge of locomotives is known only to Li An and a dozen craftsmen, and these dozens of craftsmen are people with a family. As long as they live a prosperous life, there is no possibility of escaping the Great Tang. As long as they master these craftsmen and steam locomotives Future technology will not leak.

In this development project, Li An can be excited for a long time every time it makes progress. After all, none of the inventions can match the steam locomotive. The beginning of the industrial revolution in the later generations began with the invention of the steam engine.

The time for spring ploughing soon came. The 100 old people in Great Tang are all busy with spring ploughing. Government officials at all levels are also busy managing issues related to spring ploughing.

Due to the arrival of spring farming, most of the people in the major mines returned to their homes to work in agriculture. The mining progress of the mines slowed down and the demand for gunpowder naturally declined. A large amount of finished black gunpowder was used to develop a variety of practical mechanical equipment for the rest of the time. Occasionally, I went to Imperial College of Learning to explain the pinyin related knowledge to the group of students. Of course, leisure was also a must.

When the spring ploughing was the busiest, Li An took the family on a carriage, and went out to the city under the protection of Duan Xiushi and other Yulin troops.

Going out in the spring, it can also be called outing, which is a very comfortable thing. It can cultivate people’s sentiments and make people feel comfortable. Of course, with Yan Ruyu and Cao’er, this feels even more Comfortable, of course, it would be better if Duan Xiushi and a dozen Yulinjun could disappear, Li An never liked light bulbs.

“Husband, the scenery here is so beautiful!”

Yan Ruyu hasn’t been out for a long time, he was excited when he entered Fan Chuan.

“The scenery here is so beautiful, and it is not as beautiful as my wife. Come, let Hufu enjoy it.”

Li An hugged Yan Ruyu and looked at Yan Ruyu’s cheek.

“Husband, don’t always be serious, is Cao’er still in the carriage?”

Yan Ruyu gently pushed away Li An.

“Wife, Cao’er is not an outsider, what does it matter?”

“Aiya, you hate it.”

“Wife, on the mountain in front, there is a pavilion, not equal to me. Let’s go up and enjoy the scenery! Standing on a high place, you can enjoy more scenery.”

Li An lifted the car curtain and saw a small gazebo on the mountain not far away.

“Husband, this is too high, but since Husband likes it, let’s climb up!”

Yan Ruyu readily agreed that if she turned against Li An everywhere, she knew that Li An would be upset, and besides, she also wanted to stand high and experience the taste of a glance at the many mountains that seem small.

After getting out of the carriage, Li An took Yan Ruyu and climbed to the top of the mountain. Cao’er followed closely. Duan Xiushi and the guards were divided into 2 roads, leading the way all the way, checking the situation, and the other way. Followed by, only at the request of Li An, they are separated by a relatively long distance, about 30 steps away, and it is difficult to hear softly.

“What’s wrong, Wife, can’t move?”

Seeing Yan Ruyu sweating as if he could not walk, Li An asked with concern.

“Husband, let’s take a break! Too tired.”

Yan Ruyu really couldn’t walk anymore. He took Li An’s arm and refused to walk.

“It’s only one third, and I can’t move. How can this be done? If it’s so intermittently climbing, it’s dark at the top of the mountain, and I will hold you for your husband.”

Li An said, holding Yan Ruyu in his arms and striding towards the top of the mountain.

“Master, Wife, go slowly, wait for me.”

Cao’er gasping for breath followed up, but how could a young Young Lady keep up with Li An’s pace, she could not keep up, and she felt abandoned.

“Husband, you slow down, the Cao Ren can’t keep up.”

Yan Ruyu felt distressed about her dowry and stopped Li An.

Li An smiled slightly and shouted down: “Cao’er, don’t worry, just crawl slowly, Master and Wife are waiting for you.”

After that, he continued striding to the top of the mountain, leaving the old Gao Cao’er Young Lady with a mouthful of mouth.

The scenery on the top of the mountain is more beautiful. Of course, the nearby scenery cannot be seen. What is beautiful is the scenery at the foot of the mountain. Standing in the pavilion and looking out, the mountain is covered with a layer of tender azure, full of the charm of life.

Farther away, there is a group of working farmers. The scattered farmers add a smart atmosphere to the fields, so that Li An, who stands at a high place, has a sense of superiority in pointing the rivers and mountains. The feeling is really very It ’s wonderful. No wonder everyone is greedy for power and wants to stand on a high place to look down on sentient beings. It feels really good and intoxicating.

“Husband, a lot of farmers are working in the distance! They are really hard!”

Yan Ruyu pointed to the farmer in the distance and said with emotion.

“Yes! They are all obediently and honestly 100 surnames, and the cornerstone of the Great Tang Empire. Without these 100 surnames, there would be no Great Tang Empire, but they are indeed the most and the most difficult group.”

Li An considers the issue from a higher perspective, and the Yan Ruyu said is somewhat incomprehensible.

“Husband, the two in front, seem to be women, do you look like it?”

Yan Ruyu looked towards a field that was not too far away, and pointed with his finger to what he saw.

Li An gave a glance, smiled slightly at the corner of his mouth, took out the telescope from his arms, stood behind Yan Ruyu and looked over, and found that they were simply 2 men, but their hair was not treated well, and they were far apart, so they would Let Yan Ruyu be wrong.

“Wife, that’s obviously two men. How could it be a woman? You read it wrong.”

Li An quickly put away the telescope and corrected it.

“No, it’s obviously a woman, dare you bet.”

Yan Ruyu believes in his judgment and bets.

“What if I lose?”

“What did Husband say?”

Li An crafty smiled and whispered: “If Wife loses, she will promise any request from me. I can’t regret it. If I lose, so is it?”

“Okay, that’s it.”

Yan Ruyu was full of confidence, paused, frowned: “Husband, that field is still far from the foot of the mountain. How can we prove that they are male or female? Do we have to run to see if I can run? Moved.”

“You don’t have to run over in person, it’s clear by looking at the glasses.”

Li An grinned and took out the telescope again from his arms and handed it to Yan Ruyu.

“Husband, what is this, called a telescope?”

Yan Ruyu obviously will not use it yet.

“Come, let Weifu teach you how to use it.”

Li An placed the telescope on Yan Ruyu’s right eye and pointed at the cultivated land in the distance.

“How about it, is it a man or a woman?”

Li An laughed worse.

“How could it be so clear.”

Yan Ruyu was completely shocked and forgot to bet on Li An.

“Wife, this is a telescope, you can see things far away, how did you lose.”

Li An said stiffly.

“No, Husband is ridiculous. Husband must have seen it through this telescope just now, so I can be sure that the two are men, which is not fair.”

Yan Ruyu suddenly felt like he was being fooled and caught Li An’s strategy.

“Wife, it’s not a shame for husband! Wife didn’t say that you can’t use a telescope! I don’t violate the rules when I use a telescope!”

Li An quibble with a smile.

“That line, let’s guess again, whether the pedestrian on the left side is male or female.”

Yan Ruyu was too lazy to argue with Li An and used the telescope directly to see a pedestrian and asked.

Li An laughed, took out a telescope from his arms, and glanced at it: “It’s a woman with a basket in her hand.”

“Wow, Husband, you still have one in your hand, and give it to me, too.”

Yan Ruyu snorted and snorted.

“Wife, the passerby stopped. Guess what the basket in her hand holds?”

Li An asked again with a smile.

Yan Ruyu glanced at it with a telescope, simply could not see clearly, only to see something in the basket, but could not see what it was.

“Husband, the things in this basket can’t be seen with the telescope!”

Yan Ruyu frowned, but saw Li An grinning badly, and immediately awakened: “Does Husband still have a telescope that can see farther?”


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