I was engaged in infrastructure construction in the Han Dynasty [Transmigration Book]

Huo Guang's so-called still competing with the sand is actually not so accurate. After all, he has already made colored glaze before, and the rest is to keep improving the formula.

It is still useful to eliminate iron impurities before, at least the glass is not so green, but such a simple and crude method cannot be removed too thoroughly.

Anyway, Liu Tan now knows what contentment is, and he is already very satisfied with this transparency.

What remains is how to make large flat glass.

According to Liu Tan's thinking, isn't it enough to pour the glass melt into the model and try to keep the model as flat as possible when the glass cools down?

However, after the craftsman made it according to what he said, Liu Tan saw something in it that was enough to give him nightmares—bubbles.

Liu Tan couldn't help having a headache, feeling that he really had an indissoluble bond with this thing.

But this defoaming is obviously much more difficult than making bricks before. The brick mud can be trampled by animals or even stone mills to eliminate the air bubbles inside, but the glass is liquid before cooling, and it is still a very high temperature liquid.

Liu Tan thought about all kinds of knowledge from turning the mold when he was playing with the model, and finally decided to use two methods. The first is stirring, but it is not easy to stir at high temperature, so he can only simply remove some air bubbles, and then blow bubble method.

A large bubble is blown from the bottom of the glass melting pool with a metal tube, and the large bubble will eliminate or carry away the small bubble during its rise.

These two methods can reduce the air bubbles, but they are only reduced. If you want no air bubbles, you must make them small.

What Liu Tan originally wanted was a one-piece floor-to-ceiling glass window. In fact, those craftsmen were lucky enough to make two particularly large ones.

Liu Tan happily planned to replace these two pieces of glass in the main hall, but during the replacement process, although the craftsmen had been careful, they didn't know what went wrong. Anyway, one of the glass shattered all over the place. Two craftsmen were injured.

Fortunately, they were all slightly injured. Although it looked like there were many wounds, they were not fatal.

The craftsmen were trembling, knowing how much Liu Tan liked the two pieces of flat glass, even if the two pieces of glass were not so expensive, what would they do if the king of the Northern Realm got angry?

It's just that the King of the North didn't get angry. The King of the North just realized that he had overlooked a very important issue - most of the glass windows in later generations were made of toughened glass, which was only so strong when he was very young. little impression.

Ordinary glass, especially the glass he made newly, must have a lot of ingredients missing in the middle, so it is very fragile, and the bigger and thinner it is, the more fragile it will be.

As soon as he came over, he saw the craftsmen kneeling on the glass shards all over the floor, and he was startled: "What are you doing? Get up, get up, this matter..."

"Your Highness..." Miao Rui stood up and said, "These people did not work properly and caused losses to His Highness. This was because His Highness was not there at the time. If His Highness's consequences are unimaginable, we should fine them three months' worth of money as an example."

Liu Tan glanced at Miao Rui, but he didn't object, and those craftsmen were also very grateful, and couldn't help but want to kowtow.

Liu Tan quickly stopped them: "Hurry up and tidy up here."

After speaking, he turned his head and went straight to the study. This matter was indeed his negligence, so he didn't want to punish these craftsmen.

But he also understood what Miao Rui meant. These people did cause losses, and they made mistakes in operation, so they must be punished.

Even if Liu Tan said that this matter had nothing to do with them, Miao Rui might still insist.

The royal palace in the northern border still needs to be clearly rewarded and punished.

Well, since there are clear rewards and punishments, then there must be rewards for punishments.

Liu Tan thought that as long as they get out the tempered glass, giving them enough rewards will make up for this problem.

It's just...tempered glass, as the name suggests, is to temper the glass, but this treatment... really stumps Liu Tan.

He intends to literally have people add molten steel, so the glass furnace is almost scrapped.

Liu Tan: ...

Is it necessary to use some machine for tempering?It shouldn't be.

Later, he tried to reduce the proportion of molten steel, but this time he did not fry it, but the problem is that after adding molten steel, the glass will become very cloudy and green again.

Liu Tan felt that the eyes of the craftsmen looking at him seemed to reveal their true thoughts: Isn't this just looking for something?

After all, the iron impurities inside were removed with magnets on the front feet, and molten steel was added to the back feet. If it weren't for the water in the brain, I probably couldn't think of such a way.

However, Liu Tan will never admit that his brain is flooded, so... tempered glass may be just a name, but it is not actually adding steel to it.

So here comes the question... If the experiment cannot be carried out in a literal sense, how to do it?

The above is the reason why Liu Tan competes with Shazi.

In the end, this problem was not solved by him, but by the public loser.

As for the solution, they accidentally discovered that Liu Tan once said that tempered glass is more resistant to impact, even if it is broken, it will be broken into glass beads that do not hurt people, so the craftsmen tried many methods, smashing them while trying, Anyway, the big deal is to smash it and re-smelt it again, and there is no other loss except the loss of coal.

And Liu Tan once waved his hand and told them to try it freely.

At that time, people from the public loser came to answer Liu Tan about the academy, and when they came, Liu Tan was worrying about the glass kiln.

This time, Gongshu also came over as a representative. Liu Tan saw that his attitude was okay, but his expression was not as relaxed as before, and his brows were even slightly wrinkled.

Gongshu couldn't hold back and asked, "What are you doing, Your Highness?"

Liu Tan glanced at him and said, "It's nothing, the newly refined colored glaze is too fragile, I want to see how to make it less fragile."

Gongshu didn't ask Liu Tan how he made the colored glaze, but he couldn't help laughing when he heard him say that: "Your Highness should have asked us earlier."

Liu Tan was a little surprised: "You public losers can still make colored glaze?"

Gongshu also said: "I have to find something to earn a living. I have a big family."

Liu Tan thought about it too. No one in the Gongshu family was an official before, so they naturally had to find ways to make money, and they were unwilling to farm the land, so they naturally wanted to find some livelihood business.

However, Gongshu also said this, which means that the Gongshu family has a solution. The solution may not be the same as what he thought, but he can refer to it. It's okay to be vulnerable, too.

Thinking of this, Liu Tan took Gongshu to the study and sat down and said, "I've never heard of a method to strengthen glass before. I think it should be the exclusive secret technique of Gongshu's family. I don't want to take your things for nothing. What do you want? Say, what I can give, I will naturally give."

After hearing this, Gongshu's heart jumped wildly, he couldn't help swallowing and said: "Your Highness promised us before that someone from Gongshu's family can be an official, is it true?"

Liu Tan was stunned for a moment, oh, yes, he said that before, Liu Che's arrival made him almost forget about it.

However, after spending the past few days with Liu Che, he can't do anything else, and his face is much thicker than before.

Even if he forgot at this moment, he started to blame without any burden: "I have discussed with Huo Xiang before, and it is indeed possible to have an official, but there is only one person in the Gongshu family who can be an official. Have you figured it out?"

Gongshu also plucked up his courage and said, "Of course, the Patriarch is also my father, okay?"

Liu Tan was very straightforward: "He can come if he wants to."

Gongshu also couldn't wait to say: "Okay, I'll write a letter to my father immediately, so that he can come here soon. As for some techniques about Liuli, please wait a while, Your Highness, I have to go back and look for it."

Liu Tan nodded: "Yes."

Then he saw Gongshuyi leave in a hurry, and the expression on his face was indescribable for a moment: This guy wasn't so impatient before?How much does the public loser want this official position?He left without even asking about the treatment!

He had several plans in his mind just now to argue with Gong Shuyi, but he never expected that none of them came in handy!

For a moment, Liu Tan even thought of using the urgent characteristics of the Gongshu family to dig out more benefits. After all, in such a large family, only one official cannot lead the entire family.

But soon he felt that he was a little unkind. The Gongshu family seemed to be honest people, so it seemed inappropriate for him to cheat the other party here.

Liu Tangang sighed, and thought about giving him a Ministry of Industry after the Patriarch of the Gongshu family came over...wait...wait.

Liu Tan suddenly thought of a very important question.

That is, he just told Gongshuyi that he had discussed with Huo Guang, but in fact Huo Guang might not know about it at all!

When Liu Tan thought of this, he immediately said in a hurry: "Hurry up, invite Mr. Huo over, and say that we have something important to discuss!"

The Gongshu family will definitely not be willing to be only the officials of the princes and kings. It is basically very difficult for the officials of the princes and kings to be promoted to the center. Liu Tan is still counting on some good things from the Gongshu family, so naturally he must give them good A little treat.

So when Huo Guang came over, he saw his Royal Highness of the Northern Realm smiling and said, "Ah Guang, can we discuss something?"

Huo Guang raised his eyelids: "Did Your Highness cause trouble again?"

Liu Tan choked: "Who said that? Don't guess randomly, and what does that mean?"

Huo Guang couldn't hold back and said coldly: "Your Highness, if you look in the mirror and see your expression now, you will know why I said that."

There is no way, this smile seems to be full of guilt. The most important thing is that Liu Tan has always been very polite to him, and rarely calls him by his name. Today is so abnormal, it is really hard for Huo Guang not to think about it!