"Qingque, you've lost weight."

Fang Yiai looked at Li Tai and said.

The little fat man immediately looked aggrieved, and said pitifully: "Master, you can see that the disciple has been so tired lately that he hasn't been able to rest well." ”

Li Tai deliberately sold miserably and pretended to be pitiful, he hoped that the master would feel sorry for him and take the initiative to take over the position of training teacher, which would be better.

However, the idea is beautiful, but the reality is cruel.

Fang Yiai patted him on the shoulder, gave him an encouraging look, and said, "Yes, it's good to lose weight, continue to keep it, and take good care of you for the teacher." ”

Hearing this, Li Tai was petrified on the spot, and looked at the master's bereaved love stupidly, and sure enough, ...... The Master is still the same Master, and it hasn't changed at all.

……

In the past two days, the good news has been one after another.

In the afternoon of this day, Yuan Liu, a craftsman who fired glass, came with good news that bubble-free glass was produced.

"Young master, it's a success! We succeeded! ”

This guy came in a hurry, cheering endlessly, he was so excited that he couldn't do it, but the others looked confused, and they didn't understand what the situation was for a while.

"Uncle Feng, you mean, you have fired glass that meets the standards?"

Fang Yiai almost didn't recognize him, his skin was darker than a month ago, and the position next to his mouth and nose on his face was a little whiter than before, which must have been caused by wearing a mask for a long time, which was mandatory for Fang Yiai.

Cheng Chumo and Changsun rushed at them, but they didn't think he was funny.

The main reason is that the village has seen a lot, and almost all the craftsmen working in front of the stove are like this.

"That's right, we're constantly improving, and now the glass that comes out of it doesn't have any bubbles at all." Influenced by the love of the house, the craftsmen also changed their words, and they are no longer called "glass".

"Let's go! Let's take a look. ”

The group walked to the courtyard, and Qiao'er understood that he couldn't stand the heat, so he immediately brought two smoothies.

Miscellaneous courtyard.

The glass-fired yard is hot as soon as you get closer.

The temperature in the neighborhood is much higher than outside, and all the yards that need to be boiled are built in this area......

In the corner of the small courtyard, there are piles of glass balls of various colors, all of which are the products of experiments.

Inside the blast furnace, the fire was blazing, the craftsmen were naked, beads of sweat were rolling down the dark spine, and the sweat towels around their necks were already soaked.

The little fat man stood not far from the mouth of the furnace, his face was red from the firelight, his clothes were already soaked, his eyes were unblinking, staring at the changes in the furnace, and the pen and paper in his hand were quickly recorded.

"Young master, look."

Yuan Liu's mind was lively, and he wouldn't let them wait, so he brought two pieces that had been refined in advance first, and let Fang Yiai take a look at them first.

It is two lumps similar to convex lenses, Fang Yiai took it and observed it carefully, and did not see a little bubble, although it still has a little color, but the color is very light and evenly distributed, which does not affect its permeability.

Due to the limitation of the quality of the container used during cooling, the surface of the convex lens is not smooth and needs to be polished.

However, as long as the glass meets the standard, the rest of the steps are simple.

On the side, Changsun Chong and Cheng Chumo are also very rare.

The eldest grandson Chong was more polite, Cheng Chumo would not be polite to him, and stretched out his hand to ask Fang Yiai for it, "Fang Er will show me." ”

Fang Yiai smiled and handed it out.

Cheng Chumo held the glass ball, looked at it in front of him, straightened his arm and looked at it, couldn't put it down, and admired in surprise, "It's really transparent." ”

Eldest Sun Chong's eyes were also attracted, and he looked at it with wide eyes, "It's so crystal clear!" Today was an eye-opener. ”

Cheng Chuliang looked hot on the side, and said to Cheng Chumo: "Brother, I'll take a look." ”

Cheng Chumo threw it over, he wouldn't be polite to Fang Yiai, and directly asked him, "Fang Er, I want this piece of glass." ”

"There's a lot of this stuff in the future, you have to take it."

Fang Yiai waved his hand proudly, he didn't pay attention to it at all, this thing was worthless, and then he thought of something, and said with a smile: "This glass came in time, and when you go on the expedition, I will give you a gift." ”

The things invented by Fang Yiai must be very extraordinary, Cheng Chu Mo rubbed his hands and couldn't wait to ask: "What gift?" ”

"Secrecy for now."

"Master."

At this time, a new furnace of glass came out, and Li Tai also rested and came over to say hello to Fang Yiai. Fang Yiai handed over the smoothie in his hand, which had already turned into ice water, "Drink a little to relieve the heat." ”

Li Tai raised his head and took a big sip, Fang Yiai looked at his booklet and asked, "Write it all down." ”

The little fat man nodded, showing a proud expression.

The glass is slowly cooled down through a series of processes such as quenching and cooling, and several rough convex lenses are fired out in this way.

At this moment, Sun Simiao came in a hurry, and Fang Yiai got the news and notified him as soon as possible.

"Fang boy, I heard that the glass has been made?"

"Yes, Daoist, please take a look."

Sun Simiao took a closer look, nodded and praised: "It is indeed extraordinary, it is as thorough as water!" When was the microscope built? ”

"Dao Chief, please rest assured, this glass is successfully fired, and after that, things will be simple, and it will be made soon." Fang Yiai smiled and said, in other matters, it is rare to see Sun Daochang so eager.

"Okay, I'm waiting for your news."

To appease Sun Simiao, it is the reward of the craftsmen, and they will all be rewarded according to the previous example.

He also issued a new task, "The glass still needs to be improved, and the next part of the people to do this should be really clear as water, without any color." ”

"No!"

The craftsmen promised in unison, and they had just received a rich reward, all of them as if they had been beaten with chicken blood.

Fang Yiai continued to arrange: "Divide a part of the people to make flat glass, smooth and smooth like the surface of water, after the production, there will be a heavy reward!" ”

What he really has is this flat glass!

The doors and windows of the primary school and the greenhouses that will start construction immediately all need flat glass, as well as the production of mirrors, which is a big killer to make money.

He remembered the information he had read in his previous life, how popular the glass mirror was, and the producer actually moved to a small island to produce it for the sake of secrecy.

The glass was successfully fired, and with the craftsmanship of ancient craftsmen, it was not difficult to think of flat glass.

……

After receiving the reward, the craftsmen worked more energetically, and the courtyard was in full swing.

Fang Yiai took a few pieces of glass and found a craftsman to polish it before making a microscope.

Now, he still wants to make a few pairs of telescopes, and he has promised Cheng Chumo.

Although the Tang Dynasty is now difficult to defeat in the world, the battlefield is changing rapidly, and it is inevitable that there will be dangers.

Cheng Chumo will not go out with the army in the near future, and the time is a little tight!

In ancient times, there was no shortage of polishing technology, and the copper mirror also needed to be polished before it could shine a human figure, but it was just ...... Don't know if it's suitable for glass?

The technology is the same, the main thing is that the polishing powder is different.

However, this is what the craftsmen have to study, and he only cares about the end result.