Hua Qingxue held the glass in her hand and rubbed it carefully.

This glass is spherical, round belly, one side has a small mouth that is only one circle larger than the copper coin, the wall of the cup is uniform, and the transparency is very high, you can see that there are many bubbles in the inner layer, although it cannot be compared with modern glass, but it is much brighter than the two glassware brought by Master Song.

"How did you do that?" Hua Qingxue asked.

Su Shaowen was a little nervous and replied, "I'...... I added river sand to it......"

It turned out to be river sand.

Hua Qingxue immediately understood that the main ingredient of river sand is quartz, and quartz is one of the main raw materials for making glass.

The reason why Hua Qingxue said it was a misunderstanding just now was because she misremembered the composition of the glass.

Although there was glass in ancient times, it could only make some opaque lead barium glass - lead barium glass was bright and gorgeous, whether it was an ornament or jewelry, it was very popular, such glass, fragile and not heat-resistant, not resistant to sudden cold and heat, can only be used as decorations and jewelry, not as a container.

That's why Hua Qingxue kept telling Master Song that he couldn't do it.

It's not about the technique, it's about the raw material.

Originally, Hua Qingxue was already disappointed, but she didn't expect that this little apprentice of Master Song would think about making such a spherical glass with such a small opening.

The glass bottle made by Master Song has a small bottle mouth, but if you look closely, you will find that the bottleneck and the bottle body are two parts, which are glued together after they are done, and the ball bottle made by Su Shaowen is a whole, which is very valuable.

Hua Qingxue asked him again: "How did you make the opening so small?" ”

In ancient times, glass was made by melting and casting, and there was no way to make such a small opening.

The melting casting method is to grind various raw materials for making glass into powder, put them into an earthen mold, melt and shape the glass after high-temperature calcination, remove the mold after cooling, and then polish the whole body.

This method is actually the method of processing bronzes, the cost is very high, the delicacy of the shape depends on the delicacy of the mold, sometimes a glass handicraft, need to carve dozens of different molds, and then glue one by one after demolding, so it is impossible to make this effect of hollow core.

Su Shaowen didn't dare to hide it, and replied cautiously: "I first made a glass ball, put it in when the molten glass cooled down, hang it with a metal wire, wait for the liquid glass to solidify completely, and then break the glass ball inside little by little along the wire." ”

Hua Qingxue's eyes widened in surprise, she didn't expect Su Shaowen to use such a tricky method!

He put the glass ball into the liquid glass, squeezed out the shape of the glass, and when the glass cooled and solidified, the glass ball inside could not be taken out! So he smashed the glass balls inside, and then removed the broken glass slag little by little!

It's a test of strength, angle, and skill! Because if you are not careful, you will break the outer glass!

Hua Qingxue held the glass and fell into deep thought.

It is obviously impossible to directly ask the glassmaker to make the test tubes, beakers, and distillation flasks he wants.

Because she needed soda-lime glass that could withstand high temperatures, not brilliantly colored lead-barium glass.

Therefore, the first thing she has to solve is the problem of raw materials.

Secondly, there is the production process.

The casting method is obviously not advisable, and the best way to make the container is the blowing method, which does not require the engraving model, is low in cost and high in output, and is a common method used by Western glassmakers.

Hua Qingxue was engrossed, and Su Shaowen stood aside, worried in his heart, but he didn't dare to disturb him.

Liang Wensheng walked in, and Hua Qingxue came back to her senses.

"Master, the people have been sent away." Liang Wensheng glanced at Su Shaowen with a smile and asked, "How do you arrange these little brothers?" ”

Su Shaowen was named, his face flushed, as if he was embarrassed.

Hua Qingxue thought for a while, looked at Su Shaowen, and said with a smile: "Let's stay here first, and then start work when the crucible kiln is ready." ”

Su Shaowen asked a little stiffly: "...... What do I need to do? ”

"Make glass." Hua Qingxue smiled, "But it will be a little different from your previous method, I have a new set of methods here, but you need to figure it out and learn it yourself." ”

Liang Wensheng was stunned for a moment, "Master, aren't you going to teach him?" ”

"I can't teach." Hua Qingxue sighed helplessly, "I only know the method, but I can't." ”

It's like knowing how to ride a bicycle, but if you really go on a bike, you won't be able to learn it without falling a few times.

The glass blowing method is the same, Hua Qingxue knows the method and understands the principle, but if she really lets her blow it, she may not be able to compare to Su Shaowen.

"I—I'm willing to learn!" Su Shaowen said with a red face.

"I'll learn too!" Liang Wensheng hurriedly interjected.

Hua Qingxue laughed, "The firearms battalion needs you to keep an eye on it, it is best to complete it before autumn, and when it is completed, we will purify the raw materials, improve the earth-shaking thunder, and make rockets, artillery, and muskets...... It's going to be busy. ”

Liang Wensheng grinned when he heard this, his eyes were full of yearning.

Hua Qingxue handed Su Shaowen over to Liang Wensheng, and then went to check the recent progress of the firearms battalion, looking at the buildings that had taken shape, she was both expectant and a little stunned.

All attempts will be a process of success from countless failures.

Even though I have been mentally prepared countless times, I still worry about failure......

She didn't see the glass she wanted today, and she was a little disappointed.

Because of her mistake, she forgot the difference between the two glasses, and without thinking too much, she asked Fu Tingye to help her inquire and invite people, but she worked in vain.

Alas......

Hua Qingxue can only hope for that little apprentice now, since he has a strong research ability, he hopes to master the glassblowing method as soon as possible......

In fact, in Hua Qingxue's memory, a skilled glassblowing master can't be practiced in two or three years.

As soon as she thought of this, Hua Qingxue became even more depressed.

Because she couldn't wait that long......

……

The carriage gurgled forward, and the sun outside was still burning.

Hua Qingxue went out of the door, only to feel sweaty, sticky, and uncomfortable.

The mood is getting more and more depressed.

She just wants to go home as soon as possible, take off this layer of sweaty clothes, and soak in the cold water!

The leading guard outside the carriage was called Wu Zhuo, and suddenly asked her: "Miss Hua, there is a fork in the road ahead, do you want to go to the camp?" ”

Hua Qingxue was slightly stunned.

The guards obviously wanted her to go and see the general.

In the past, Fu Tingye would go back to the city every two or three days to see Hua Qingxue, but in the past few days, I don't know if it is because of the busy military affairs, Hua Qingxue has not seen Fu Tingye.

Hua Qingxue thought about it, it is difficult to make a trip, so let's go and see it......

- When you fall in love, you should have a relationship, it's always bad that he comes to see her all the time, and she should go to see him occasionally.

The corners of Hua Qingxue's mouth couldn't help but curl, thinking to herself, would she surprise him if she suddenly went to see him?

When the carriage arrived at the Qingzhou camp, Hua Qingxue went directly to Fu Tingye's camp, but there was no one to see.

"Miss Hua, the general has gone to the school field." The soldiers outside the tent told her.

Going to school? When he goes to school on this hot day, isn't he afraid of prickly heat?

Hua Qingxue went to the school again.

The barracks were very large, and Hua Qingxue walked all the way over, sweating again.

On the way, we passed a camp tent, and there were many soldiers in different costumes guarding the periphery, which did not look like soldiers from Daqi.

Hua Qingxue felt strange and couldn't help but take a look.

"Who are those?" She asked Wu Zhuo, the guard beside her.

"It's a soldier of Nanzhao."

Even if she knew the answer, the doubts in her heart did not decrease at all, because she didn't know what Nanzhao was at all......

When I arrived at the school ground, I found that there were more soldiers in Nanzhao, and the soldiers of Daqi were guarding near the school field, and these soldiers were like trees under the scorching sun, not moving at all.

There are wooden shelves at the east and west ends of the school field, on which various weapons are displayed, and in the center of the school field, a man and a woman are competing.

The man was tall and burly, obviously Fu Tingye.

The woman was tall and delicate, dressed in an alien costume, with yellow gold plates on her cuffs and waist, reflecting a dazzling light as her movements changed, which was very eye-catching.

Far away, Hua Qingxue couldn't see the woman's appearance clearly, just with that hot body, she felt like a gorgeous girl.

Hua Qingxue stood on the side and watched silently for a while.

Fu Tingye's weapon was a long knife, and the woman's weapon was two full moon scimitars, and the two practiced on the school ground, making a metallic sound of weapons colliding from time to time.

Fu Tingye's long knife slashed horizontally, and the woman's waist was as sensitive as a snake, and she dodged it in an instant! Throw out your own scimitar at the same time!

Fu Tingye flashed sideways, and the next moment the handle hit the woman's wrist directly, and the scimitar in her right hand immediately came out-

Sometimes the soldiers on the side cheered.

Hua Qingxue frowned.

She couldn't understand the moves of the two of them, she could only roughly see that Fu Tingye had a slight advantage, but the woman was extremely resilient, the faster the attack, even if she was knocked down with a knife, she didn't have the slightest intention of backing down.

Until the woman had a scimitar left and was directly cut off by Fu Tingye!

Her body fell weightlessly, and she fell heavily on the school field, splashing gray-white dust.

Fu Tingye reached out to help her up, but she seemed to be injured, staggered, and fell into Fu Tingye's arms-

Fu Tingye held her waist steadily, and two soldiers ran over from outside the school ground, one left and one right, and took the woman from Fu Tingye's arms.

"It's the princess of Nanzhao Kingdom, called Wu Xinyao, and it seems that she came here to ask for help from Daqi this time." Wu Zhuo, who was beside him, said to Hua Qingxue.

Hua Qingxue's gaze moved away from the big hand on Wu Xinyao's waist, and she nodded slowly, "Oh." ”

She turned away.

Wu Zhuo followed her and asked, "Miss Hua, aren't you going to see the general?" ”

"Huh?" Hua Qingxue said hesitantly, "Didn't you say that the princess of Nanzhao came to ask for help?" Since the general has something to do...... Then, I'll come back next time, and if I go now, I'll make trouble for him. ”

Wu Zhuo was sent by Fu Tingye to protect Hua Qingxue's safety, he had some thoughts, after thinking about it, he felt that Hua Qingxue was now like a general's secret weapon, and it was indeed not suitable to be casually exposed to outsiders, so he had no opinion at the moment.

Wu Zhuo, along with the other guards, sent Hua Qingxue back into the carriage and returned to Panshui.

Hua Qingxue sat alone in the carriage, holding a handkerchief in her hand and wiping the sweat on her face.

She felt stuffy and hot, her mood was inexplicably irritable, and from time to time she thought of Princess Nanzhao's soft waist, the slender arm wearing a jeweled armband, the gold flakes were shining brightly, and Fu Tingye's palm brushed over the honey-colored skin......

She pursed her lips, feeling even more uncomfortable......

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