"Your Highness, are these ingredients right?"

Military War Office.

Wang Chong held the white sand and said to Zhao Xu.

Since the King of Yan explained the raw materials, he personally contacted merchants from Yanjun Trading Company and asked them to go to Daijun to sell white sand.

As for a large amount of soda ash, I have to go to Yuzhou. The journey is a bit long and I will not be able to come back in a few days.

So he bought some alkali from the local alkali vendors and wanted to develop the glass first.

"The raw materials are all right, has the heat storage room been built?" Zhao Xu asked.

The sand on Wang Chong's hand is milky white and translucent, and it is indeed quartz sand.

Only this sand can burn transparent glass.

As for soda ash, it is to lower the melting point, and limestone will produce calcium oxide, which is quicklime, at high temperatures.

Quicklime can improve the purity and stability of glass.

"It's built according to what Your Highness teaches." Wang Chong led Zhao Xu to a yard.

He saw buildings in the yard similar to blast furnaces and wind-heating furnaces.

However, the building is not tall, but is flat.

In fact, the heat storage chamber and the air-heating furnace have similar functions, both assisting the furnace next to it to heat up.

The principle is similar, they are to burn charcoal inside first and then blow out the hot air.

And coincidentally, the melting point of glass is about the same as that of iron smelting.

It can be said that blast furnaces can be used to melt glass.

However, glass is not like molten iron, it just needs to flow down and solidify.

Instead, keep heating and keep melting so that you can blow continuously.

"Since that's the case, let's try it today." Zhao Xu became energetic, and he was full of expectations for glass.

After receiving Zhao Xu's order, Wang Chong immediately became excited.

The craftsman commanded the craftsmen to put the raw materials in sequence according to the ratio given by the King of Yan, and then burned the fire.

Like smelting iron, Wang Chong also uses coke.

So the temperature of the glass furnace rose quickly.

Within three meters, the heat wave pounced on people's face.

After waiting quietly for more than an hour, the temperature of the furnace reached its peak.

At this time, the craftsman who was stirring the raw materials shouted, "The sand has melted."

Wang Chong was overjoyed and rushed over regardless of the heat. Sure enough, he saw a viscous liquid like red mucus flowing on the lowest surface.

Seeing this, Wang Chong stopped leaving and stayed by the furnace. His clothes were soon soaked in sweat.

Zhao Xu sat on the chair with a smile on his lips.

After waiting for a while, after all the raw materials in the furnace turned into red translucent mucus, he stood up.

"Put the hollow pottery tube." Zhao Xu said to Wang Chong.

This is also one of the things he asked Wang Chong to prepare.

The function is naturally to blow glass.

Wang Chong trotted all the way and brought a tube more than one meter long.

The glass is now melting, but neither Wang Chong nor the craftsmen know what to do next.

So they stared at King Yan one by one to see what he did with this tube.

After rubbing his hands, Zhao Xu was very excited. After all, there was a serious lack of entertainment in ancient times, and he could not always create children.

Holding the pottery tube, he came to the furnace and picked out a ball of red glass liquid from the inside with one end of the jar.

The liquid glass is very viscous and naturally hangs on one end of the jar.

At this time, he puffed up his cheeks and blew them up like a balloon.

When the gas enters the glass liquid, the space inside suddenly bulges, and the glass liquid also deforms.

Because the thickness is uneven, I look at it and swells.

Seeing this, Zhao Xu rolled the bulging side of the glass on the steel plate prepared by Wang Chong, and the side immediately faded.

Then he rolled while blowing, and soon a round shape came out.

But it was his first time to make it, and the bottle was not very standard.

At this time, he couldn't help but sigh that there was still an ocean between theory and practice.

He was secretly venting the whole process, but he was still like this.

When he was feeling emotion, Yu Guang swept over Wang Chong and the craftsmen.

I saw that they not only had no contempt at all, but instead had a look of admiration.

When the glass gradually cools down and turns into a clear transparent color, their mouths are even bigger and completely dull.

"Oh my God, is this glass? It's so beautiful." A craftsman stretched out his hand, as if he was about to hold the glass bottle in his hand in the void.

"This is the first time since I was born, I have seen such a beautiful thing. Even jade pendants are worse than gold." said another craftsman.

"Such beautiful things are actually burned by sand. It's incredible. Your Highness, King Yan, is so amazing." A craftsman was almost crying.

“…”

The craftsmen's amazement sounded in his ears, and Wang Chongcai came back to his senses from the sluggishness.

At this moment, his eyes looked at King Yan differently.

To him, it seemed that there was only King Yan left in the world, shining under the sunlight.

"Your Highness, the respect for you is like the surging river." Wang Chong knelt on the ground with a thud. "Your Highness, although this request is a luxury, please ask Your Highness to teach you what you have learned. For this, the lower authority is willing to pay any price."

Excited, Wang Chong ignored life and death.

Even if the King of Yan was angry, he would say it out.

When he saw the glass, he felt that he had no desires for his whole life. He just wanted to learn these superb craftsmanship with King Yan. Even if he didn't marry a wife and lived alone like a monk, he would be willing to do so.

"Get up." Zhao Xu helped Wang Chong up.

In fact, Wang Chong cannot be blamed.

Iron smelting, gunpowder and cannon construction have their own prototypes in Dasong.

His method only improves the quality.

The transparent glass was as shocked in Wang Chong's eyes as the immortal method of turning stones into gold.

That's why Wang Chong was so out of control.

"After a while, I will establish an official school. Then I will have the opportunity to learn it, but after teaching you something, you will lose something." Zhao Xu said.

"Please speak with your highness, your lord is not afraid of anything." Wang Chong said.

"Whoever learns skills from me will not leave Yancheng without my orders and will be subject to supervision. Do you want to? Zhao Xu said.

"I do." Wang Chong said firmly without hesitation.

"Okay." Zhao Xu was very satisfied.

He didn't want the things he taught to pass to the hands of the powerful clan.

Otherwise, your advantage will be gone.

"It's settled. Now, let's blow out the glass liquid from this pool first." Zhao Xu said with a smile.

After saying that, he explained the blowing skills to the craftsmen.

In the future, these craftsmen will be responsible for the production of glassware.

In half a day, the glass liquid was consumed completely in the test.

There are also many crooked glass containers in the yard.

There are also several craftsmen who are more skillful and have blown up some pretty glass bottles.

With three of the beautiful glass bottles, Zhao Xu returned to the palace.

It caused a stir in the royal palace.

"Your Highness, what is this? It's so beautiful."

The servants and maids of the royal family came to watch.

Feng'er and Luan'er's eyes also flashed with little stars.

Humans like shiny and beautiful affairs, which is the instinct of biological beings.
To be continued...