Datang: My private money was exposed by Li Shimin

With Li Shimin's careful observation, he discovered something new soon.

In a corner not far from them, there were many dark things piled up.

The shape of these things is also very strange, they are all cylindrical as thick as an arm, and there are many small holes in them, which look quite regular.

The corners where these things were piled up were all stained black!

This is also the reason why Li Shimin found this place, he was very curious, what is this dark stuff?
To know.

Things that can appear in the laboratory definitely have a mysterious effect.

"Your Majesty, I know about this thing. According to His Highness, these black briquettes are called briquettes, and they are a type of coal!" Wang Xuan also followed, and immediately explained with a little complacency.

Before this.

He introduced everything here to Li Shimin and the others one by one. Whenever he felt their strong shock and unbelievable emotions, Wang Xuan felt a strong sense of pride.

But this time when he came to the laboratory, he didn't know what to ask. It was because of all the previous deeds that he felt a deep sense of loss.

Now that he finally saw something he was familiar with, he immediately explained it without hesitation.

"Honeycomb coal?" Fang Xuanling was also attracted by this place, and looked at Wang Xuan in bewilderment.

While saying these words, he purposely squatted down to watch those black coals carefully.

Combined with those densely packed small holes, it does seem to be somewhat similar to a honeycomb.

But the key is, what is the use of this thing?

"What is coal?" Cheng Yaojin walked over crookedly like a crab, trying not to let his actions involve the wound on his buttocks.

Seeing everyone's extremely expectant eyes, Wang Xuan felt that strong sense of pride again.

He cleared his throat and looked at the pile of briquettes and said in a low voice: "Well, briquettes are a kind of coal, in fact, when His Highness was in the mansion, we used this kind of coal!

"This thing can burn continuously, which is dozens of times better than ordinary firewood. The most important thing is that this thing can generate high temperatures that firewood can't reach!"

"According to His Highness, this kind of coal is buried in the ground. As long as you use the right method to dig it, there will be a steady stream of coal to use!"

Hearing Wang Xuan's explanation, whether it was Li Shimin, Cheng Yaojin or the others, they couldn't help swallowing hard. Regardless of their noble status, when they were in the army, they all had knowledge about firewood. understood.

According to what Wang Xuan said, if this coal is used instead, the amount of firewood used can be greatly reduced, and it can also achieve twice the result with half the effort.

If it is applied to the homes of ordinary people, it will bring considerable convenience to the people of Tang Dynasty.

The key is.

This thing can be continuously excavated from the ground. If it is specially managed by the imperial court, it will be promoted at a suitable price.

Even, in the end, it will be of great benefit if it is extended to major nomadic peoples such as Turks.

After so many things, Li Shimin has deeply understood that the more inconspicuous but closely related to life, the more unimaginable benefits can be brought.

however.

Cheng Yaojin thought of another possibility!
"You just said that this kind of coal can produce a high temperature many times higher than ordinary firewood, right?" Cheng Yaojin seemed a little excited, pulling Wang Xuan to ask repeatedly.

"That's right!" Wang Xuan didn't know what he knew, so he nodded dully.

"In other words, if this thing is applied to forging, it will be easier to forge hard and sharp weapons, which is really great!"

It wasn't until Cheng Yaojin said these words that everyone understood what he wanted to express.

Cheng Yaojin spent most of his life in the barracks. Apart from having a good understanding of military operations, he also had a good understanding of weapons and equipment.

He naturally understands that in the process of forging weapons, the most important thing is to control the temperature. The higher the temperature, the harder the weapon will be, and the sharpness is not the same.

nowadays.

All the methods of forging weapons are trying to increase the temperature of the fire.

If this coal can be used, it will definitely bring a lot of convenience, maybe it will be easy to create sharp weapons in large quantities.

With advanced weapons and equipment, the kind of clairvoyance possessed by the generals, and the blessing of horseshoes on the horses, Cheng Yaojin couldn't imagine what kind of capabilities the Tang army would be able to display on the battlefield in the future.

Cheng Yaojin's statement made Li Shimin feel enlightened.

Yes!

The role of coal can not only improve the convenience of daily life, but also have an impact on weapons and equipment.

In fact, not only weapons and equipment, there are many things that need to be forged at high temperature. To some extent, this is very likely to change the whole world.

Li Shimin only felt his mouth was dry, and he found so many exquisite and good things in less than an hour after he came to the laboratory.

How many babies are there?

Thinking of this, Li Shimin began to search again. He wanted to see how much he could gain today...

……

With the experience of the previous two times, Cheng Yaojin also started to act, although his ass was injured, but at the moment he didn't care at all, the speed of action was no worse than Li Shimin and Fang Xuanling.

soon.

He found a crossbow on the other side!
Perhaps because of his natural sensitivity to weapons and equipment, Cheng Yaojin discovered the crossbow as soon as he walked over.

"That's strange, how could such a thing be installed on it?" Cheng Yaojin picked up the crossbow without hesitation, looked at the scope installed on it and said in a low voice.

Li Shimin also followed the sound, and with the knowledge of the telescope, they easily understood the function of the scope.

only.

Now they don't quite understand, what kind of wonderful effect can the combination of the two have?

"Your Highness probably means that through the aiming of this thing, you can hit the target more accurately!" Wang Xuan looked at the crossbow and said thoughtfully.

"Really?" Cheng Yaojin simply lifted up the crossbow and tried it himself.

Through the scope on the top, it is indeed possible to see far away clearly, which is similar to the mysterious cylinder.

"Let me try it!" Li Shimin suddenly became interested, and directly took the crossbow from Cheng Yaojin, then found the crossbow bolt from the side, and installed it himself.

immediately.

He came to the window, opened the window and aimed at a small tree not far away.

According to the original habit, it takes a long time to aim, but through the scope installed on it, he can easily see the target.

Even the lines on that small tree can be clearly seen...

……