Seeing this, Jiang Tian paid several hundred kilograms of iron ore to buy the reading glasses and gave them to Mr. Lu.

After Mr. Lu took it on, he looked like a scholar.

Jiang Tian stepped forward and shouted softly.

"Old Lu."

Lu Ban, who was studying, did not answer, or in other words, he was obsessed with the study and ignored his surroundings.

Jiang Tian patted Mr. Lu gently, and the man came back to his senses, his tone slightly impatient.

"Didn't I tell you not to disturb me while I'm researching?"

Mr. Lu did not look back, scolded and continued to study.

Jiang Tian smiled and said, "Mr. Lu, it's me."

Only then did Lu Ban hear the sound, turned around and looked at Jiang Tian, ​​and his frown relaxed.

"It turns out to be the lord."

Jiang Tian said "hmm", looked at Lu Ban and said, "Mr. Lu, I didn't ask you to modify the explosives in the previous diary. How is the modification going?"

A few days ago.

Jiang Tian learned that the Hidden World Family was going to call sooner or later, so he began to ask Mr. Lu to develop a new type of weapon.

Explosives are still used, but not the bombs developed previously, but a fire barrel.

This is what he learned in anti-war movies, and it's called mortar.

This kind of mortar must not be used to release ordinary bombs, but another kind of explosive.

Mortars are not simple.

In other words, the production is very simple, but it is not simple for the mortar to play its role.

The mortar explosives are fine.

But it itself is a difficulty.

Jiang Tian knew that in his previous life, the minimum attack distance of a mortar was only a few dozen meters.

You don't need a mortar at this distance, you can just throw it by hand.

A good mortar can have a range of several kilometers or even dozens of kilometers.

What is this concept?

If there were no clouds in the air, they could see the empty island several kilometers away, but there would be no movement towards them.

Either stop and fight him, or escape the opponent's pursuit.

Apart from these two methods, there is no third way.

But if the mortar is researched, the enemy will appear within their line of sight, several kilometers away, and will be suppressed by their gunpowder.

You can even pull and hit at the same time.

If you want to hit me, I will run away. I can also turn around and hit you while running.

If you want to run away, I will catch up with you and beat you again.

This is very invincible and very rogue.

This was what Jiang Tian came up with on the steam engine.

Once they install steam engines and mortars on the empty island, their merchant alliance will be able to run rampant in the empty island world.

There are many enemies, so what?

As long as the Merchant Alliance Sky Island is not surrounded, they will always be invincible.

This is why Jiang Tian knows about the Hidden Family Alliance, but is still not too worried.

pity.

According to current technology.

The attack distance of a mortar cannot reach several thousand meters, or even dozens of kilometers.

Those materials are extremely precious.

Mr. Lu suddenly became excited when he heard that the alliance leader was discussing research with him.

"My lord, that thing called a mortar is really extremely smart inside. No matter how much I think about it, I can't imagine that there is such a powerful weapon."

In the past, even the largest city in the world would have been defenseless against this mysterious weapon.

Jiang Tian smiled slightly.

Modern weapons are the result of hundreds of years of human wisdom, and many resources are open. This kind of weapon has long been eliminated.

Think of ancient times.

After Lu Ban's death, his descendants would never show Lu Ban's notes to others, but would keep them behind closed doors.

This is the reason for the backwardness of ancient times.

But modern times are different.

Some scholars record things they have half-studied and not thoroughly studied to give future generations an idea.

Plus absorb the knowledge of the ancients.

Simply put.

The fact that modern people can develop so fast means standing on the shoulders of giants.

Lu Ban put aside the things he was studying and turned around and walked into a small door of the arsenal.

After a while.

Lu Ban came over with excitement on his face, holding something covered with a lid.

"Lord, this is the weapon you asked me to study."

Lu Ban opened the lid excitedly and looked at Jiang Tian anxiously.

He already knew that the young lord in front of him was a genius in his field.

Just saying a few words can make him enlightened.

Starting from that strange formula... one nitrate, two sulfur and three wood, those ordinary Dongxu could actually make such powerful explosives.

It's simply a masterpiece of craftsmanship.

Now just say something casually and let him make this mysterious weapon again.

The Lord is simply a genius of the Mohist family.

Lu Ban admired him in his heart, but he didn't express it too much on his face. He was an old man after all.

No matter what, you have to maintain your own personality.

Jiang Tian didn't know what Lu Ban was thinking. He looked at the poorly made mortar in front of him and said with some suspicion:

"Mr. Lu, can this thing be used?"

It's not that he doubts Lu Ban.

Moreover, the appearance of this mortar is really poor. The pipe is slightly twisted, and the car underneath is difficult to place flat.

The vehicle is uneven, and if the mortar attack distance is slightly farther, it will deviate from the attack point.

This thing needs to be accurate to microns within a kilometer, and even to nanometers for tens of kilometers.

A deviation of one millimeter will be magnified a hundred meters away. If this mortar were used to attack enemies hundreds of meters away, it would probably go to grandma's house.

However, he also knew that with the current level of sky island world, it would be difficult to make a regular mortar.

There is no high-tech measurement like before, everything can only be made manually, and deviations are normal.

Even the hands of the attending doctor cannot move at all. If you want to minimize the deviation, you can only use machines.

These are conditions that do not exist now.

"Lord, how are you doing?"

Luban's tone was slightly expectant.

He has made several mortars in the past few days, but this one is the best and looks the best.

He melted all the others, leaving only this one.

Jiang Tian paused and said, "We still need to experiment."

He didn't know how far this mortar could attack. If the attack distance was within one or two hundred meters, with such a slight deflection, the error wouldn't be too big, and at most it wouldn't hit anyone.

But the deterrence is still sufficient.

But for this distance, a catapult is enough. Although the attack distance of catapults and ballistas is not very far, the accuracy has to be measured.

This is the reason why many forces cannot make large weapons and can only buy them from other places.

But with a range of one to two hundred meters, as long as the deviation is not too large, large weapons can be used.

But mortars can't.

Jiang Tian took Lu Ban, took a few shells specially used for mortars, and came to the edge of the empty island.

Since it’s a test, let’s use an empty island.
Chapter completed!