After taking a turn around the shipyard, Modo took a brief look at the progress of the apprentices, which was much faster than the previous batch, and he felt a sense of relief.

As for the letter from the empty crossing, he thought about it and planned to read it all.

Putting aside the cumbersome compliments and politeness at the beginning of the letter, Modo looked directly at the bottom.

But soon his eyes were drawn to it.

The second sheet of the letter was not a text, but a drawing, and Modo could tell that it was a drawing of a sailing ship, like which he had drawn countless times, but the difference was that the power that drove the sailboat forward was not a traditional long oar, but a strangely shaped square machine, and the specific way of working was described below.

Coal is burned to ignite the water in the cylinder, which generates steam to propel the cylinder, and then the cylinder transmits this power through the propeller shaft to the triangular fan-like object at the tail.

This thing is called a propeller......

Modo frowned, the boat completely abandoned the traditional way of traveling, and was powered by wind or human power, and replaced it with a self-generated machine.

With his many years of experience in shipbuilding, a machine that can propel the hull of a ship tens of meters forward, which he has never seen before, does this kind of machinery that can generate power by burning coal really exist?

Or is it just a fictitious gimmick by the Kuto Lord to get his attention?

"Nonsense!" Modo frowned and muttered, not to mention the authenticity of this mechanical existence, even if it really exists, then it is a big problem to assemble it on the ship, the first thing to consider is the sealing and seismic resistance, according to the drawings drawn, the drive called the propeller needs to be installed in the lower part of the ship's draft, then this requires rubber with excellent sealing as a rubber ring, to prevent the screw shaft from rotating when the high temperature will deform the rubber, resulting in water leakage.

In addition, the whole body of this machine is made of steel, and once it is put into operation, it will inevitably produce a huge roar and vibration, and the wooden hull cannot withstand this violent tremor at all, so it must be reinforced with steel plates near the hull where the machine is installed, or the entire hull must be replaced with steel.

But then the price to be paid will be almost multiplied.

And with that barren land out of thin air, Modo doubted that they would be able to get the materials to build a ship.

"Natural and human energy will eventually be replaced by mechanical energy. ”

The letter does not introduce much about the assembly and manufacturing methods of this machine, and at the end of the letter, this sentence is written.

Modo pondered that if such a machine existed, it would be a new era in which ships could be built and sailed, without the need to hire large numbers of sailors and rely on the wind that would not know when.

This is simply epoch-making technology.

Modo felt excited, as a boatman, his biggest dream was to make the most advanced boat, but due to the current technology, neither improving the sturdiness of the boat nor the curvature of the streamlined line was faster than directly improving the power of the boat.

But the other party did not specify the construction method of this kind of machinery on the letter, and I think it is also, how can it be easy to show it to people after mastering this new technology?

It seems that it is necessary to go to the empty ferry to find out the truth, if the other party is lying to himself, then it is a big deal to waste a few days of time.

But if that's true, Modo couldn't help but lick his lips, this is the most important turning point in the history of shipmaking!

......

The brazier was blazing, and even though it was already April, the Shadow Mountains were still a silent sight far from the human world, and the temperature here was more than twenty degrees cooler than the cities in the human hinterland, and even the hottest summer months were shrouded in old snow.

As the closest city to Hell, Ironrock City fits perfectly into people's minds as the last line of defense for humanity.

In less than a month, more than 3,000 crusaders marched into Ironrock City, and transported a large amount of stone and steel, building a third of the original eight-meter-tall wall of Ironrock City, and erecting a sharp spear row on top.

The damaged gate was quickly repaired in less than ten days, and a large amount of granite several meters long was piled up behind the passage of the gate, where the heavy stone sealed the city completely, and only a small gate was opened next to it for the rangers to enter.

Even inside Ironrock, Crusaders patrolled day and night throughout the day, and some people noticed that since the Crusaders took over Ironstone, the curfew was getting earlier and earlier.

A large number of arrow towers have been built in the city, and crossbows and catapults have been transported from the human hinterland city to Ironstone.

The Rangers, who used to patrol once every three days, became once a day.

And the Rangers are returning late, proving that the boundaries they explore are getting deeper and deeper into the interior of the Shadowmountains.

All of this seems to prove that war is about to break out again.

For the Shadow Mountains, the soldiers in Iron Rock City have an attitude of awe, their ancestors have driven those demons back to the depths of hell, but over the years, the demons have not disappeared, they often infest Iron Rock City and nearby villages, but most of them are scattered small-scale attacks, there has never been a situation like last time, hundreds of demon soldiers launched a mighty attack.

And the troll and the nightmare beast deepened the fear in the soldier's heart.

When the monsters that only exist in myths and legends appear in front of them, they can realize the horror of hell.

Fortunately, there are paladins.

They crushed the Machan's onslaught, and slain trolls and nightmare beasts that were nearly invincible in the eyes of ordinary soldiers.

But since that battle, no one has seen the paladin show up, and others say that the paladin has long since left Ironrock because of the more important battles to be involved in.

"What else is more important than the survival of the entire human race?" Kanai stood on the city wall, looking at the mountains shrouded in shadow in the distance, and his mood became heavier and heavier: "The nobles of the five kingdoms always like to intrigue and compete for power, but they don't understand at all, compared to the survival of the entire human race, what is a temporary victory or defeat?"

"The comfortable life makes them forget that in the west of the human plain, there is such a group of monsters staring at us. A middle-aged officer with a face full of vicissitudes stood beside him, sighed and said: "The conscription order has been issued for two months, and the troops who have come to support ......"

He glanced at the various military flags scattered in Iron Rock City, and the soldiers in different uniforms below were scolding and scolding and grabbing the flat terrain and camping: "There are very few. ”

"And they're all military ruffians!" Capet scolded indignantly, pointing at the soldiers, as if pointing to a bubble of moldy shit: "Since they came to Iron Rock City, the crime rate has skyrocketed, theft, robbery, and the Judge Advocate General's Department has to deal with more than thirty cases a day, and I even wonder if those nobles have just grabbed some prisoners from their prisons and thrown them over!"

The middle-aged officer, who was the deputy commander of a detachment of the Crusaders, listened to Kanai's complaints, and said with a smile: "No one will send their elite troops here to fight to the death, they are busy fighting for territory in the kingdom, and to be honest, I didn't plan to count on them, as long as they are willing to give some silver coins or grain and grass to support Iron Rock City, I will be satisfied." ”

"It's all greedy stupid pigs...... Kanai scolded with her head down, "I really should let those nobles go to Ironrock City to see for themselves, and see how many soldiers have fallen under the cold walls for the sake of human reproduction, and have died without even their names." ”

"Bang bang!" the middle-aged officer patted Kanai on the shoulder, "Okay, don't think about it, the Crusaders will definitely help you hold Iron Rock City, even if you fight to the last man, you will never retreat." ”

Several black dots suddenly appeared on the horizon in the distance, and they were rapidly approaching in this direction.

"The Rangers are back!" the soldier in charge of reconnaissance on the watchtower waved his small flag downward.

"Hopefully they can bring a little bit of good news. The middle-aged officer smiled self-deprecatingly.

Kanai looked at the sky and frowned: "The Rangers came back a little early this time......"

"No! there's something chasing them behind!" Before Kanai could finish speaking, the soldiers on the watchtower suddenly widened their eyes and shouted a warning: "The rangers are followed by a group of monsters!"

Kanai felt his heart pound, and he picked up his lookout and looked in that direction, only to see five rangers covered in mud, and even two of them had lost their weapons, desperately slapping their mounts in an attempt to shake off the trackers behind them.

"Where's the crossbowman, quick! Cover for the rangers!" the middle-aged officer shouted, and there was a commotion on the city wall, and with the click of a click, dozens of long crossbows were neatly placed on the arrow holes of the city wall, aiming at the monsters behind the approaching rangers.

Thirty seconds later, the rangers came into range, and they saw the crossbowmen on the ramparts, raised their hands and shouted for help.

"Whoosh!"

"Whoosh!

At Kanay's order, dozens of arrows whizzed out, shooting straight towards the rear of the rangers.

"Change the spear projection!you can't pierce their scale armor with a crossbow!" the Ranger exclaimed in horror, he had tasted the power of these monsters, and ordinary arrows would only make them bleed, "These damn dragonmen are so strong in defense that they are so strong in defense that they are the Green Goblin!"

There was a clanging sound behind him, mixed with the dull sound of arrows falling to the ground, and a gust of wind swept in, and the Ranger who landed at the end subconsciously bowed down.

The smell of the wind brushed his cheeks, and the mount beneath him let out a mournful roar, and the Ranger felt his lower body empty, and the horse and him fell in the snow.

Immediately, several monsters rushed up and surrounded the rangers like hyenas eating corpses.

"Ahh

There was an extremely terrible scream from the rear, and the remaining rangers did not dare to look back, gritting their teeth and rushing towards Iron Rock City.