In the middle of the Congo River, thousands of ships are quietly anchoring in the largest river channel, and two steel wharves have been built.

These two piers are not big, and each can accommodate two armed merchant ships to dock side by side.

However, these two wharfs are quite reliable, and even if the trees and wood cutting machines are opened, they cannot be shaken at all.

It is indeed worthy of being a steel bar, hard enough!

Seeing this, Taichang couldn't help but exclaim: "Bogong, this kind of wharf is really good. How about we building a factory in Xinma City to specialize in producing this kind of wharf?

In this way, our speed of building a port terminal can be increased by more than ten times."

Uh, this one.

Du Linzheng said helplessly: "Your Majesty, this kind of wharf is actually not as durable as reinforced concrete.

Because steel can easily rust after soaking in water for a long time, especially when soaking in sea water, it rusts faster.

Weichen estimated that it would take a few years to repair such a dock by the sea, and even if it is built in the river, it would last for more than ten years at most."

There is always a way to solve this.

Taichang insisted: "We can ask Chang Geng to study anti-rust steel or anti-rust coatings. If it really doesn't work, we can build the dock first and then slowly pour concrete.

Anyway, this kind of dock is very good, and we must promote it vigorously."

OK, you have the final say, your emperor.

Du Linzheng hurriedly bowed and said, "I understand."

After driving a few trees and wood cutting machines, Aruka and Asipa began to land with their Amazon Tribal Alliance soldiers.

Because the open spaces next to the docks on both sides are not very large, if you want to drive all the trees and log down machines up, you have to cut down all the surrounding trees and clear out a large area of ​​open space.

This is a very familiar figure for the Amazon Tribal Alliance soldiers.

They came out of the tropical rainforest. There were so many trees in the Amazon jungle that they couldn't count. They didn't know how much they had been cut. Cutting down trees was like a common thing for them, and they were also familiar with the road of logging with machines.

The trees on the shore fell in rows, and more and more large machines were driving the shore.

At this moment, the cutting and wood cutting machines can not only cut down the trees, but also the machines are specially designed to remove branches and leaves and cut off tree trunks, and there are even machines that specialize in processing wood squares and wooden boards.

After being pulled over by soldiers from the Amazon Tribal Alliance, the towering tree was quickly removed and turned into pieces, and the pieces of logs quickly turned into wooden boards and wooden squares.

Taichang looked at the neatly packed wooden boards and wooden squares and couldn't help but sigh that the Ming Dynasty's technology was developing too fast, and sometimes he could not catch up.

Of course, it is not difficult to develop this kind of machine for processing wooden boards and wooden squares, that is, it is just a combination of sawing machines and tree-cutting machines.

He didn't make any noise anymore, as he seemed too ignorant as the emperor.

However, he could not help it again soon.

After discussing with several directors of the Ministry of Works, Aruka and Asipa directly ordered people to lift a pile of iron racks from the armed merchant ship and put them on the selected open space and smash them into it.

What is this for? Is it repairing the piers?

The problem is that the pier that was landed is at least one mile away from the bridge repair. Why did they start repairing the bridge piers from here?

The soldiers of the Amazon Tribal Alliance were really quick. After smashing rows of iron racks into the soil, they carried the processed wooden squares and nailed them up.

There seemed to be many holes that had been opened in advance on the iron racks, and they nailed them so quickly. Not long after, the wooden square and the iron racks were connected forty or fifty feet long.

What exactly is this doing?

Taichang couldn't help but ask, "Bogong, what are you building in Aruka and Asipa?"

Du Linzheng quickly explained: "Master, they are building the landing gear for hot air balloons.

Because it is too troublesome to explore this tropical jungle, people can't tell the difference between the east, west, south and north when they get in, so Weichen is going to use hot air balloons to explore the way.

After all, the jungle is not all flat, and there are still mountains in some places. If we turn the road directly to the mountain, we have to go around a semicircle before we can go around.

Not to mention the troublesomeness of repairing like this, it is not convenient for the large army to travel.

There are also swamps, lakes, etc., so we cannot directly repair them inside.

After the hot air balloon is detected, we can adjust the direction roughly according to the terrain, and there will be no situation where we will turn sharp turns while we are repairing."

It turned out that this guy brought even hot air balloons.

When Taichang heard this, he couldn't help but nodded slightly and said, "Well, it's not bad, it's well prepared."

Unexpectedly, Du Linzheng prepared more than that.

After two hundred trees and wood cutting machines landed ashore, two armed merchant ships each with hanging hoists leaned on them.

Immediately afterwards, the wolf-tooth warship leaned on the armed merchant ship, and the hooks on the armed merchant ships directly reached on the deck of the wolf-tooth warship.

After a while, a bunch of things like waterwheels were lifted from the Wolf-Toothed Warships.

This is the Wolf Tooth Warship that is assembling a clean-up river channel!

Taichang could tell at a glance, because many of these special wolf-tooth warships have also been assembled in the Xibo Province.

However, when they assembled in Siber Province, they used hanging hoists installed on the docks, but this time they used hanging hoists installed on armed merchant ships.

He is quite familiar with this scene.

He couldn't help but show off: "Bogong, is this a wolf-tooth warship that specializes in cleaning the river?

Du Linzheng nodded repeatedly and said, "Yes, Master, there are not many places suitable for building large docks in the river channel, so Weichen specially brought a hundred wolf-tooth warships to clean the river channel.

When this kind of warship comes, it cannot be installed on the bucket, because it will increase the resistance of the water. When the bucket is installed, the speed of the wolf-tooth warship will become extremely slow.

There is no way, we can only drive it to the site and assemble it."

Taichang thought he understood this wolf-toothed warship very much, but he actually didn't understand it very much.

Because after the other person decorated the rear bucket, he installed something on the left and right, which was only half the length of the bucket, and the thing looked similar to a water truck.

Seeing this, Taichang couldn't help but say in surprise: "Why are you installing a stake on the left and right?"

Du Linzheng quickly explained: "Your Majesty, that's not a bucket, that's a water truck.

We dug up the mud and sand at the bottom of the river and then rinsed it with a water wheel. The mud will be discharged from the drainage holes on both sides with the water flow, and then washed away by the river water. All that is left is river sand and pebbles.

This not only allows the wolf-tooth warships that clean the river to work longer, but also can be hung ashore in baskets to mix concrete."

Well, this wolf-tooth warship that cleared the river has been improved!

When Taichang heard this, his old face turned red.

Well, he really can't keep up.

The technology of the Ming Dynasty was developing too fast, and he had never seen many things before.

This technology is used in production, or in various fields, and the power it explodes is really terrifying.

In one day, they actually built two docks and two hot air balloon landing gears.

Moreover, all 200 trees and wood cutting machines have been set ashore, cutting and opening all the way, directly to the place where the bridge is scheduled to be built.

The next morning, the hot air balloon slowly took off. In less than a day, the detection of the terrain of 500 miles was completed. Du Linzheng began to plan the route and prepare to officially start road construction.

The trees on both sides of the bridge were not idle either. The trees on both sides of the bridge fell in large numbers. In less than a day, rows of temporary warehouses began to appear on the shore.

There are also those wolf-tooth warships that cleaned the river, which even digged deep into the river between the steel wharf and the bridge construction site. In less than a day, rows of ordinary wharfs began to get piles down, and the dense piles extended from the steel wharf to the bridge construction site.

About ten days later, the large and small docks on both sides of the river bank, which were more than a mile long, were formed, and thousands of ships had docked.

The river banks on both sides were cleared out of the open space within a radius of nearly ten miles. The densely packed simple warehouses and temporary barracks were row after row, and there were countless numbers.

There are also the river sand and pebbles, which are like small hills, filling the open space next to the docks on both sides.

The soldiers of the Amazon Tribal Alliance even made thousands of flatbed carriages, specially used to pull cement, steel bars, sand and gravel, and wood.

The terrain within a radius of thousands of miles has been detected, and Du Linzheng even drew the planning diagram.

Taichang looked at the dense planning maps and couldn't help but sigh: "It's really not easy to build a road."

Originally, he thought that he would just pull the tree-cutting machine and cut it directly to both sides. After the tree was cut down, he would dig out the roots and then fill the road surface with solidity.

Because the original Pernambuk and the later Siberia basically did this.

But he couldn't do this now, because it was a rainforest. Even if it was not the rainy season now, it would rain a few times in ten days.

Building roads in this kind of place requires not only considering the road surface, but also considering many other issues.

For example, when storing materials, cement cannot be wet. If it gets wet, it will turn into bags of cement blocks.

In fact, steel bars cannot be wet from the rain. If they are too much wet from the rain, they will rust badly.

Another example is the food and accommodation issues of 250,000 soldiers.

These soldiers cannot always live on the boat. Once the road is built, it will be hundreds of miles away at all times. If people run back and forth all the time, they will not have to work. There is not enough time to just come back and rest in one day.

Du Linzheng had considered these things. He set up a temporary camp every hundred miles or so. The temporary camps included places where cement steel bars were stored, places where wood was temporarily placed, barracks where soldiers rested, etc. were all planned.

There is also a large camp on the north and south edges of the planning map, and even the landing gear of the hot air balloon has been planned.

There is no way, the flight distance of this hot air balloon is limited. No matter how much Cheng Jiashuo improves it, he can only make the hot air balloon fly for about a thousand miles in the sky.

This time it will turn into five hundred miles.

So, at this moment, they have already detected the areas 500 miles from north to south. If they want to continue to detect on both sides, they have to build a hot air balloon landing gear so that the hot air balloon can fall down to replenish fuel and water.

Taichang understood all these, and the only thing he couldn't understand was why Du Linzheng set the width of the Central African Avenue to twenty feet.

That guy is twenty feet wide, and even a hundred people can pass through the square formation, so it is naturally impossible for him to line up such a wide square formation when marching.

He said curiously: "Bogong, why do you need to build this road twenty meters wide? Isn't it a waste of time?"

Du Linzheng quickly explained: "Your Majesty, I have no choice. It is impossible not to build the road so wide, because it will take more than ten days to completely dry the cement.

With our advancement speed, it is definitely no problem to repair twenty miles a day on both sides.

In this way, the road surface has not dried yet, but it requires a large amount of steel bars, cement, sand, gravel, wood, and even grain to be transported.

In this case, we can only lay reinforced concrete on half of the side first, and leave the other half as a passage. When this half is dry, we can use this side as a passage and lay reinforced concrete on the other side.

Twenty feet is already considered narrow. After all, there are too many supplies we need to transport, and there are also many carriages coming and going."

Well, it seems that the cement roads were built in later generations, and he just didn't react for a while.
Chapter completed!