"It's a deal! Old Seven, call the boat ferry to take the official to the other side to have a look! Hong Tao slapped his thigh, Qi lived, and it was just like that.

Originally, she was still struggling with how to deal with this princess, but now she has sent it to the door herself. As long as this bridge is built, she will have to do whatever she wants, including not marrying herself, of course, she must be confident!

After taking a ferry boat and leading the horses to the other side of the river, and then traveled ten miles to the east and west, after surveying all the narrowest sections of the Hutuo River, Hong Tao's face became iron-blue. This bet is a bit sloppy, not because you can't win, but because the price is a bit high.

This section of the river is lined with shallows on both sides of the river, and the texture is silt and silt, making it very difficult to build the bridge piers. Twenty miles to the west, there is a river with a gravel foundation, but the current here is too fast and deep, and it is not difficult to build, but simply impossible.

"Send people to the shipyard to transfer people to build stone boats here, and let the foundry build twenty-four iron chains 100 meters long and thigh-thick, and pull them here in sections by cars to connect them. Then make a finger-thick soft iron bar and pull it together, as many as you want. ”

The difficulty of building a bridge is a bit big, but it is more troublesome not to send this princess of Liao away. The lesser of two evils, after thinking about it, Hong Tao still feels that the latter is more important.

When the bridge is built, it can not only serve the war, but also benefit the people of one side, and the cost is also worth it. Isn't it just a waste of steel, now the least worrying thing is the output of steel, the big deal is to reduce the amount of pig iron on Wang Hao's side first, it won't be too long, just a few months.

"The officials are going to build a chain bridge!" Wang Qi has devoted himself to the study of architecture for many years, and he has figured out that he is not far from ten in just a few words.

"Hehe, yes, I even know how to bridge ropes. However, the river is too deep to build piers in the center of the river, and ordinary bridges are too large to be built, so the official thinks that only rope bridges are suitable. ”

Rope bridges were rare in the Song Dynasty, but they were not absent, but they were mostly concentrated on rivers with high cliffs, turbulent currents, and not too large spans in the south.

Wang Qi can know this, which means that he not only worked hard, but also read a lot of ancient books. This is a very good habit, if you want to make progress, you can't patronize the present, you have to look back behind you from time to time, whether advanced or not, the more you know, the wider your thinking.

"But both sides of the strait here are loess, and the iron cable cannot be fixed...... Wang Qi was not complacent because he was praised by his adoptive father, but there was more worry on his face. In addition to the strong iron cables, there is also a necessary condition for the construction of chain bridges, and there must be solid rocks on both sides of the bank to hold the iron cables.

"Don't get in the way, since this official can build a stone boat, it won't be difficult to get some rocks out." This is a good opportunity for Hong Tao to pretend to be a ghost, how unfathomable and unfathomable it is.

"Officials should make rocks out of cement!" The ancients may not be very accustomed to the use of concrete, they can build roads and build ships, but they dare not think about other projects.

"Yes...... This time, not only cement, but also iron cages, called reinforced concrete, had to be added. You also arrange for people to build dams in the shallow water on both sides, rocks alone are not enough, such a large span requires at least two piers, which is a big project. ”

It's quite simple, but it's not really easy to do at all. The construction of two sturdy piers on the soft riverbed meant that there was a lack of large construction machinery, and the damming and excavation work had to be carried out by manpower.

In the past month by the Hutuo River, Princess Terry's sense of the founding prince Wang Shu has deepened again. Originally, she just thought that this man was very capable, but now she thinks that this man is a little scary.

He can turn the earth into hard stone, harder than stone, and there are nets made of steel bars inside. After it is completely solidified, it will not be damaged if it is rounded with a sledgehammer.

With this spell, a large pit was dug deep into the riverbed, which was surrounded by an earthen dam and had sucked up the water, and the reinforced concrete base, layer by layer, grew upwards at a speed visible to the naked eye. By the time they were five feet above the river, the piers were ready.

The two piers are seventy steps apart, and eight thigh-thick iron chains are fixed on them, and then wooden planks are laid on the iron chains and fixed with steel nails, which is the main body of a bridge.

There is a distance of about 60 steps from the pier to the river bank, which is also built in this way, which is equivalent to connecting three chain bridges together. After completion, if it is combined, the construction of a second one in the Yishui River will be built immediately, completely solving the problem of these two big rivers blocking the road.

"Erlang, after you go back, remind Miao Kui and ask him to send someone to garrison here as soon as possible. You also have to bring sappers with you, and test how much medicine is needed to blow it up with extra chains as soon as possible. In the future, if there is an accident, blow up the iron chain on one side, and then use the siege crossbow to blockade it, which can be delayed for at least a month or two. This place is not as good as Huangzhou, and it is not easy for large troops to cut down trees and build boats to cross the river. ”

In the eyes of most people, the Hutuo River Chain Bridge is just a bridge, and no matter how high-tech it is, it is just convenient for transportation. But in Hong Tao's eyes, it is still a big pit, a strategic pit. If used well, it can not only block the enemy, but also use it as a trap to lure the enemy deep into the encirclement and annihilate him.

"Wouldn't it be a pity that such a good bridge blew up......" Jiang Erlang looked at the iron chains stacked on the shore, and he was really reluctant. An iron ring is more than 100 catties, all of which are of fine carbon steel, which can be used to make swords with a little beating, which is extremely sharp and tough.

"It's not all blown up, only a few chains are broken, and it takes a few days to connect them. Go to prepare and prepare, it's been a long time, Fucheng can't be left alone, it's time to go back" After the idea was finished, the foundation of the first bridge pier was also laid, and Hong Tao was about to slip away.

Work is not his forte, this has become a large construction site, more than 3,000 engineers and civilians have been transferred in half a month, and it is messy and unsafe. No one has the time to listen to their own nonsense anymore, heroes are useless, so let's go back to the shipyard and see how the first batch of children who sailed away are doing.

After a month, I returned to the Yellow River embankment, and the scenery in front of me changed again. The keel of the hull that was originally lying on the shore has been covered with thick planks, and it no longer looks scattered, and the general shape has also been changed, a strange ship with a wide bottom and a narrow top.

Not far away, there was something even stranger than a strange ship, a large black ball floating in the air, and there were people climbing up and down under the big ball, which was scary to look at from afar.

Anyway, Princess Terry was scared enough, and she called the gods down to earth, refusing to get close, and pulling Hong Tao's sleeve and not planning to let her man get close.

"Look, is it a god? If they are immortals, they will be the leaders of the gods. Be careful with your legs, don't go too fast, the official still has something to do, go around by yourself. ”

Hong Tao didn't talk nonsense, grabbed the princess's body and hugged it horizontally to his chest and strode over, until he could see the rope ladder under the hot air balloon before putting the person down, and then took the crutches from the wasp and stuffed it under the princess's armpit, patted the person's head like a child, turned around and walked down the embankment and walked towards the shipyard.

Princess Terry probably didn't know that Wang Shu was gone, her neck was about to break, staring at the big black ball on her head, her eyes didn't dare to make a mistake, and her head was probably fighting between man and god.

There were many people who had all kinds of questions like her, but unfortunately they did not have the opportunity to observe closely, so they could only stand under the embankment and watch.

Since the sudden appearance of this big black ball, the people near the Daimyo Mansion City have exploded, and they were too frightened to approach in the first few days, but then they changed to a swarm, and if there was no new army to stop them, they would definitely have to put the incense case under the big ball.

Hong Tao asked the new army to raise the hot air balloon really not pretending to be a ghost, with his chicken thief character, since it has been built, it must be somewhat useful, and it cannot be wasted. But what is it for, he intends to use it as a lookout post for the new army. Stand tall to see far, hot air balloons with binoculars, you must see farther than anyone else.

As with training sailors, it is not easy to go to the sea and even harder to go to the sky. Whether it is the new army or the special forces, it is no problem to climb the peak of a thousand meters, but as soon as you talk about hot air ballooning, you will be dizzy. This kind of reaction is not in a rut, and can only be slowly eliminated by training.

As a result, the hot air balloon became another training program of the New Army, and every day a group of soldiers climbed one by one with ropes hanging from the hot air balloon. It is not enough to climb up, and you have to report clearly and accurately to the bottom in the flag language how many straw men are in the two rows of straw men erected on the embankment two miles away, so that you can climb down.

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