Daqin Engineers

On the way to withdraw the troops, Ying Zheng and Wang Jian and Yang Duanhe began to discuss the attack on Wei.

The first thing Yingzheng considers is Wei's foreign aid, which is also the most important point in fighting the six nations for so many years...Although the six nations have never stopped fighting internally, when a country is about to perish, there will often be rescues from other countries.

"The country of Yan has no food and no reinforcements."

"On behalf of the country is nothing to worry about."

"Qi State is even the one invited by Yan State to not send troops, let alone Wei State."

"It's just this Chu country..."

Wang Jian replied:

"The combination of Chu State and Yan State is just a look."

"And the internal situation is not stable, and his subordinates think that Chu will not help Wei."

Ying Zheng frowned and shook his head:

"I'm afraid not necessarily."

"At the invitation of the State of Yan, Chu was far away from Zhao State, and there was no skin pain between the three counties and Chu."

"But this is not the case in the State of Wei. The State of Wei is adjacent to the land of Chu. Protecting Wei is to protect Chu."

"What's more, the Chu Kingdom has a vast territory and many soldiers. The Chu King is not as stupid as Yan Wangxi..."

After some analysis, Wang Jian was convinced and said:

"The king said that the beam of the capital city of Wei is only a few dozen miles away from the border of Wei and Chu."

"If Chu soldiers come to help, our army will suffer from the enemy."

Yang Duanhe added:

"Besides, the beams have strong walls and dense water nets around them, making it difficult to attack the city."

This is a characteristic of the beams of the capital of Wei State.

Wei Guo has been strengthening the city wall since King Liang Hui moved his capital to Daliang City in the sixth year, and it has been more than 100 years.

Now this city wall is already a well-known strong city in the world. In history, Qin and Qi have fought under Daliang city several times, but they all returned because they could not break the city without success.

The thick walls of the city are only one of them. More importantly, Wei has been digging canals in the beam to divert water from the Yellow River for irrigation.

These canals and ditches spread out around the girders like a fan, dividing the open ground into multiple small pieces.

This caused a lot of inconvenience to the offensive side.

Even Wei Jun counterattacked from the city from time to time and then combined defense with the city pool and water net, making the enemy helpless.

Wang Jian said to Yang Duanhe:

"I'm not too worried about the siege, isn't there an engineer named Shen Bing?"

Yang Duanhe quickly replied:

"Give it to the general."

"Shen Bing has been promoted to her husband!"

Wang Jian nodded and said:

"That's great."

"It is said that he recently made another...floating bridge?"

Yang Duanhe answered:

"The general said it was true."

"This pontoon is made of logs, so it floats on the water like a raft."

"It only takes a few hours before and after to build a bridge for soldiers to pass."

Wang Jian nodded and said:

"That's it."

"In the past, our army was unable to capture the main beam because of the water network."

"Now why don't I wait for a pontoon bridge to smash the water net and a catapult to attack the city wall?"

"You must know that even Handan Jiancheng can be easily broken under Shen Bing's trebuchet, and how many days can the beam resist?"

Yang Duanhe thought for a while, then nodded and said:

"The general said that this method is feasible."

Ying Zheng nodded and said:

"That's it."

"If our army can build a pontoon to attack the water net, this water net can be used by me."

"In this way, even if the Chu army comes to help, I will be blocked by the water net."

Then he laughed again and said:

"Fell, it is Shen Bing who broke this beam city..."

"I don't know where Shen Bing came from so many ideas."

"Waterwheels, dumpers, trebuchets... there are floating bridges at this time."

"It's breathtaking."

"You two should take this Shen Bing well and don't let him make any mistakes."

"Otherwise, Da Qin will lose a member of the lucky general!"

Wang and Yang nodded and said yes.

Yang Duanhe was secretly surprised that Shen Bing could not be sent to any dangerous place in the future, otherwise the king would blame it...

Therefore, when Shen Bing and his party returned to Handan, they received an order to make a floating bridge before taking a break.

Shen Bing didn't know the significance of learning to make floating bridges in large quantities. He only knew that his superiors would give orders and follow suit.

To be precise, it is not to make pontoon bridges, but to teach other craftsmen and soldiers the method of making pontoon bridges.

To be more precise, it should be training instead of teaching floating bridges.

Because the floating bridge is relatively simple to make, the trouble is that it can be spliced ​​quickly.

If there is any trouble in the production, it is that the raft tends to be uneven and tilted.

I encountered a similar problem the last time I crossed the river.

It was just that the river was not in a hurry and there was an emergency repair, and finally a pontoon bridge was built that would not affect the crossing of the river.

Recalling Shen Bing at this time, he felt a little scared.

At that time, if the troops were unable to cross the river smoothly because of these problems, I was afraid that my head would not be able to keep it.

But these two problems are easy to solve.

Shen Bing said to Fatty Tun Hecang while drawing pictures on the sheepskin:

"If you find that some of the rafts are raised above the water, don't think that removing some of the raised parts can lower the height!"

Cang and Fatty nodded again and again.

Many of them made this mistake last time.

Shen Bing continued:

"On the contrary, we should add weight to the higher part."

"Of course the weight must be on the edges and not in the middle."

This is actually a balance between buoyancy and gravity.

Fatty Tun and Cang don't have to understand so deeply, they just need to know how to operate.

Seeing that the two had no objection, Shen Bing continued:

"More difficult is the balance problem!"

This is the most important thing, because if the wooden talisman itself is unbalanced, such as high on one side and low on the other, its wave resistance and sinking resistance will be poor.

If the plank is barely put on the shelf, the raft may start to roll in the water and the pontoon will overturn as soon as you step down.

It is not easy to solve.

It is indeed possible to increase the weight.

But the question is how much weight to add?

Where is the weight added?

This requires calculations and calculations and operations are not simple.

Not only is it time-consuming and prone to accidents.

Shen Bing knew that everything on the battlefield should be simple and easy to do. Once it becomes complicated, it is easy to cause trouble in a stressful environment.

So Shen Bing thought of a practical method:

"Unify the raft into a long shape."

"The timbers are interchanged end to end."

The imbalance of the raft is mainly caused by the buoyancy caused by the wood being thick and thin.

If the head and the tail are interchanged, the weight can be offset to a certain extent to make the whole more balanced.

Even if the imbalance is still not too large in the end, it is easier to adjust.

Fatty Tun and Cang took notes one by one and followed Shen Bing's words to operate. It was indeed much better than before.

Cang doesn't matter, he only needs to know the method to be satisfied.

But Fatty Tun was a person who wanted to know the principle. He stared at the raft by the river for a while, and it was nothing. He scratched his head and couldn't figure out what was going on.

Ugh!Is this to talk about buoyancy?