Daqin Engineers

The frozen "dyke" in the uppermost reaches is unable to stop the stored river water. They rely more on the power of the frozen river water from the lower layer for several miles to block especially the big bends.

This is easy to understand. If the river water at the big bend is frozen and loses its fluidity, the pressure from the river water will directly act on the bank instead of the ice layer downstream of the river.

What Xin did was to cut off the ice layer one by one, which was actually preventing them from borrowing each other's strength.

It is not difficult to imagine: As long as you cut enough, the upstream ice layer will collapse because it cannot withstand the pressure of water storage.

Xin may not know these theories, but he has been engaged in icebreaking for a long time and has gained experience to know these laws, so he "cuts" especially densely at big turns...

For other parts, that is, 30 steps in the downstream, a "knife" is cut, especially at large corners, at 10 steps.

Another reason is that the big bend is the "severe disaster area" that blocks the flow of water. If the broken ice blocks the river again and freezes it, all the previous efforts may be in vain or even more difficult to freeze again.

"More difficult" is said because after the ice is broken and blocked, many places will be in a mixed state of ice and water. Not only is it not easy to operate, but the ice is more likely to collapse and it is difficult to predict, adding a lot of danger.

Therefore, it does not count to "cut" the big bend every ten steps, but a few "cuts" in the vertical direction.

And the horizontal and vertical must be cut at the same time. When the "iron box" is insufficient, it even has to be divided into two halves or even three parts.

Wang Jian was a little confused, and asked Sun the reason, Sun replied:

"If you'cut' it horizontally and then'cut' it vertically, the melt water will flow to the horizontal ditch and it will freeze again."

"There will be a lot of trouble repeating this."

"Only when the horizontal and vertical operations are operated at the same time, can the water be continuously discharged from the ditch."

Wang Jian couldn't help but nod his head.

These various trades and professions have their own proficiency, and the interlacing is true as Geshan said.

After tossing around the big bend for two days, Xiong was very careful when he "cut" up again.

Every time, all the preparations are done to evacuate all the idlers and others, and then a few fast-moving people are sent to fire quickly.

Finally, after checking the situation, Xin reported to Wang Jian:

"General, it's the last moment of ice breaking and drainage."

"Should I drain it now or wait a few days?"

The question is whether to inform the downstream military and civilians to make full preparations.

You must know that the lower reaches of the river were also blocked by freezing, so it is no joke to put down the water that has been stored for more than a month.

Wang Jian thought for a while, then asked back:

"Will there be a problem with drainage a few days later?"

Xin answered:

"Subordinates can't guarantee."

"The reason is that the weather is unpredictable."

"If it suddenly turns cold and the upper reaches of the river are frozen again, I'm afraid it will take a lot of effort."

Wang Jian can understand this.

Wang Jian is not worried about time.

Because the grain in beams and Handan can last a few months.

Wang Jian was worried that if he let go of the opportunity for drainage, he might not have the next time.

For example, when the wave of cold current suddenly came, it was frozen for three miles, and after Qin Jun’s tossing for a few days, the three miles were "cut" and frozen for five miles...

The weather is definitely getting colder in the future, and you can imagine the faster the freezing speed.

If the speed of shoveling the ice cannot keep up with the freezing, it will be all in vain.

But if you say prepare... the downstream is definitely not ready.

It doesn't matter much in Handan.

A beacon tower has been set up in Handan. As soon as floods are found upstream, an early warning will be issued, and the troops will withdraw to high places where grain has been stored.

The problem is the big beam.

In order to have enough time, Ying Zheng agreed with Da Liang for two months.

But now it only takes one month to divert water, I'm afraid...

Wang Jian made a trade-off:

If you don't release the water now, you may never be able to release it, so you will lose everything.

And now the Daliang City may suffer losses due to lack of preparation, but it is clear that the Chu army surrounding the city will suffer even greater losses, and Qin Jun won basically without suspense.

Wang Jian believed that this comparison should not be delayed, so he decisively ordered:

"At this time diversion!"

Xin responded and waved a small flag to send a signal to his men.

With a "teng" sound, fires were ignited everywhere.

This ignition is different from before. Before, there were neat "cuts", but this time it was concentrated in several places on the dam.

Xin explained:

"It's like cutting a few gaps in the dam."

"These gaps and cracks will connect to each other, and the entire ice bank will collapse!"

Sure enough, just as Xin said, not long after the fire ignited, there were bursts of "quacking" cracks on the ice.

It sounded for a long time and then fell silent. Just when everyone was wondering, a few pieces of huge ice suddenly soared into the sky and took off into the air. The scattered ice even hit Wang Jian's hiding place dozens of steps away on both sides of the strait, scaring the guards. Hurried forward to protect Wang Jian.

Obviously, this situation was unexpected to Xin, only to scare him to hide behind the tree.

Then the ice layer was layered layer upon layer like dominoes, and the sound of collision was endless.

Soon after hearing the sound of "teng", a river poured down like a fountain. The column of water became bigger and bigger, and it soon mixed with the debris for a while and it was unclear which was water and which was ice.

The waterline quickly spread to both sides of the strait with fragments, only scared the soldiers to flee in a hurry, and some of the slow-running were swept in and disappeared instantly.

It took a while for the young woman to come back to her senses, and reported to Wang Jian in shock:

"General, it's done, it's done!"

Wang Jian nodded.

As the saying goes, it depends on the people and the sky, now it depends on whether the rushing river down this way can work.

Shen Bing on the other side certainly didn't know that the river had come.

The morale of the troops is much better than before.

This is a kind of inertial thinking of people.

At the initial change, that is, when Qin Jun was surrounded by Chu Army, he would be nervous for a while.

But as the day passed, they found that they were surrounded by them, and they took it for granted that the days to come would be similar, so they soon lost their minds.

Only Shen Bing knows that this is the beginning of the crisis.

Fortunately, I have found a solution, but I don't know how Wang Jian's ice-cutting is going upstream.

In order to make preparations in advance, these engineers are making rafts again... The rafts in the past had torn down the trebuchets because of lack of wood, and now they have torn down the collapsed houses in the city to make rafts.

Cang asked strangely:

"Brother, why do you want to make a raft again?"

"Could it be that Chu Jun wants to attack the main beam by water?"

Shen Bing didn't tell him the answer, just confessed:

"Do your business well, don't care about Chu Jun."

"You are already an engineer, and there are more than a hundred people under your hand. They are all looking forward to you."

"If you are negligent... I am afraid that even Chu Jun will not see you!"

Cang Ying did not dare to say more.