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Eight or nine hundred people, over a mountain beam, and after walking out for seven or eight miles, they stopped.

The Goguryeo people who are familiar with geography are looking for a good place.

The place where they store water around the river is in a valley, which can be said to be a natural reservoir.

Not far from the valley is a bend in the river, where the flow of water has been slowed down a lot.

So, on the turn side, the team had to stop.

But this place is not far from the camp of the Goguryeos, but across the mountain, there must be Goguryeo people wandering upstream, and it is not how vigilant the Goguryeo people are.

Rather, it is to survey the upstream water situation, once it rains upstream, here below, corresponding preparations will be made, these are basic common sense, needless to say.

But the Sui army can't take care of that much.

After a little discussion, Li Bi took two hundred people to stay in place, and the rest of the people dispersed, a team of fifty people, who went up the hill, and those who went to the river went to the river, and soon controlled the entire bend of the river.

Then, Chen Yuan, Cheng Zhijie, Luo San, Chen Er, and other tall and big-shouldered guys all became laborers, cutting down trees, cutting off branches and leaves, and when the sky was dark, they made six or seven round long trees.

At this time, gather the people and horses, cross the river, and when the sky is dark, eight or nine hundred people no longer have to worry about anything, they all gather by the river.

It's like a ritual, waiting until the moon rises in the middle of the sky. One after another, the logs were lowered into the water.

I watched the logs float and soon disappear into the night. A group of people felt dark and hurried up the mountain.

Stumbling along the way. I don't know if anyone is lost and left behind, anyway, they are all very worried, even if Li Po came up with this idea, I don't know if this can break the dam of the Goguryeo people.

At the end of the day, there's not a single person here who has experience with that.

If the logs are all stranded, if the dams of the Goguryeo people are stronger, if the water is not strong enough...... That can only fight with the Goguryeo people's real swords and guns.

Especially after scaring the snake. Although there is still a chance of victory, the Sui army from top to bottom will never doubt its combat effectiveness, but if there are casualties, it is not easy to say.

In fact, all worries are unnecessary.

The dam built by the Goguryeo people is quite decent.

The material of the dam is all stones. Mainly wood, they first set up a dam wall in the middle of the valley to further slow down the flow of water. Then, at the exit of the valley, there is the real dam.

But such a temporary building. It is impossible to ensure quality and quantity, and according to the craftsmanship of the Goguryeo people. It is also impossible to make a dam very strong.

Perhaps a moderate rain upstream will fall and the dam will burst.

They were lucky. So far, there has been only a light rain upstream, which has raised the water level of the river a bit, but it has not caused much danger.

Of course, this is also directly related to the fact that Sashui is not a big river in the first place.

Unfortunately, the Sui army had already sneaked upstream, and they still knew nothing.

In the dark night, the logs floating in the water went down the river without encountering any obstacles, but the distance was a little short, and the current was not too fast.

So, it's not that fast.

However, it was much faster than the soldiers of the Sui army who climbed the mountain in the dark.

When the Sui army had just walked out and was only a mile or two away, the log had already reached the first dam set up by the Goguryeos.

The dull sound of crashing echoed in the valley, but it was not a loud sound, and it did not alarm anyone, and the Goguryeo people who stayed here were busy all day, and they slept deeply.

However, the second muffled sound sounded, and the dam let out a groan, which was a bit louder.

There was the man who had slept lightly, and he woke up in a daze, and looked at the dark river.

Before they could see clearly, a third muffled sound sounded.

The simple dam, which could not help but be destroyed, finally coughed in pain, and the chain reaction showed that the river level was not high, with many gaps, and the water flowed through like a thick pile, and the dam that was driven into the water collapsed in several places.

The screams and screams of the Goguryeo people immediately resounded through the valley, but they still couldn't suppress the rumbling sound of the dam collapsing into the water one after another.

The water level in the valley, although there is a drop, is very high.

The dam here upstream is not under much pressure, and the dam downstream is the key.

Most of all the water level drops, as well as the pressure caused by the storage of water, are concentrated in the downstream dams.

Whether it is to confuse the enemy or to reduce the amount of water that the dam is bearing, the dam downstream will release water at any time, so that they are reinforcing the dam and storing water at the same time.

Such a project, if the architect Yu Wenkai is replaced to do it, as long as he is given enough manpower and a few pieces of wood, he may not be able to make a contribution.

But in these years, there must be no transnational projects, well, it can't be said that there is no, Sifang City is still standing in Liaodong City.

In any case, when the upstream levee collapses, the results are catastrophic.

It's not a matter of a few logs, the wood and stones that have collapsed upstream have gone down the river into this small reservoir, and many of them have drifted to the shore, but many of them have rushed to the main dam at the mouth of the valley.

The sound of the embankment bursting, roaring, kept stirring in the valley, like a muffled thunder, and across a mountain, the Sui army could hear it clearly.

Immediately, suppressed cheers rang out in the ranks.

Li Po, who was walking in front of the team, also breathed a sigh of relief, what a good idea, it was said that it was a sword that went off the rails, cutting, and it was the right way to fight life and death?

A useful idea is a good idea.

While walking, while complacent, I didn't stay, I stumbled under my feet, and suddenly fell on my head, fortunately, it was black, no one could see it, and I got up with a bone, but my mood was not affected much, and it was still so good.

But I still complained in my heart, how good the Goguryeo people are to build roads, I don't know, if you want to get rich, you must build roads first? What the hell are you going to build a dam......

At this time, at the foot of the mountain, disaster has already happened.

This is a man-made natural disaster, and it is much less powerful than a real natural disaster.

Of course, the Goguryeo people stationed on the shore would never think so.

As long as there is a gap, or a crack or something, the result of the dam is usually the chain collapse of the entire dam.

The Goguryeo people didn't have the time or the skills, but they repaired the damage and kept the dam intact.

By the time the levee burst happened, most people had woken up, but they couldn't react much.

In fact, there were more than 8,000 people stationed here, and only 1,000 Goguryeo defenders were part-time overseers, and the rest were Goguryeo people.

In the art of using people's power, there is a world of difference between the King of Goguryeo and the Sui Emperor Yang Guang, if you really want to say it, he only occupies a ruthless word.

Of course, the living conditions of the Goguryeo people do not need to be described too much.

On this night, the fate of all the people in the camp was no longer to see how noble they were and whether they had knives, but luck.

As soon as the embankment broke, the Goguryeo people who woke up can be said to have fled in a swarm.

The water broke through the levees and raged out of the valley, which was obviously the peak of the water's front, and of course, its destructive power was far less than when it was raging down and getting faster and faster.

However, the narrow river could no longer accommodate its stout body at this time, and the Goguryeo camp was affected at that time.

When the wave hit the Goguryeo camp, the peak of the wave was several feet tall.

Both the men and the tents collapsed at the touch of a touch under the rolling waves, and the horses were thrown into the air like toys, falling down, and disappearing into the water like anything else.

The fleeing crowd, pursued by the giant beasts behind, were swallowed in batches.

The scene at this moment was spectacular and cruel, and most of the people who could witness it turned into fish and turtles.

Only a few people fled up the mountain, and a few lucky enough were on the outskirts of the camp, most of them Goguryeo officers and soldiers guarding the area.

The big water rushed here, and some follow-ups were weak, and the place where the big water preferred to go was always downstream.

Therefore, the camp of the Goguryeo people was only affected because it was too close to the river bank.

Before dawn, the water here actually receded.

The whole camp was in a mess, the corpses of people and horses could be seen everywhere, and more were swept up by the water and rushed downstream.

The surviving Goguryeo people finally returned to the camp one after another in shock, and began to search for survivors and rummage through baggage under the leadership of the surviving and relatively high-status people.

In fact, everyone here has nothing but fear for the rest of their lives.

Before the military order arrived, the dam collapsed first, which was to be beheaded.

And they never imagined that the real danger would come from the attack of the Sui army.

However, after such a toss, the so-called golden body of the Goguryeo god of war was half stirred.

Later history, most of them say that the Goguryeo people originally built a dam on the upper reaches of the Sashui River, wanting to flood the Sui army, but they didn't want to, the dam collapsed first, but they lost thousands of soldiers.

However, the later generations with big brains said that the Sui army was aware of it, first broke the dam and released the water, and then argued endlessly, but there was no basis for research, and it could not be recorded in the official history.

However, in the end, some people found some clues when they flipped through the Sui Shi case files......

But that's all a matter of later generations, at this moment, Li Po, as the initiator, has already climbed the mountain, and the people around him are gathering more and more.

Everyone began to sit down and rest, check their swords and guns, and prepare for battle.

(Originally, Ah Cao wanted to arrange a fight, but then I thought about it, there were too many troubles, and I needed to check and fill in the gaps, so Ah Cao was lazy and replaced it with a strategy, a little taken for granted, everyone don't spray, Ah Cao continued to work hard...... (To be continued.) )