Datang: Li Shimin begged me to rebel

Li Shiji led the army and looked at the scene in front of him in amazement. At this moment, near the mouth of the Yalu River, dozens of sailing ships with unique shapes are going upstream. Although their speed is not fast, because the river flows at the mouth of the sea. Slowed down, so it is not difficult to go upstream here.

And they didn't go too far, but at the place where the river at the mouth of the sea narrowed, the boats began to gradually approach each other.

These are not big, with a displacement of about 500 tons, and their shape is different from that of sea ships, more like inland ships. The belly part in the middle is more bloated. The length of these ships is about 50 meters, and the width The width of the middle deck is about 15 meters.

And their sails are located at the bow and stern, and the middle deck of the ship has nothing, but is very flat, and the middle deck is a uniquely shaped steel plate.

When they began to approach each other, the steel plates with a width of about four meters in the middle and a thickness of 50 mm were unfolded from the left and right. When the steel plates were unfolded, a steel plate with a length of 20 meters, a width of 4 meters and a thickness of 50 mm was immediately formed.

And this unique steel plate has a special buckle on the edge. When the ship arrives at the designated position, the engineering personnel on the ship first quickly lowered the sail and dropped a huge anchor made of reinforced concrete.

The reason why reinforced concrete anchors are used is that if these anchors are not easy to collect, they can be discarded directly.

After the anchor stabilizes the river bottom, the anchor chain is pulled by manpower and the pulley block structure on the ship to adjust the position of the ship, and then quickly gathers all the sails, and then quickly brings the ships closer to each other through the ropes connected to the ships on both sides.

After the ships approached, the engineering soldiers quickly connected the steel plate buckles on both sides with thick steel bolts.

A ship closest to the edge of the river rushed directly to the shoal of the river, allowing it to run aground close to the river. The edge of the extended steel plate extending from the ship was quickly driven directly into the ground with a long steel drill.

On the river, ships quickly approached and connected with each other. In less than five hours, a steel bridge with a total length of about 1000 meters and more than 50 unique sailing ships was built on the Yalu River. superior!

When the entire bridge was built, the faces of the soldiers of the Tang Dynasty standing by the river and watching were full of shock!

Even the generals like Li Shiji were shocked, let alone other ordinary soldiers.

Although the Yalu River is not as majestic as the Yellow River and the Yangtze River, people in the past have never had the ability to build bridges on such a wide river!

But now, Datang can build a bridge in just a few hours!

How powerful is this? !

"Your Highness also invented this?" Hou Junji asked.

"Yes! I never thought that the construction of such a pontoon bridge could be completed in such a short period of time, and there are such special ships. The most important thing is that they are built on such a huge river, and this This kind of pontoon bridge can be dismantled at any time, that's the most important thing." Li Shiji nodded seriously.

"Your Highness is really familiar with military books. There are many things that are common to us, but His Highness can always invent unbelievable things." Hou Junji and the others also expressed emotion.

They were shocked by such a new form and super fast speed, but they were not surprised by similar methods.

Because this kind of pontoon troops and armies of various countries seem to have configurations in later generations, but in fact, China has been playing it for more than 2000 years.

A similar pontoon bridge, as early as 50 years after King Qin Zhaoxiang, built the first military pontoon bridge in human history on the Yellow River at Pujin Pass in Yongji City, Shanxi later.

Floating bridges have been built at this location in various dynasties in later generations. In the seventh year of Song Kaibao, the first floating bridge was built on the Yangtze River. The yellow and black dragon boats used are almost the same as those in later generations.

This is why, after more than 1000 years, Sun Tzu's Art of War can still be respected all over the world.

Because of things like the art of war, the ancestors have long been tired of playing with all the methods.

As for what kind of situation you can use it, it depends on your own ability to master it.

"Cross the river!" Li Shiji gave the order directly after confirming with the pontoon troops.

All are built by [-]-ton ships, and the bridge deck is a pontoon bridge made of steel plates, which allows six people to cross the bridge at a running speed in a column on this bridge!

That is to say, if the [-] infantrymen of the Tang Dynasty lined up neatly and ran across the river, they would be able to pass within nine hours!It took Hudar's [-] troops to cross the Yalu River in three days!

This is because they cross the river by boat at the narrowest point, without bridges.This is because they have mobilized a large number of ships, otherwise, this time will only be longer.

Of course, the actual passage time of Datang was slightly longer than this, because not only a large number of cavalry rode directly across the river, but also large engineering equipment also had to pass through the bridge.

But even so, it only took three more hours. When Li Shiji and the others crossed the river in the middle of the night, there was a loud explosion sound from the direction of Black Bone City in the distance!

It was Datang's army that took advantage of the night to blow up the walls of Black Bone City.

It is estimated that by the time of dawn tomorrow, the battle in Black Bone City will have its result.

But that is not what Li Shiji is responsible for. That is Xue Wanche who is attacking Black Bone City, and then Datang's soldiers will go directly to Pyongyang!

It is estimated that Yuangai Suwen in Pyongyang will know the news of the fall of Black Bone City by tomorrow. I hope he will misjudge the time when the Tang army crossed the river, and at least three days will be ushered in for Datang.

At that time, Datang can choose a suitable battlefield, and even directly arrive at Pyongyang to launch the final general attack on Goguryeo.

Because Goguryeo has always had scout operations along the Yalu River, they were driven away by the Datang Navy, and there must be Goguryeo soldiers stationed on the other side of the Yalu River near Black Bone City.

They will get news when Black Bone City is broken, so it is impossible to hide this news from Yuan Gai Suwen anyway.

But it doesn't matter, because Li Shiji has already communicated with Li Daozong of Silla. When they crossed the river, [-] Tang elites had gathered, and the Silla Army of tens of thousands of Silla auxiliary soldiers also launched an attack under the leadership of Li Daozong. .

It is no exaggeration to say that without any preparation by the enemy, the city-breaking mine is enough to blow down any city wall.

When the city wall cannot protect the enemy, Datang's rain of arrows and medium-sized bed crossbow are enough to become the nightmare of all enemies.