Lu Bu's plan to rescue Pang Tong still has a technical problem.

That is, it was easy for their fleet to enter Feishui from Chaohu.

But if you want to enter the city of Hefei through Feishui without alarming the city guards, this is an almost impossible task.

Lu Bu thought of this problem, and then summoned Zhou Yu and Gan Ning and asked them if they had a solution.

Gan Ning smiled and said, "Lord Qiqi, in fact, among the sailors, a kind of diving boat has been made. The whole ship sank about half a foot underwater, and from the shore, there was no diving boat to be seen. We can sneak into Hefei with a diving boat. ”

"After waiting for Pang Tong and Pang Tong's old mother to be rescued, send a warship to meet outside Hefei City, and it will be safe!"

What the?

Now the navy has actually built a diving boat?

In fact, the dive ship is the prototype of the modern submarine!

Of course, the diving ships in the navy are certainly not comparable to modern submarines.

But at least it was enough to deceive the sight of the defenders on the shore.

However, what made Lu Bu quite curious was how they came up with the idea of making a diving boat.

Because as far as Lu Bu knows, in the original historical trajectory, the advent of real submarines will be postponed until at least one thousand three or four years later.

However, Lu Bu soon remembered that the idea seemed to have been provided to the shipyard by himself.

As early as when the shipyard began to build ships, Lu Bu transmitted various modern shipbuilding concepts to the shipyard's technicians.

Of course, the advanced ideas instilled by Lu Bu were all technologies that could be realized during the Three Kingdoms period.

At that time, it seemed that Lu Bu had mentioned the principle of submarines.

After that, Lu Bu basically didn't ask about the shipyard.

Unexpectedly, they actually built a diving boat.

With the diving boat, they can sneak into Hefei City without knowing it and go to rescue Pang Tong.

However, for a while, it was really difficult for Lu Bu to imagine what the diving boat they built looked like.

Now even Lu Bu is starting to be curious.

Then, under the leadership of Zhou Yu, Lu Bu personally saw the diving ships of this era.

After seeing the diving boat, Lu Bu had to admire the ingenious craftsmanship of the craftsmen of this era.

The size of the diving boat was very small, and after waiting for people to enter, the internal space was all closed, and it could only accommodate four or five soldiers.

The air needed to breathe is solved by a vent that is directly connected to the surface of the water.

There is also the acquisition of sight, which is also done through a periscope.

Therefore, this diving boat, in the daytime, is actually still in danger of exposure.

In fact, it is not a diving ship in the strict sense of the word.

The power of the diving boat is done by manually shaking the propeller that rotates the crank, which is quite slow.

Underneath the calm water, the speed is about the same as that of a normal person walking at a fast pace.

At present, the practical effect of diving boats is very poor.

There are too many shortcomings, the speed is very slow, the number of layoffs is small, and it is easy to be exposed during the day.

And because it is necessary to maintain the absolute enclosure of the interior space, it is very troublesome to enter and exit every time.

There is still a long way to go for diving ships to be used in real combat.

But no matter how many shortcomings there are, at least when it comes to rescuing Pang Tong now, it just happens to come in handy.

Originally, Lu Bu was going to send the soldiers of the God of War Battalion to rescue Pang Tong.

However, in the end, I chose the water army.

Because in addition to the sailors of the army, the fighters of the God of War battalion do not know how to operate diving ships at all and have no relevant experience.

In the end, Lu Bu decided to personally lead the team to set off, dispatched fifty sailors, and infiltrated Hefei City.

……

That night, Lu Bu dispatched a hundred warships to enter Feishui from Chaohu Lake.

Then, ten miles outside the entrance of Hefei City, fifteen diving boats were lifted out of the transport ships.

After all the soldiers entered the cabin and sealed it completely, they were put into the fertilizer water one by one.

Then, fifteen diving boats quietly dived into the city of Hefei under water.

Ten miles away, the diving boat took about half an hour.

Then, fifteen diving boats swaggered into Hefei City from the entrance, under the noses of the defenders of Hefei City.

Liu Miao had long heard of Lu Bu's magical legends, and now he knew that Lu Bu's army had just been driven out by them.

Now the earthlings - eh, the Han people all know that the god of war Lu Bu likes to attack the city the most, and he has repeatedly succeeded, and rarely loses it.

Therefore, Liu Xuan's defense in Hefei City was not tight, and he basically used one-third of his troops to defend.

But what Liu Miao never expected was that their enemy would sneak in quietly from under the water without knowing it.

Entering the city of Hefei, the diving boat passed through the waterways crisscrossing the city, little by little, approaching the courtyard of Pang Tong under house arrest.

The existence of Pang Tong is not a secret in Hefei City, and many people know about it.

The courtyard of Pang Tong's old mother, who was under house arrest, at least inquired carefully, and it was not difficult to find out.

Regarding this news, Liu Miao was basically defenseless.

Because he never imagined that someone would sneak into the city to rescue them.

Therefore, these messages have long been passed on to Jia Xu by the staff of the CIA.

Then, Lu Bu stopped in a rather hidden place that was very close to the courtyard of Pang Tong, where he was under house arrest and surrounded by aquatic plants.

Then the inner wall of the dive boat will be expanded, the buoyancy will be increased, and the dive boat will slowly rise up.

It took another half an hour for everyone to climb out of the boat, and all of them were brought to the shore and hidden.

Lu Bu left ten sailors to take care of the diving boat, and led the remaining forty sailors to quietly approach the courtyard where Pang Tong's old mother was under house arrest.

The defense in Hefei City is also very tight.

However, the strict place is in the Assassin's Mansion, and Liu Miao is afraid that Lu Bu will behead him.

As for the defense elsewhere, it is much weaker.

After all, it was impossible for Liu Miao to send all his troops out and put the entire city of Hefei under martial law.

If this is the case, then his soldiers don't have to want to rest, they will be tired and collapsed.

Therefore, under the leadership of Lu Bu, they easily touched the courtyard of Pang Tong's old mother who was under house arrest.

Outside the compound, it was found that there were two groups of soldiers guarding the compound.

There were a total of twenty soldiers in both teams.

If it's the warriors of the God of War Battalion who come this time, they're the best at silent killing.

Forty people secretly solving twenty enemy troops is definitely an easy and pleasant thing.

But now Lu Bu is bringing a navy, and he is not good at this.

Therefore, the task of solving twenty enemy troops could only be handed over to Lu Bu to complete.

Fortunately, in order to better monitor, the locations of these two teams of soldiers are relatively scattered, otherwise, it would be really difficult for Lu Bu alone to solve so many people silently.

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