Long before Zhang Qi feasted Wen Tianxiang, a patrolling swordfish boat was circling around the patrol route and then heading back. Everything looks normal, but if it were not for the cover of night but for day, it would be easy to see a person hanging on each side of the ship.

Zhao Hunting on the left, Shi Yang on the right, and Wang Ping'an attached to the stern of the boat - the reason why he temporarily decided to take Wang Ping'an with him was because Wang Ping'an said that he could find the weak point in the bottom of the boat.

Zhao Hunt and the three of them were able to take the "convenient boat", but they did not control the patrol of the swordfish boat. There is no need to make extraneous branches at this juncture, because the head of this swordfish boat patrol is one of the peripheral members of the crow.

It is precisely because of this internal response that this operation has the possibility of success. Otherwise, even the warship would not be able to get close, let alone talk about arson and saving people.

Well, Neiying is a creature that is not used only by Zhang Jue, and the Crow Organization is an expert in playing this.

However, the "boat" could not send them to the finish line, so they could only get as close as possible to the warship, and they had to stop outside the warning range, otherwise it would be regarded as a violation of the order. This warning is 80 feet away, and there are few people in the world who can dive such a long distance in the sea without surfacing to breathe. At least Zhao Lie and Shi Yang can't do it. And once it surfaces halfway, it is possible to be discovered by the patrol guards on the warship or patrol ship, and the plan is aborted.

Therefore, how to sneak across this eighty zhang distance without alarming the Yuan soldiers has become the key to success or failure.

"Brother, we can't go any further, we can only send it here." The sign on the ship bent down and bowed slightly, "I wish you all the best - if you can't do anything, get out as soon as possible, it's all young brothers......"

Zhao Lie couldn't return the salute by holding the side of the boat with both hands, so he could only nod and thank you. The two sergeants on board struggled to lift a wooden box and slowly lowered it into the water. The wooden box is very heavy, but fortunately, the box area is large, and there are several floating sacs hanging around it, although it does not enter the water, it does not sink.

Zhao Lie, Shi Yang, and Wang Ping'an respectively pulled up the ropes tied to the wooden box, straightened them in three directions, waved their hands to the brand head and the sergeants on the swordfish boat, took a deep breath, and plunged into the water at the same time.

In terms of water, the three of them are all white stripes in the waves.

Zhao Lie's profession requires him to be a strong swimmer, and after graduation, he was assigned to Beihai, and he also found time to get a lifeguard license.

Shi Yang was born in the Tiger Wing Water Army, and it goes without saying that he is watery. Wang Ping'an is a boatman, and he is a good hand in both the inner lake and the sea.

In fact, Zhao Lie's six-person team is all very good, including Ma Nanchun, a showman. The reason why the Ding family sisters and brothers were not allowed to participate was because this plan not only required good water quality, but also considerable physical strength.

However, even Shi Yang, who boasted of having the best water ability and holding his breath for the longest time, could not dive eighty feet in the waves and rapids.

"At most, twenty-five zhang must be ventilated, and eighty zhang must be ventilated at least three times. If you drag heavy loads, you have to do it four or five times. Shi Yang said after three consecutive tests at dusk at the beach.

Zhao Lie and Wang Ping'an also did the test, requiring four times of ventilation and more times of dragging heavy objects.

How to solve this dilemma?

Under the water, three people wearing tight water leanings each use ropes to pull the wooden box, and swim forward in a zigzag shape. They tried to follow the direction of the rushing waves, calibrating their orientation through the hazy lights on the water surface.

In the middle of March, the evenings are quite cool, and the sea temperature is even lower. Rao is three people are wearing tight single clothes and water support, and they are still exercising, and they still feel the chill of cold skin. Fortunately, it's just a skull, and there is no piercing bones, so it can be endured.

After diving for twenty zhang, Wang Ping'an first reached out and pressed Zhao Lie's legs and feet, which meant that he needed to breathe. Zhao Lie pressed Shi Yang's shoulder beside him again. So the three of them slowly stopped, each took off a ball-like inflatable leather from his waist, pulled out the cork, and put his mouth up to take a deep and long sip.

That's right, airbags.

Among the things that Zhao Lie asked Ouyang Guanhou to prepare, the most important one was the air bag. First, I found a few skin water bladders, found a skillful woman and sewed a few stitches densely to ensure that I did not run out, and then sewed a intestine finger-shaped suction mouth, and then went to the iron smelting shop to fill enough air with a blast skin bag, tied it tightly, and made a simple air bag.

One such airbag can dive 60 feet for one person, just to reach the target. Each person brings three, enough for one round trip, and one extra spare.

When Ouyang Guanhou saw this airbag, his expression was the same as seeing the "net pocket", and he finally understood that Zhao Lie was not crazy, he was serious.

Due to the infiltration into the warning area, there is no swordfish patrol, and the warship patrol is too far from the water, and there is a dark bonus, which is difficult to detect.

A moment later, the three heads of the gasping air came out of the sea, and above their heads were the warships of the Yuan army. However, because of the surging tide, they deviated from their goal, which was the warship on the left flank, and their target was the handsome ship in the middle.

The three of them adjusted their breath, checked the wooden box and rope, and after making sure that there was no problem, they soaked up the air, nodded to each other, and dived at the same time.

After a stick of incense, the three of them successfully dived under the handsome boat. Zhao Lie and Shi Yang each grabbed the wooden box with one hand and the attachment at the bottom of the boat with the other, waiting patiently.

Wang Ping'an stuck to the bottom of the boat, touched here and picked there, and began to look for weak points.

During the Song Dynasty and the following centuries, the ships were all wooden boats, which sailed on the sea for a long time, and the bottom of the ship was attached to various marine organisms such as seaweed, corals and shellfish. As a result of the adhesion of a large number of marine organisms, it not only reduces the speed of sailing, but also increases the weight of the ship's hull, and may corrode the seam adhesive of the ship's deck, causing unpredictable risks. Therefore, seagoing vessels need to go to the dock regularly to clean up the attachments on the bottom of the ship, but unless they have just been cleaned, there will be attachments on the bottom of the ship more or less.

It was on these attachments that Zhao Lie and Shi Yang were able to keep their bodies stable and not be swept away or sink by the waves.

And the weak point that Wang Ping'an is looking for is the gap between the planks of the ship that has been corroded by marine organisms.

The waves rushed against his body, cold and nervous, making him shiver. The salty water soaked into one-eye, and he had to squint, his eyes could not see, his ears were filled with seawater, and he could not hear anything—but he did not need to hear, nor to see, he only had to touch.

The large, calloused rough hand slid over the sharp oyster shell, but it didn't feel pain,

When he touched a place two feet above the waterline, Wang Ping'an looked happy, took out a copper coin from his sleeve pocket, and plugged it hard at the gap between the two planks.

Wang Ping'an sighed lightly, narrowed his one-eyed, pulled out his short blade and made a circle, then swam to Zhao Lie's side and gave him a thumbs up.

Zhao Lie handed the rope to Wang Ping'an, let him and Shi Yang continue to keep the wooden box balanced, took out an iron awl from the leather bag, according to Wang Ping'an's instructions, touched the copper coin, pulled it out, the tip of the cone was fiercely tapered in, and then began to twist.

This iron awl is the second thing that Zhao Lie asked Ouyang Guanhou to make—an iron awl with spiral patterns.

In this era, there were no threaded ironware, and the Song people, whether they were making furniture or building ships, used a mortise and tenon structure, and used wood to bite each other to achieve a stable structure. There is such a thing as threads, don't say you don't have it, you have never heard of it. So when Zhao Hunt brought it up, the blacksmith was stunned for a while, not understanding what it was, but in the end it was cast by the mold turning method. Although it is not very regular, after manual filing, it is barely usable.

Zhao Lie turned the slotted wooden handle hard, and the iron cone was screwed in little by little. With no focus on both feet, only one hand available, and the constant shaking of the hull, it was quite difficult. It was very difficult at first, and it took half a day to drill an inch, but the more you went to the back, the smoother it became.

After drilling into a third, Zhao Lie was exhausted and changed to Shi Yang. Shi Yang was also exhausted and drilled into a third more.

Zhao Lie held the iron cone with both hands, and the whole person hung up, shaking vigorously for a while, and the iron cone did not move at all.

"It's finished." Zhao Lie motioned for the two to cut the rope of the wooden box and open the box.

Shi Yang and Wang Ping'an have always been curious about what was in the wooden box, but Zhao Lie never said it or let them see it, so the two of them had to be stuffy gourds. At this moment, when the two of them opened the wooden box, their eyes widened - an iron bucket, a very heavy iron bucket. There are strange handles, and there seems to be writing on the barrel noodles, but I don't recognize any of them.

What is this thing? Isn't it going to set fire? How do you get an iron bucket?

Wang Ping'an: "Gunpowder in the barrel? ”

Shi Yang: "It can't be fierce fire oil, right?" ”

Zhao Lie smiled mysteriously: "It's much more powerful than these." ”

Of course, it is much more powerful, because this "iron bucket" is a must-have for future generations at home and needed by every household - gas cylinders!

The black gun base is not only a black workshop but also a living area for the black gun gang, so naturally this tool for making a fire and cooking is indispensable. Everyone knows how terrible this thing is to explode.

After Zhao Lie learned that Wen Tianxiang would be sent to Beijing by sea, he came up with the idea of blowing up the ship with a gas cylinder. In order to implement this plan, he worked tirelessly to transport the gas cylinders all the way from Yishan to Yinpingshan, and then from Yinpingshan to Haifeng Wharf, and then went all the way to the Marshal ship. At this moment, it is finally the time for it to show its might.

Zhao Lie struggled to hang the gas cylinder on the iron cone, stuck it with a word handle, patted the bottom of the boat, and smiled: "It's time to eat." ”