Long before Zhang Gui hosted Wen Tianxiang, a patrol boat was surrounding the patrol route and then sailing back. Everything seemed normal, but if it were not for the night to cover it but instead of daylight, it would be easy to see a person hanging on both sides of the ship.

Zhao Lie on the left, Shi Yang on the right, and Wang Ping'an was attached to the stern of the ship. The reason why he decided to take Wang Ping'an with him was because Wang Ping'an said that he could find the weak points at the bottom of the ship.

The reason why Zhao Lie and the other two were able to board the "soft ship" was not that they had controlled the patrol of the swordfish boat. There was no need to dare to make trouble at this critical moment, because the patrol of the swordfish boat was one of the members of the outer members of the Black Crow.

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

Well, this kind of creature is not only used by Zhang Gui, and the Black Crow Organization is an expert in playing this.

However, the "spoke boat" cannot send them to the end. They can only get as close to the warship as possible. They have to stop outside the warning range, otherwise it will be considered a violation of the order. This warning distance is 80 meters long, and few people in this world can dive in the sea for such a long distance without floating out of the water to breathe. At least Zhao Lie and Shi Yang cannot do it. Once it surfaces in the middle, it may be discovered by the warship or patrol guards on the patrol ship and planned to abort.

Therefore, how to cross the 80-meter distance without disturbing the Yuan soldiers will become the key to success or failure.

"Brother, we can't leave any further, we can only send it here." The sign on the boat bent over and bowed slightly, "I wish you a smooth life - if you can't do anything, get out as soon as possible, all young guys..."

Zhao Lie held the boat's side with both hands and couldn't repay the gift, so he nodded and said thank you. The two soldiers on the boat struggled to lift a wooden box and slowly put it into the water. The wooden box was very heavy, but fortunately, the box was large and there were several floating bags hanging around it. Although it was in the water, it did not sink.

Zhao Lie, Shi Yang, and Wang Ping'an respectively picked up the rope tied to the wooden box, stretched it straight in three directions, waved to the sign head and the soldiers on the Daoyu boat, took a deep breath, and pierced into the water at the same time.

In terms of water nature, the three of them are all white-lined in the waves.

Zhao Lie's profession requires him to be a swimmer. After graduation, he was assigned to Beihai. He also took time to take the lifeguard license.

Shi Yang was born into a tiger-winged navy, and his water nature was beyond words. Wang Ping'an was a boatman and was a good player in both Neihu and at sea.

In fact, Zhao Lie's six-member group was all very good at water, including the handsome man Ma Nanchun. The reason why the Ding siblings did not participate is because this plan not only requires good water quality, but also requires considerable physical strength.

However, even Shi Yang, who claims to be the best water quality and holds his breath for the longest time, could not dive in the waves and rushes for eighty feet.

"The maximum is twenty-five zhang, and the maximum ventilation is 80 zhang. If you drag a heavy object, you will get four to five times." Shi Yang said this after going to the beach to test three times in a row at dusk.

Zhao Lie and Wang Ping'an also did a test, requiring four ventilation times, and the number of times to drag heavy objects was more.

How to solve this problem?

Under the water, three people wearing tight water leaning against each other, each pulling the wooden box with ropes, swiming forward in a font shape in front of the two, one behind. They try to calibrate the direction along the direction of the tide and the hazy lights on the water surface.

In mid-March, it was quite cool at night and the temperature in the sea was even lower. Even though the three of them wore tight single clothes and covered with water, they kept exercising, they still felt the coldness of the cold skin. Fortunately, they were just skin-bent, without any tingling, so they could still bear it.

After swimming twenty feet, Wang Ping'an first reached out and pressed Zhao Lie's legs and feet, which meant that he needed to breathe. Zhao Lie then pressed Shi Yang's shoulder beside him. So the three of them stopped slowly, took off a ball-like inflatable leather between their waists, pulled out the plug, and put it on with their mouths to take a deep and long breath.

That's right, airbags.

The most important thing Zhao Lie asked Ouyang Guanhou to prepare was the airbag. First, he found a few skin bags, found a skilled woman to sew the stitches tightly to ensure that the air was not discharged, and then sewed a finger-shaped suction port in the iron smelting shop. Then he used the blower skin bag to fill up the air, tie it tightly and seal it, and then made a simple airbag.

One such airbag can allow one person to snorkel for sixty feet and reach the target. Each person brings three, enough for one to go back and forth, and one more spare.

When Ouyang Guanhou saw this airbag, his expression was the same as when he saw the "net bag suit". He finally understood that Zhao Lie was not crazy, he was serious.

Because they sneaked into the early warning area, there were no swordfish patrols, and the warship patrols were too far from the water surface and had dark bonuses, which was difficult to detect.

A moment later, the three people gasping for breath came out of the sea. The Yuan army warships above their heads. However, because of the rushing waves, they deviated from their target. This was the left-wing warship, and their target was the coach ship in the middle.

The three of them evenly adjusted their breath, checked the wooden box and rope, and after confirming that there was no problem, sucked the air, nodded to each other, and dived at the same time.

After one stick of incense, the three of them successfully sneaked under the coach's ship. Zhao Lie and Shi Yang each held the wooden box with one hand, grabbed the attachments at the bottom of the ship with the other hand, and waited patiently.

Wang Ping'an leaned against the bottom of the boat, touched here and there, and began to look for weaknesses.

The sea ships built in the Song Dynasty and hundreds of years since then were all wooden ships. When wooden ships sailed on the sea for a long time, the bottom of the ship would be attached to various sea creatures such as seaweed, corals and shellfish. The result of the attachment of a large number of sea creatures not only reduces the navigation speed, but also increases the weight of the hull, and may corrode the adhesive between the boards, causing unpredictable risks. Therefore, sea ships need to go to the dock to clean the bottom of the ship regularly, but unless they have just been cleaned, there will be more or less attachments on the bottom of the ship.

It was because Zhao Lie and Shi Yang were able to keep their bodies stable and not be washed away by the waves or sink.

The weakness that Wang Ping'an wants to find is the gap between the shipboards corroded by sea creatures.

The waves surged, hitting his body, the coldness and tension made him tremble constantly. The salty sea water soaked into one eye, forcing him to squint, his eyes could not see, his ears were filled with sea water, and he could not hear anything - but he didn't need to listen, nor did he need to see, he just had to touch.

The rough and calloused hands were slashed over the sharp oyster shells, smeared over the sharp wooden stubble at the bottom of the boat, and swept over the barbed seaweed... Wang Ping'an was unaware of it. He volunteered to do this, and he must do it. What is the point of cutting a little skin and exploding some blood?

When Wang Ping'an touched a place two feet above the water line, he looked up a copper coin from his sleeve, and inserted it hard at the gap between the two boat boards. When he let go of his hand, the edge of the copper coin was clamped steadily, and the hull was shaken and did not fall off.

Wang Ping'an let out a sigh of relief, narrowed his one-eye, pulled out his short blade and drew a circle, then swam to Zhao Lie and gave him a thumbs up.

Zhao Lie handed the rope to Wang Ping'an, let him and Shi Yang continue to balance the wooden box, take out an iron awl from the skin, follow Wang Ping'an's instructions, touch the copper coin, pull it out, and tap it hard in, and then start twisting.

This iron cone is the second thing that Zhao Lie asked Ouyang Guanhou to do - an iron cone with spiral patterns.

There were no threaded iron tools in this era. Whether the Song people made furniture or built boats and houses, they used mortise and tenon structures, and used wood to bite each other to achieve a stable structure. Threads, let alone not to mention not, have never heard of them. So when Zhao Lie proposed it, the blacksmith was confused for a long time and didn't understand what it was, but in the end they were cast using the mold turn method. Although it was not very regular, it was barely available after manual filing.

Zhao Lie turned the shape of a single-shaped wooden handle with force, and the iron cone was screwed in bit by bit. Since his feet had no focus points and only one hand was available, and the hull was constantly shaking, it was quite difficult. It was very difficult at first, and it took him half a day to drill one inch, but the smoother the further he reached the back.

After entering one-third, Zhao Liejin was exhausted and replaced by Shi Yang. Shi Yang was also exhausted and entered one-third.

Zhao Lie held the iron cone with both hands, hung it up, shaking it hard for a while, and the iron cone remained motionless.

"It's done." Zhao Lie signaled the two to cut the rope of the wooden box and open the box.

Shi Yang and Wang Ping'an were always curious about what was in the wooden box, but Zhao Lie never said it and did not let them see it. The two had to act like a muffled gourd. At this moment, when the two opened the wooden box, they stared at each other - an iron bucket, a very heavy iron bucket. There were strange handles, and the surface of the bucket seemed to have words written, but none of them knew each other.

What is this? Don’t you want to set fire? How can you get an iron bucket?

Wang Ping'an: "Is there gunpowder in the barrel?"

Shi Yang: "Can it be hot tin oil?"

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

Of course it is much more powerful, because this "iron barrel" is a must-have in the kitchen and a necessary home - a gas cylinder!

The Black Gun Base is both a black workshop and a living area for the Black Gun gang, so it is naturally indispensable for making fire and cooking tools. This thing explodes so terrible that everyone knows.

After Zhao Lie learned that Wen Tianxiang would be transported to Beijing by sea, he came up with the idea of ​​using a gas cylinder to bomb the ship. It is safe, reliable and powerful. A 10-liter gas cylinder can be used as a bomb. As long as the position is selected properly, it is not impossible to sank a wooden ship.

In order to implement this plan, Zhao Lie worked tirelessly and drove the big green mule all the way from Mount Yi to Yinping Mountain, then from Mount Yinping to Haifeng Pier, and then dived and sent it to the bottom of the Yuan soldiers' ship. At this moment, this long trip was finally over, and it was time for it to show its might.
Chapter completed!