When the battleship left land again, there were no outsiders on board.

When passing by a large island in the sea, the name of this island was Tamna at this time, and Jeju in later generations.

The boat slowly came to a halt against the island.

Cao Yan climbed the watchtower with the group of happy children on the boat.

The next event is what they are most looking forward to on this voyage.

Inside the cabin, someone carried out a rectangular wooden box.

Stacked, on the deck of the ship, around the turret.

Someone opened the clasp of the wooden box.

When the lid of the wooden box is opened.

As long as modern people take a look, they will know that they are all cannonballs with a metallic luster, and the shells of these shells are all made by Cao Yan, and the current technology is not enough to produce this thing.

The gunpowder in the shell is glycerin, which is produced to make soap, and after nitration, it is made of Dana explosives, a new strong explosive made by adding wood pulp and silica.

Cao Yan didn't know their power and didn't want to expose them, so he found an opportunity to bring them to the sea for experiments, which is why he didn't bring Luo Ming and those second ancestors this time.

Cao Yan put a large wooden board in front of him and pasted a piece of paper.

On the top of the paper, parabolas are drawn.

Cao Yan held a bamboo stick in his hand, first pointed to the paper, and then pointed to a direction of the island, "Wait, let's use different angles to fire in the direction of the shore, and then you are measuring the distance, and marking the value on this paper, so that everyone can have a rough idea in their hearts in the future, understand?" ”

"Understood, but eldest brother-in-law, can you let the two of us go and shoot? We don't understand that! Lin Erzhuang, a scumbag, rubbed his hands with Lin Sanzhuang's two brothers, and flattered Cao Yan with a dog's leg.

Cao Yan glanced at it with disdain, these two big-shouldered, round-waisted, simple-minded fools, waved his hand, "Get out." ”

"Hehe, thank you eldest brother-in-law, thank you eldest brother-in-law."

The two brothers happily climbed down the watchtower and ran towards the turret of the ship's main guns.

And the gun jacket covering the barrel of the turret has been lifted and tucked aside.

There were already two people in the turret, operating the cannon.

Outside the turret, many people were lining up according to the force value.

"What happened to you two coming down?" Lin Dazhuang and Lin Dahei, who were in the turret, watched the two brothers Lin Erzhuang come in, and asked a little puzzled, because at this time, shouldn't they follow Cao Yan and learn the so-called cannonball parabola?

The two brothers rolled their eyes, and hurriedly said, "It's the eldest brother-in-law, who asked the two of us to open fire, and he said that he was afraid that the two of you would not use it." ”

"Pap" and "Pap" two crisp sounds, and then a loud scolding sounded, "Gua Wazi, you still want to deceive us, when Lao Tzu set off the cannon, you two little rabbits didn't know what explosives were!" Now run in front of Lao Tzu to pretend to be a big-tailed wolf? Get out—"

The faces of the two are not good, they will definitely not believe that Cao Yan will say this, Cao Yan usually asks them to do the matter of igniting explosives, how can they call the two little children now to say that they can't set off guns, isn't that a slap in the face?

Just like something engraved into the genes, since playing with bombs with Cao Yan, these things that can fall apart with just a little fire, this group of people who have played with them can be regarded as addicted.

With the advantage of the highest force value on this ship, the two finally grabbed the first opportunity to test the cannon called artillery, and at the same time, they were secretly glad that the second lady's uncle didn't let her come this time, or maybe it wouldn't be their turn to do it, and now the two little kids who haven't grown all their hair want to come to cross the bar, don't they want to die? This is also for the sake of the two of them being their own sons and their friends' sons, otherwise Lin Dazhuang and Lin Dahei feel that Lin Erzhuang's legs will be discounted by them.

When the two brothers ran out of the turret with their buttocks covered, the people queuing up at the door also didn't give them a good look, they all heard the conversation in the turret just now, and then each of them slapped their butts again, "Get out!" ”

At first, these people thought that they wanted to convey Cao Yan's order to let them in, but they didn't expect that the ambition of these two brothers was not small, and they wanted to be the first to shoot the cannon, isn't this looking for death? Haven't you seen so many people lined up?

Looking, the two brothers rubbed their buttocks and climbed up again, and the other children present all laughed and held their stomachs.

These smart children have long known that this will be the result, and now unless Cao Yan personally takes them down, they will have the opportunity to fire such a shot, and if they go down by themselves, those adults will not show them the face of being children and let them play.

"Hey, why don't you fire down there?" Lin Heizi asked deliberately curiously.

"Hehe......" Laughter suddenly came from all around.

The two brothers, giving him a blank look, did not speak, and hid aside, but still looked at the position of the turret with resentment from time to time.

……

"First 65 ° to the right, 15 ° angle, two shots in burst."

A loud voice beside Cao Yan, who was instructed by Cao Yan, took an iron horn and roared below.

Then I saw that the turret began to rotate, the barrel was pressed down, and Lin Dahei and Lin Dazhuang adjusted the barrel to the value engraved with a height of 15 degrees and a horizontal right angle of 65 degrees.

"Everything in place!" Lin Dazhuang's loud voice came from the turret.

Cao Yan snapped his fingers, stretched out his index finger, and pointed forward.

Lin Heizi, who was beside him, hurriedly shouted to the below: "Release!" ”

The two of them pulled the fire door.

"Bang!" "Bang!" The ship shuddered twice, then the sound of cannonballs breaking through the air was heard, and finally a loud explosion and skyrocketing fire rang out in the distant mountains.

"Tsk! Unexpectedly, such a small cannonball is almost as powerful as the big barrel last time, and the eldest aunt is getting more and more powerful now. Lin Dahei said with emotion. He was referring to the gunpowder that bombed Jiulongzhai last time, it was still black huo medicine at that time, and it was not very airtight, which may be compared with this fully airtight shell that is also a strong huo shell.

"Cut, big black brother, don't sigh, it's time to change." Someone shouted anxiously from behind the turret.

……

"Angle 30°"

……

"Angle 45°"

……

"Angle 60°", "Angle 75°",

When all the angles on Cao Yan's diagram have been shot through one round of shells.

A group of people went down from the ship and took ropes to measure the distance of the cannonballs.

……

"Auntie, there are four craters at a distance of about 12 kilometers, there are also four craters at a distance of about 20 kilometers, and at a distance of 24 kilometers, there are only two." Everyone told Cao Yan about the statistical data.

After hearing this, Cao Yan nodded, and on the previous piece of paper, the parabola was completed.

The 15° and 75° ones should be the four craters of 12 km.

30° and 60° are about 20 km.

The farthest one should be the 45° one.

After Cao Yan finished the picture, he said to the group of children in front of him: "You can draw a few more pictures of this picture and show it to everyone, remember to keep it secret and don't pass it on." ”

"I know, but Auntie, there are still a lot of shells, isn't it for everyone to play again." Someone in the crowd asked.

As soon as these words came out, the children present all stared at Cao Yan with tears in their eyes.

If Cao Yan doesn't speak, then everyone shouldn't want to fight with those adults.

"Well, let each of these farts play for a round first, and then you can play, but pay attention to safety, by the way, remember to leave twelve boxes of shells for backup, don't finish the fight." Cao Yan was stared at by the pitiful appearance of these little children, and when he felt cold, he couldn't bear it with a little heart, and opened his mouth to command.

"Ou! Thank you, brother-in-law! The children jumped happily one by one.

When the fire was fired again, it was the twelve cannons on the ship that began to shell in turn......

And Cao Yan stood on the watchtower, silently calculating the coverage of the fire during the salvo.

……

By the time the ship slowly left the shore and sailed into the sea, the island was already in shambles.

Cao Yan looked at the four smoking islands, and always felt that something was wrong, and after thinking about it for a long time, he suddenly slapped his head and shouted, "Hold the grass, this place is a good place to raise horses!" Why did I get my brain pumped and let you do the scourge? ”。

There was silence all around...... Everyone looked at Cao Yan a little worriedly.

"You won't be allowed to fire guns here in the future." Cao Yan had a dark face, looked at the four smoky islands, and commanded helplessly, now I can only look forward to a sea breeze soon, bring a heavy rain, and extinguish the fire.