"W-This is amazing! Magnetic pointers, whether they are record or permanent, will be obsolete by this thing! Lick~"

The eldest brother, Perospero, was the first to realize the great value of this thing, and he couldn't help but sigh in shock and excitement.

He is 26 years old as the eldest brother, but he has not yet been able to come up with a decent invention, and Mousse has this great invention that can change the whole world before he is 7 years old......

The talent gap between people is too big, right?

The magnetic field on the path of the Great One Piece World is disturbed, which greatly affects the accuracy of the magnetic pointer.

Especially in the new world that subverts common sense, in the process of sailing, you even have to rely on the experience and intuition of navigators to find the one closest to the right direction from the different indications of multiple pointers, and many times it is not even as good as the life card.

But the gyroscope invented by Mousse is different, because the direction of the gyroscope is always the same, no matter how chaotic its magnetic field is, it will not cause the slightest interference.

After its popularization, the shipping efficiency on the great route will usher in a qualitative leap!

For this world dominated by marine civilization, the significance of shipping efficiency improvement is far more than just saving freight!

However, Mousse's immediate purpose in inventing this device was to allow it to sail straight and backward to determine the true and accurate straight-line distance between the islands.

Because the original voyage in the New World required navigators to constantly correct the direction of the magnetic pointer according to their own experience and intuition, the actual route was not a fixed straight line, but an irregular curve that would vary from voyage to voyage, and it was impossible to accurately determine the true straight line distance between distant islands.

Therefore, Mousse invented the gyroscope at the same time, and also equipped it with automatic timing and drawing devices, and then let his "big head" of Homiz go to redraw all the charts around the world.

Since the "Big Head" has flown at a speed of more than 500 kilometers per hour and never gets tired, and is at a high altitude with a wide field of vision, the drawing efficiency is incredibly high.

Within a few days, the map was open to the Red Earth Continent and found the very distinctive Sun Tree Eve, the Holy Land of Mary Joy, and the G1 branch of the Navy located below it.

Then Mousse discovered that this naval base was less than 900 kilometers away from Wanguo, and although it exceeded the coverage radius of the eighth sister Charlotte Bret's mirror world, it was still within the diameter, so a seemingly simple but highly imaginative plan was born in Mousse's heart......

"We can send a boat to take Sister Bray to the big mirror 500 kilometers away from the house to wait, to make sure that the scope of the mirror world can cover the big mirror at home, while my mother, second brother and I will take a ship that is not very important and not distressed to lose and go to the G1 branch of the Navy, which also needs to be equipped with a large mirror......"

Speaking of this, the three people present had already understood that with the mirror world as the back road, even if it was really a trap, everyone could escape safely.

Perospero put down his hanging heart, but was still a little lacking in confidence in the success of this attack:

"Just mom and Katakuri, with only one boat, this power is not enough, right? How to capture the heavily guarded G1 branch of the Navy? As far as I know, there are hundreds of large-caliber heavy artillery pieces in the fortress alone! Mom is not afraid, but what about the ship? ”

"Even if it is the highest fortress gun, the maximum range cannot reach 10 kilometers, so why don't we park the ship outside the range?" Mousse replied with a wink.

Perospero didn't ask what to do if the navy was killed, because it would be easier to deal with, but he still had doubts in his heart: "Hiding outside the range is not afraid of being hit, but we can't hit each other either!" ”

"Well, just rely on your mother, and you still need to shoot? Right, Mom? Ten kilometers away, it's not difficult for you, right? Mousse said to his mother with a cute smile.

To Perospero's shock, Charlotte Lingling really nodded, and even Katakuri, who had been extremely cautious since that tragic incident and would not make even the slightest mistake, did not raise any objections......

Could it be that Mom's power is already so terrifying?

Perospero had seen his mother punch a distant cloud, but the G1 branch of the Navy was an incomparably strong coastal defense fortress!

However, his mother and second brother were full of confidence, and Perospero could only give up persuasion wisely, and then he was left with only one last bit of worry:

"Mom, you and Katakuri have left the world, and if there are sea pirates who take the opportunity to attack...... Do you want to coordinate with them first? ”

It is said that it is other sea thieves, but now that Roger has been arrested and Kaido is "missing", in fact, it is only Whitebeard who may attack the countries and can pose a serious threat.

Although Charlotte Lingling is now very confident, she is still afraid of this old "partner" who is also from the Rocks Pirates, and immediately takes out the phone bug and dials the number that has not been called for a long time.

But Mousse spoke out at this time to dissuade:

"Mom, don't call, the scale of the white group is too big and mixed, the world government must have an inside line, as soon as you make this call, the world government will probably know immediately, in case there is a suspicion that the two of us are going to join forces, and change the plan and not send Roger to Rogue Town for execution, then the plan will not be able to carry out......"

"So what do you say? I can't completely ignore him, Newgate doesn't have a good relationship with my mother and me......", Charlotte Lingling put down the oversized phone bug in her hand and asked Mousse.

Mousse shrugged his shoulders and said that there was no need to worry about it:

"Our family also has an inside line in Baituan, right? Just let them keep an eye on Whitebeard's movements, as long as Roger didn't leave on the day of his execution, then he wouldn't have time to hit the nations before we returned, Whitebeard can't fly and can only take a boat, how can the speed compare to our shortcut through the mirror world? ”

So the matter was settled, and for the next month, BIG· The MOM Pirates are preparing for this.

However, because all that needed to be specially prepared was a small ship and a large bulletproof glass mirror specially made to avoid accidental damage, and there were only four people in the know, so outsiders were all kept in the dark without exception.

Originally, Mousse was still a little worried that the talkative eldest brother Perospero would accidentally leak the news, but the second brother Katakuri, who knew the latter better, asked him to relax.

It turns out that Perospero can only keep his mouth shut when he (thinks) the chance to win, and now he is still pessimistic, and he will never dare to leak out a single sentence......