Don had long noticed that some of O'Hara's guards were really mediocre in combat.

Even compared with ordinary naval soldiers, their comprehensive quality and combat ability are far behind.

Shaking his head, he dispelled the thoughts in his mind, this island that treats the archaeological vision as a faith, it is simply too reluctant for them to fight, and the style does not match at all.

Flipping through the Devil Fruit Illustrated Book, he immediately saw many familiar appearances on the number of pages in it.

"Natural fruits, animal fruits, superhuman fruits."

The first few pages of the illustrated book are all natural, the middle is the animal department, and most of the back ones are superhuman, and the classification is very clear. After reading through it, Don noticed that the natural system was less numerous than the other two departments, and the superhuman system was the largest.

In it, he finds the Thunder Fruit he had eaten, as well as the Explosion Fruit.

It's not much different from what he once thought, the explosion fruit he ate was really not the fruit of the mucus man in the original book, but the superior of those two fruits, and he had the ability to have both fruits, and had greater potential and efficacy.

In just a few moments, Don finished flipping through the Devil Fruit Illustrated Book. There were many fruits that he was familiar with, but he did not understand, and many of them, which he had never seen before.

"Dark Fruit."

In the last pages of the Department of Nature, he saw the fruit.

His eyes narrowed slightly, and Tang En's eyes were a little solemn.

A brief introduction to this fruit, but the ability in it made him feel palpitations.

"Create a black hole and deprive the fruit of its ability."

Just two points show the horror of this fruit.

It can be said that compared to the sea and the sea building stone, this devil fruit is the real natural nemesis of many capable people.

It seems that its appearance is to counterbalance the Devil Fruit ability, or even the extermination ability.

After carefully reading the introduction of this fruit and noting down his appearance, Tang En put down the Devil Fruit Illustrated Book and picked up another book on the side.

"Devil Fruit Conjecture!"

The name of the book is simple, just like that, but when Don turns the pages, he finds that this book is unusual.

"Devil fruits, a strange fruit that has been passed down in the world, have long caused endless conjectures in the world."

"In my life, I have been investigated in many ways, traveling to many places, and tracking the traces of the Devil Fruit."

"I've finally found some clues."

The man in the book is a man who calls himself Tu Ansi.

Tu Ansi said in the book that he found a total of 23 Devil Fruits in his life, including six natural, ten superhuman, and seven animal. He didn't keep the fruits for himself, but after studying them for more than a decade, he threw them into the sea and left them to wander again.

From the records of his predecessors, as well as his own research, Tu Ansi finally determined a secret about the Devil Fruit.

"This strange fruit called the Secret Treasure of the Sea is actually very likely to come from the mainland!"

Continent?!

Don saw this, his eyes flashing with strange colors.

"It was originally very likely that it was a special invention of ancient humans, and it was not used for special purposes, not for combat."

"It's more about improving people's living standards and expanding the efficiency and output of daily necessities!"

It continues to be recorded in the book that when Don turned the pages, he found that the book was worn in many places, and the pages were full of traces of history.

Don was amazed at the conjectures and speculations in the book.

Devil fruits were not originally used to change human power, but to improve people's living standards.

"In many places, I have found that the Devil Fruit, a strange fruit, has the function of changing the form of matter and enhancing its use, and it can be used not only for humans, but also for objects."

"To be more precise, its original purpose is to use objects, change the form of matter, and enhance the function of matter!"

Tu Ansi's conjecture made Tang En dumbfounded.

"In ancient times, human beings thought differently from today, and this group of human beings, their ideology, has reached a high level, and they take harmony and progress as their core ideas."

"The weapons of ancient humans, as well as the Devil Fruits, may be products of that era."

"It's just that this strange fruit seems to have been completely changed because of a great war, flowing from the continent to the sea."

"And along the way, the fruit mutates, and it can give humans great power."

"There is nothing magical about the fruit itself, but when combined with humans, intelligent and creative creatures, it can explode with great power."

"Its purpose has changed, and the legend of the Devil Fruit has been passed down in the world ever since."

The conjecture of the Devil Fruit in the book simply made Tang En feel incredible, and he also felt that this person named Tu Ansi had a huge brain and an open mind.

And, in order to prove his conjecture, evidence of various arguments was also found, which was pasted in the pages of the book.

Archaeology is rigorous, but it is also open, and this Tu Ansi scholar has a rich imagination and dares to do and think.

After reading the book, Donn sighed deeply, admiring the enterprising and exploratory spirit of this group of scholars.

All his life, just to prove an argument that may be fundamentally wrong, such a faithful and fanatical attitude is not inferior to some martial arts idiots in the martial arts.

After reading a book, Donn's mood fluctuated, and he returned home after saying goodbye to Dr. Cloba.

Robin had already returned early, and when he saw him coming, an expression of excitement appeared on his face.

"Don, you're back!"

"Well, I went to the Ancient Tree Library today to check some materials, and I benefited a lot."

Don nodded and smiled.

"The Ancient Tree Library, is it a library under the Ancient Tree? Wow, you can actually get in there? ”

Robin said loudly.

"Dr. Kloba allowed me to go in and check something."

Don En Dao.

"I really envy you, but when I pass the doctorate exam, I will be able to enter the following to learn more knowledge!"

Robin said proudly again.

"Exams are coming up tomorrow, are you confident?"

Don asked with a smile as he touched the little girl's head.

"I'm still a little nervous, but I've worked hard and I'm confident that I can still get by."

Robin said.

"That's good, go to bed early today."

Don laughed.

The two sat in front of the sofa, chatted for a while, and fell asleep early.

The next morning, Robin got up early to take the exam, while Don followed behind, preparing to go to the Ancient Tree Library.

There are many books in the Ancient Tree Library, and many things are very useful to him.

Even if he can't become a scholar here, it is a great help to him in terms of knowledge.

But just as he arrived in front of the ancient tree, the phone bug that had been silent in his arms suddenly rang.

Stopped, Don frowned, the appearance of the phone bug was a little familiar, but a little unfamiliar.

"Hey!"

"General Donn, long time no see."