At the call of the goblin king Kaka, the refugee goblin begins to return from the library white ball.

After returning, they immediately followed Kaka's instructions and began to clear the castle that had been turned into ruins.

And all this is just to pay Yang Yu his due reward.

Watching Li Yan and the others leave, Yang Yu naturally talked about the topic of reward. Yang Yu said that he still hoped to be spiritually satisfied more than material rewards, and he mentioned the white ball placed in the skyscraper library.

The white ball can obtain the location of the book based on the prompt information, which cannot be accomplished simply by using manpower.

Kaka also told Yang Yu about the operating mechanism of the white ball without reservation. If the white ball does not have the support of the fairies and the fairy secret treasure, it will be just a very ordinary magic weapon after all.

Every time a book is stored in the library, the content and storage location of the book will be transmitted through white balls to the fairy's secret treasure, saved as data, and turned into one of the huge databases.

Whenever others search, the fairy will pass the information obtained back into the fairy's secret treasure, and then process it by the secret treasure, searching downwards with the title, introduction, title, and content according to the keywords in the book.

After finding the appropriate books, the reserved location information will be given in turn, and these information will be transmitted back to the fairy's brain, screened and sorted by the fairy, written on a white ball or passed to the human brain.

After hearing this, Yang Yu naturally thought of using the fairy's secret treasure to obtain all the knowledge he needed.

He offered the reward he hoped to Kaka, the king of the fairy, which was to check the knowledge he wanted through the fairy's secret treasure.

Kaka thought for a while, but finally decided to agree to Yang Yu.

Although the knowledge stored in the secret treasure comes from the Library of Everything, over the years, the work of maintaining the secret treasure of the fairy has been done by the fairy, and the Library of Everything has never given anything for it.

Perhaps in the eyes of the Library of Everything, putting knowledge into the secret treasure of the fairy is equivalent to distributing knowledge to the fairy, and they no longer have to pay anything for it.

In fact, the efforts made by the fairies to maintain the secret treasures far exceed the imagination of the library of all things.

Since the library believes that the knowledge they give is rent, there is nothing wrong with sharing this knowledge that belongs to them.

The fairy rescued by Yang Yu tried his best to move the gravel. Thanks to this, the gravels in the castle were quickly moved, and a red square glass appeared in the center of the castle, which was the after-all road to the place where the secret treasure was located.

Kaka directly passed through the square red glazed glass, slowly opening the square glazed glass from the inside, revealing a downward staircase.

Yang Yu and his group followed Kaka deep into the ground and came to an empty square room. Several green vine-like objects were wrapped around each other in the middle of the room, lifting up a crystal ball with white light.

That is the secret treasure of the fairies. The fairies call this secret treasure "Wanzhi".

The light of the white crystal ball shone on every inch of the room. Bai Jin stretched out his hand, and the man felt that the crystal ball exuding the same magic power as Kaka, but the magic power was even more intense and abundant.

It is obviously so honorable and abundant, but the outside world cannot feel the existence of this crystal ball, as if it is deliberately blocking his existence.

"What is the knowledge you want to query? You're welcome, just check it."

Oas wanted Yang Yu to quickly search for clues about his brother, but she only saw Yang Yu take out a few papers full of words, and then took out a brand new booklet.

"Do you have so many things to check? I think you can wait until you find my brother before checking them. The most urgent thing now is to find my brother."

Faced with the clues that were so close, Oias could not contain his excitement after all, and wanted Yang Yu to quickly infer where his brother was and then act immediately.

However, Yang Yu just said in an orderly manner: "I can understand your mood, but that cannot be an excuse for us to be unscrupulous. We must investigate everything step by step, so as to ensure that we are stable and strong on the road."

Oias wanted to say something, but Yang Yu blocked her mouth.

"We will leave the Library of Everything this time and come back next time. We will definitely encounter many difficulties during this period. You don't want to give up halfway through our journey, right?"

Oias stopped talking, but just nipped his silver teeth and looked away.

He has always been more long-term than what he considered this time. Perhaps it was really what he said that if he was not prepared, even if he left his younger brother, he would not have a safe way to leave the human world and return to the village.

In the end, Oias could only use this method to convince herself to accept Yang Yu's decision.

"Although you can serve multiple people at once, if you want to check the specific content, it may cause stuttering in the output information and others find that we are looking up the library's book content. So, I still hope you can check it one by one."

"I can understand that it's enough to leave me alone here. You don't have much meaning to stay here. Bai Jin, Iath, I thought about it and I'd better send you two back to the ground first. Yiath continues to learn about human knowledge from the library, and Bai Jin, you continue to learn magic knowledge with Tik and Liyan, and strive to master new skills as soon as possible."

After saying that, Yang Yu just asked a question through the Fairy King Kaka, like the Fairy's Secret Protection.

Then he turned around and planned to leave the Fairyland for the time being, first deal with the special library countermeasures committee that was eyeing them outside, so that Yingluo and Lotkar could regain their freedom, and then return to the Fairyland to search for the knowledge they wanted.

Naturally, you can copy the knowledge you need by copying the electronic version, and you don’t have to worry so much. You have to pull out books from the bookshelf and then search them one by one.

Kaka allowed Yang Yu to leave the Kingdom of Fairy and then return. There were still many people left to deal with the black gas, so there was no problem in causing Yang Yu to bother him several times.

A few minutes later, several people reached a consensus.

They left the basement where the secret treasure was located, were wrapped in the magic of the fairy king Kaka, and slowly drifted towards the blue sky of the fairy country like a balloon, and came to the white balls of the library through the thick clouds.
Chapter completed!