Lin Yifan, who was full of doubts, still tried to speak politely: "Elder, I'm here to read a book." ”

As soon as the words fell, the crane-haired and childish elder opened his eyes and shouted with a serious face, "Take out the token." ”

Lin Yifan was frightened, and the elder's tone was too serious, it was really terrifying.

With apprehension, he took out the permit token and respectfully handed it to the elder who was guarding the place to inspect.

The elder caretaker of the Hidden Scripture Pavilion took the token, checked it carefully, and only after checking that it was correct, did he open the door and let Lin Yifan in.

With a "squeak", the cave door opened.

Lin Yifan smelled a smell of books and was a little sullen.

Standing at the entrance of the cave, it is impossible to see the inside of the cave, because the cave is winding, not straight.

The door had been opened, and Lin Yifan was not lazy, and immediately went in.

Elder Crane Hair Tongyan who was guarding here did not stop him.

After getting this result, Lin Yifan finally felt at ease.

So as he entered, he looked around curiously.

When he stepped into the library cave, the door suddenly closed on its own, which startled him again.

After looking behind him and making sure that the elder hadn't bothered him, he relented and moved on.

The cave is brightly lit, there is no electricity here, no kerosene, but it can keep the lights on, mainly relying on the aura underground.

The forbidden circle absorbs energy and continuously provides burning energy for the lamp, so the lamp can last forever.

Along the road, step by step, Lin Yifan soon arrived at the place where the book was stored.

There is a large door with an opening in the door, and you need to insert a permission token to enter.

The reason for this obstacle is to prevent the guards and elders from favoritism or theft.

In addition, it is also to prevent criminals from taking high imitation tokens and escaping the eyes of the guarding elders.

This gate only recognizes the token of the Medicine Saint Refining, and the other tokens are not recognized, so only the only key can open this gate.

Lin Yifan understood why he was so cautious, after all, the treasures in it were all relatively valuable books, and they were likely to be unique, the kind that was unique in the world.

Without further ado, he immediately took out the permission token and inserted it into the hole.

As soon as the token was inserted, the door glowed, and then it opened automatically.

"Squeak!"

In an instant, a dazzling light refracted from the cave, and Lin Yifan seemed to be facing another world, which was incredible.

The golden light gradually dissipated, and Lin Yifan was gradually able to open his eyes and look at the situation inside the Library and Scripture Pavilion.

When the light was completely gone, he saw a golden library.

It's full of gold and brightness.

If it weren't for the shelves and books, he would have thought he was in a vault, or a royal palace.

"It's too luxurious!"

Lin Yifan couldn't help but sigh.

The decoration here is no less than the ancient emperor's house, and the materials are all of the highest quality.

Walking in and observing, he realized that the "gold" on the cave wall was not real gold, but a more precious ore than gold.

Lin Yifan was also drunk, in order to build this golden library, the medicine saint must have spent a lot of treasures.

There is no doubt that this library is protected from moisture, water and theft, and it is difficult for the books here to spoil because there are almost no bacteria.

After looking around, Lin Yifan found that the two sides of the cave were covered with bookshelves, and the shelves were full of densely packed books.

Most of these books are yellowed, and a few are new, and I don't know if they have been adapted.

Along the way, he saw a lot of martial arts cheats, alchemy cheats, and ancient text books.

Some of these books are the ones he knows about, because these martial arts and alchemy are the academics that the Medicine Sage has taught him.

In addition, there are some things that Lin Yifan doesn't know, these are ancient materials.

Lin Yifan will definitely choose those books that don't know the content to read, especially the kind of ancient text books.

These books are likely to record the whereabouts of a certain immortal ring, and if you look carefully, you may find some clues, otherwise the Medicine Saint would never have placed these books in such a high-level library.

Ancient characters, to be honest, Lin Yifan didn't know much, what he could understand was the ancient books he got from the Qingxu Immortal Cave Mansion and the underground palace of the Northern Xuan Immortals in combination with the learning skills taught to him by the Qingxu Immortals and the Northern Xuan Immortals.

To put it simply, it is to use the martial arts content he memorized, put it back to the original martial arts secret book word for word, and understand the meaning of those ancient words on the original martial arts secret book.

The time to enter the Scripture Pavilion was limited, so Lin Yifan immediately entered the state and flipped through these old materials.

Flipping through the pages, he can probably understand some of the content, but it is a little difficult to understand it completely.

Flipping through the pages, alternating one by one, Lin Yifan found that many of these ancient books recorded things about history, and there were records about the whereabouts of the Seven Great Immortal Rings, but none of them existed.

Looking at it, he gradually found that there were records about the Northern Xuan Immortals and the records of the Northern Xuan Palace, and there were also Qingxu Immortals.

It's just that the records of the Qingxu Immortals are a little vague, and there are almost no actual records.

Now, he finally knew why the major sects in the Central Plains Xiuzhen Realm knew the location of the Beixuan Palace and the existence of immortal rings in the Beixuan Palace, which turned out to be recorded.

The Northern Xuan Immortals were extremely famous in ancient times, in other words, they were very eye-catching.

In addition, there is another reason for his great prestige, that is, the Beixuan Palace really controlled a dynasty before, and the area of this dynasty is larger than the current Shenzhou Kingdom, which is really incredible.

Ancient books only record the prosperity of the Northern Xuangong, and there are few records as to why it declined.

In other words, the various sects didn't know much about the invasion of the void creatures back then.

Of course, this is just a guess by Lin Yifan, maybe the ancient books obtained by other sects record the situation of this world-destroying war.

Lin Yifan remembered what the Void Lonely Real Man said to him when he took An Qi away.

At that time, the Void True Man said that there were many big people watching him and telling him to be careful.

At that time, he understood the meaning of the real person in a second, but until now, he has not been "cared for" by any big people.

Therefore, I think that these big people may only know some news about the Void Immortals, and they don't know that the Void Immortals have a blue immortal ring, or they don't know what the Void creatures look like, so it's hard to decide whether the strange species they saw in the newspaper is a Void Creatures.

Still, he was noticed, and someone must have doubted him.