Lin Yun walked into the shelter tower and found that the spiraling stairs were spotless, and he walked up the stairs for more than half an hour before he came to the top floor of the shelter tower. In the last days, he did not really enter the Shelter Tower, which in that era was the faith of countless mages who survived for a long time, and it was a existence that could not be desecrated.

After coming to the top floor, Lin Yun found that this place was not empty, but there was a tight room, he walked over, found that the door was not locked, and with a slight push, the door opened, and suddenly a qiē in the room appeared in his sight.

This is a relatively spacious room, after Lin Yun walked in, he was surprised to find that a white wall was inlaid with small alchemy arrays, which was very similar to the control room of a magic energy battleship, Lin Yun had come into contact with many magic energy battleships, those were abandoned after the magic power of the Northrend world was exhausted, without the support of magic power, the magic energy battleship was indeed just a pile of scrap copper and rotten iron. For a while, Lin Yun also specialized in research.

Therefore, the first time Lin Yun saw the layout in the room, he thought of the control room of the magic energy battleship. He walked over to the wall, observing the alchemy circles made of countless runes, and the technology used by these alchemical circles was beyond his knowledge, and even beyond the magical civilization of the entire Northrend world......

It's just that most of the alchemy arrays are dim, which means that there is no magic support, and only one alchemy array is operating, Lin Yun took a closer look at it, although he couldn't figure out these advanced alchemy arrays, he could still see that part of the alchemy array. It played the role of sheltering the world of Northrend.

Deep down, he was shocked like a stormy wave. Including him, all the mages who survive in the last days. They all thought that the Tower of Shelter was used to shelter the world of Northrend.

But now it seems that this is not the case......

If it is only used to shelter the Northrend world, then what is the matter with these alchemy formations that have not yet been operational? The number of alchemy formations that have not been operated accounts for almost more than ninety percent. This shows that the role of the Shelter Tower is not only to protect the world of Northrend, but also far more mysterious than you think......

In this way, the purpose of building the shelter tower is worth scrutinizing, you know. It was only when the most precious magical materials in the whole of Northrend were exhausted that such a great building was built.

Its role is not only to protect the world of Northrend, but it is very likely to surpass the entire magical civilization, similar to the existence of magical warships......

Of course, these were all his conjectures, and it is impossible to know what the truth is......

After leaving the shelter tower, Lin Yun went to the empty and decaying library, in the last days. He spends most of his time in the empty and decaying library, where the books are all left behind by mages who were as powerful as gods in the peak of magic in the world of Northrend. It is the culmination of their life's experience and knowledge.

It is these books that have accompanied Lin Yun for more than 20 years.

He reached for a black-covered thread-bound book and gently patted the dust on it. This is a book left by a Heavenly Rank mage, which records his magical knowledge and experience. At first, Lin Yun knew nothing about it, and completely regarded it as a leisure book. However, looking back. When I opened it again, I suddenly found that the magical knowledge left by a heaven-level mage was so precious......

In the quiet library, there was a "rustling" sound from time to time, which was made by Lin Yun turning the pages. I don't know how long it took him to close the book back and put it back in its original place, and then he picked up the thick stack of books, lay down on the wooden table beside him, and read it intently.

He seemed to have completely oblivied the passage of time, tirelessly flipping through one book after another, and occasionally taking out a quill pen and doing some calculations on the manuscript paper.

He has long been accustomed to this rhythm of life, just like the more than 20 years of surviving in the last days, if he were someone else, he might be driven crazy.

During this time, he reorganized the magical knowledge he had mastered, and benefited a lot.

The manuscript paper on the wooden table has long been piled up, which is the result of calculating a large number of formulas.

Lin Yun carefully closed a book, put it back in its original position, and sat back at the wooden table, frowning and thinking. Turning over the books in the empty and decaying library, the problems that plagued him before were solved a lot, and his comprehension of magic went up several steps.

At this time, the whispering crystal in his pocket suddenly lit up, and when he took it out, he saw that it was a message from Leon Merlin, injecting a wave of magic into the whispering crystal, and suddenly Leon Merlin's joyful voice came out: "How is the situation on your side?" I am not in danger for the time being, but during this time, I have been fighting in the pale plane, and now the nine arcane rings have been completely fused and have become a real seventh-level magician, and for a while, even if it is an eighth-level magician, it may not be my opponent......

After receiving Leon Merlin's news, Lin Yun's brows furrowed even tighter, since he knew that this was an illusion, he had never been able to figure out what the person who arranged this illusion was for?

Do you want to trap them, or kill them?

No, no, no, this seems to be a redundant move, from the beginning of the alchemy puppets gushing out of the portal, you can see a little greasy, no more, no less, a total of ten, and the level of the alchemy puppets is accused of death, although the strength is not weak, but it definitely cannot pose a danger.

After that, there are the ten paths, and the people who arrange this qiē clearly want them to embark on different paths. Immediately followed by a seamless illusion, there was no imaginary danger in the illusion, but Lin Yun and Leon Merlin both got indescribable benefits in the illusion.

Just like Lin Yun, if he hadn't come to this illusion realm, how could he have returned to the empty and decaying library and done what he hadn't understood before? You must know that the magical knowledge he had comprehended during this time was extremely profound, and he might not be able to comprehend it even if he spent decades outside.

Leon Merlin has also gained a lot of benefits, after all, the arcane ring comes from the inheritance of the king of the Caucasus, and it is not an exaggeration to say that it is one of the top magic runes, the fusion of nine arcane rings is not something that can be completed overnight, and Leon Merlin has only been in the pale plane illusion for a long time, and now he has successfully fused, which is undoubtedly a shortcut, saving at least a year or two......

Thinking of this, a ridiculous thought suddenly popped up in Lin Yun's head, the value of this illusion realm should not be to help them improve their strength, right?

Shaking his head vigorously, he couldn't be sure based on these alone, he took out the whispering crystal, injected a few strands of magic into it, and called William Merlin, Rosmerlin, and Dragonblood Orcs respectively, and after doing this, he carefully put the whispering crystal on the table and waited quietly.

The Whispering Crystal, which can almost be said to be the most advanced communication alchemy tool in the Northrend world, can receive the message even if it is thousands of miles away, but the stability is too poor, after waiting for a long time, the Whispering Crystal finally flashed purple light, Lin Yun picked it up and saw that it was a message from Rosemerlin, and injected a wave of magic power, and suddenly Rosemerlin's hurried voice sounded: "Cousin Marfa, this is really incredible, do you know what strange things happened to me? After I stepped on that road, I inexplicably appeared on the Flame Plane ......"

"I didn't have time to think about it, Stan Watson of the Watson family actually appeared, and I was shocked at the time, wasn't Stan Watson killed by your cousin a long time ago...... Later, I fought against Stanwason, no way, there was a gap of several levels between me and him, the difference in strength was too great, and it didn't last long, and I was defeated by Stanwatson. However, it is unbelievable that after being defeated, he actually returned to the scene of meeting Stan Watson. ”

"I was defeated again and again, and I was on the verge of collapse. Fortunately, after every battle, there will be some new realizations, and the frequent battles have greatly improved my strength. Now it's a seventh-level magician, okay, I can't say any more, that bastard from Stanwason is here again......"

Rosmerlin's voice stopped abruptly at this point, Lin Yun was slightly stunned, although he had already known in his heart that Rosemerlin must be in a similar illusion, but he didn't expect that it would be such a result, defeated again and again, and repeated again and again, which is a bit too incredible......

Before entering the illusion realm, Lin Yun remembered very well that before Rosmerin entered the illusion realm, he was only a fifth-level magician, but how long had it been, and he was already a seventh-level magician.

This kind of progress cannot be described as leaps and bounds.

Lin Yun touched his nose, it seems that his guess is really right, this illusion is not only not dangerous, but can also help people improve their strength, but, how to get out of the illusion?

After waiting for most of the day, he didn't see the news from William Merlin and the dragon-blooded orc, he thought that the whispering crystal failed to send the message, after all, the whispering crystal was not very stable, and he just wanted to put the whispering crystal away, but suddenly flashed purple light, picked it up and saw that it was the news from the dragon-blooded orc's off-duty, and after injecting a wave of magic into it, the dragon-blooded orc's lazy voice sounded.

"Lord Merlin, what are you looking for me......

Just a short sound made Lin Yun's face gloomy, how could he not hear that the tone of the dragon blood orc at this time was exactly the same as when he had just woken up.

Holy, he's sleeping......

When is it, this bastard still has the heart to sleep......

"Where are you now?"

Lin Yun injected a burst of magic power and sent a short message to the dragon blood orc, and soon the purple light flashed, and a wave of magic power was injected, and the voice of the dragon blood orc sounded, but this time the tone was no longer lazy and lazy, but became very careful.

"Lord Merlin, how can I possibly know where this is...... I, I'm just a Highland orc. My lord, it's so weird here, I became very sleepy when I first came in, and then I fell asleep inexplicably, and I just woke up. However, I seem to have gotten a little stronger, so I should ...... It should be a ninth-level great sword master. (To be continued......)