In the next two days, Zhan En devoted all his thoughts to studying the application of the "Evil Eye" spell. Although it was only an auxiliary spell and didn't possess strong attacking power, Zhan En was still enthusiastic about it. On one hand, he found this auxiliary spell to be very useful; on the other hand, he also needed something to pass the time, as in the entire plan, the underground city would always remain behind the scenes. Zhan En didn't want to draw too much attention to himself and would rather let the gray dwarves handle these troubles. He didn't need to worry about Kardak's side either; that gray dwarf official didn't have the guts to come looking for trouble when facing a human attack, otherwise Zhan En wouldn't mind letting a certain part of Brandon Stone Castle "accidentally collapse", rendering that indestructible turtle shell useless.

  Of course, it is undeniable that "the book of all laws" was also one of the reasons that attracted Zhan En.

  The player's enthusiasm is not to be underestimated, especially when there are rewards in front of them. Soon, Zhan En discovered the other two uses of the "Evil Eye".

  Using the "Evil Eye", Zhan En can open a map to cast this spell on any location. This allows him to transcend thousands of mountains and waters, as well as heavy obstacles, to see clearly what is happening in the place he has marked. However, unlike before, this spell can only cross spatial boundaries but cannot perform clairvoyance. Moreover, it can only see a small area clearly, and the magic consumption is still the most among all purposes. In other states, Zhan En releasing 50 points of magic value can maintain the "Evil Eye" for one minute, but if it is to disperse the war fog in the distance for surveillance, it can only last for 5 seconds. Moreover, the larger the scope of surveillance, the longer the time, and the more magic consumption. It can even be said that this is the only spell among the three spells Zhan En currently possesses that consumes more than recovery. Therefore, when using it, Zhan En must firmly grasp the consumption of magic.

  As for the fourth usage of 【Evil Eye】, it is to search for various mysterious items. This function was only discovered when Jain accidentally used 【Evil Eye】 on Verna, but this isn't surprising. Although Jain is the master of the underground city, those ordinary magical items are meaningless to him. The physique of the demon tribe also guarantees that even if he were naked, he would be much stronger than those guys wearing giant power belts and wisdom head rings.

  Of course, the main reason is that as an unfavored demon king's son, Zhan En didn't have extra money to buy enough magical equipment to save face. Or rather, just the magic tool in his hand had almost bankrupted him, and from the mere thousand gold coins he had left when he arrived at the Dark Territory, it could be seen that Zhan En's days in the demon world weren't easy.

  As a dark elf, Verna was naturally not as particular as Jan and invested almost all of her rewards in purchasing magical equipment and weapons. After all, in the dark region, strength was the only way to protect oneself. It was also because of this that when Jan saw the dark elf wrapped in colorful magic lights, he finally had a intuitive understanding of the fourth function of "Evil Eye".

  However, Zhan En couldn't combine these functions for use, it's like a radar with different search modes, there are active radar, passive radar, infrared, electromagnetic waves and so on. You can only switch to a suitable mode to correctly search for what you want.

  To illustrate, if Jian enters a heavily guarded place, he can first activate the "God's Perspective" mode of the Evil Eye to get a general idea of the situation, then start the "Penetration" mode to understand the channels and building structure, followed by using the "Soul" mode to confirm how many enemies are in this building, and finally use the "Magic Exploration" mode to find hidden magic traps, equipment, and weapons, and judge their power from the strength of the magical aura they emit.

  However, as for the last function of 【Evil Eye】, Zhan En didn't have a single clue.

  In these two days, he has tried all the methods that can be tried, but he cannot find any clues about the fifth function of "Evil Eye". For this reason, Jianen has done many experiments and has become more familiar with the use and manipulation of "Evil Eye" in these experiments. However, there is still no clue about the fifth function. But Jianen believes that there must be something he hasn't noticed yet, after all, the task clearly stated five uses, so there must be five functions.

  Zhan En had once suspected that the fifth ability might be something like hypnosis, but after experimenting with Nabiki and Vilna, it seemed not to be the case. He also tried some other methods, unfortunately, none of them have been successful so far.

  In the end, Zhan En decided to borrow other people's wisdom.

  As he walked into the grand library, the first thing that caught his eye was the darkness and the tall bookshelves. They were filled with all sorts of books, neatly arranged by category, looking no different from any ordinary library. However, Jian Er was well aware that this grand library brought by the system was not ordinary. Not only did it collect knowledge from multiple worlds, but it would also change according to its owner's needs. As long as Jian Er wished for it, any book he picked up from any shelf would definitely be the one he needed most at that moment.

  After building the large library, Zhan occasionally came here to reminisce about the stories of his world. He could even "accidentally" flip through a few beautifully bound game magazines on the dusty bookshelves. It was as if Zhan now knew that the virtual reality technology that had been rumored to be in use on Earth had finally been put into use, and the world's first holographic simulation game, "Dragon Soul Continent", was about to be released. This made him occasionally sigh at the changing times, and if he hadn't crossed over, he would probably have been one of those who picked up a virtual headset to conquer the new world.

  However, after that, Zhan En rarely looked at these things again. The reason is simple, when you are in an environment without computers, TVs, and internet, but spend all day looking at magazines describing scientific and technological innovations, it's just a pathetic torture - even if you really get an Apple 9S here, it can't be charged, what's the point?

  It's better to look forward, rather than focusing on brand new games that you'll never get your hands on. Instead, think about how to have fun with the adventurers who are struggling in the dungeon.

  Zhan En casually picked up a book from the shelf and flipped through it, but soon threw it back. Then he picked up another one, "Pink Book Deluxe Limited Group Edition", glanced at it for two seconds, and put it back on the shelf. It's clear that even the great library doesn't know what Zhan En needs now, which is why this mess has appeared.

  But there will always be a way.

  Thinking of this, Zhan En walked slowly into the depths of the library, and soon he saw Elise's back.

  At this moment, Elise was sitting in a chair, intently reading a thick black leather-bound book in front of her. It had to be admitted that Elise's enthusiasm for learning magic was the reason why Jain could acquire new spells in such a short period of time. After all, within the system, only units who stayed in the grand library could begin researching. And Elise relied on her half-vampire physique being good, basically staying here reading books without eating or drinking for several days at a time, unless it was Jain or Enya coming to call her, otherwise she would just sit there reading, this diligent and selfless hero unit had moved Jain to tears.

  Compared to those idiots in the game who not only have to eat well, drink well, sleep well and be in a good mood just to come to the library to study for a few hours, Elise is already considered a hardworking role model!

  "Ah, Lord of the Castle!"

  Upon hearing the footsteps, Elise lifted her head and looked in Jain's direction. After seeing Jain, Elise's expression changed slightly, then she hastily put down the book in her hand and stood up respectfully. On the girl's pale face, a few shades of red also appeared immediately.

  "Excuse me, is there something I can help you with?"

  Eris' voice was as small as a mosquito's, which wasn't surprising considering she had been forcibly kissed by Jean in front of her father and even forced to take off her clothes before returning to the underground city. Fortunately, there were few people in the underground city now, so although Eris was nervous all the way, she managed not to be discovered. However, the stimulation Eris suffered from wasn't that easy to eliminate, so it was normal for her to blush and lower her head when she saw Jean now.

  "Still researching magic?"

  Zhan En glanced at the magic book on the table, and upon hearing Zhan En's inquiry, Elise also nodded almost imperceptibly.

  "Yes, Lord of the Castle, your library collection is indeed very rich and has been very helpful for my studies and research in magic..."

  "Is this book too?"

  Just then, Zhan En suddenly stretched out his hand and fished out a yellow-covered book the size of a palm from under that magic book. When Elise saw this book, her face changed greatly.

  "This... isn't... this..."

  "It seems there is indeed a need to study and research well."

  She glanced at the book with no name on the cover, Zhen Niu revealed a faint smile, staring at Elise in front of her. And Elise was now completely red-faced and couldn't say a word - just like a student who had been caught by the teacher secretly hiding comics.

  As he gazed at Elyse's shy expression, Zane was also moved in his heart. Then, he suddenly stretched out his hand and wrapped it around Elyse's slender waist. As for Zane's actions, Elyse was completely unguarded, only to see her let out a sharp cry, and the next moment she leaned into Zane's arms.

  After a moment, the two finally parted ways. Elsie's bright eyes were now completely shrouded in mist, leaving only her hands on Jain's chest as a small sign of resistance - but it was almost negligible.

  This is indeed interesting.

  Seeing Elise in front of him, Zane's mouth corners slightly curled up, revealing a hint of an eerie smile. Under his temptation, Elise had gradually become infatuated with it, and it was clear that the demonic imprint deep within her heart had taken root and sprouted. As long as he nurtured it well, he would be able to thoroughly control Elise's soul.

  But then again, what if I were to use 【Evil Eye】 now?

  As he thought of this, a golden flame suddenly burned in Zhan En's eyes, activating the [Evil Eye]. Then, his eyes widened in surprise.

  This is...

  Under the gaze of the "Evil Eye", a panel suddenly appeared beside Elise in front of him - it was not a character attribute information, but something that Jain had never seen before.

  Alicia (holding quality)

  The maiden (in front of you, still a delicate and pure little flower)

  Self-control (even in the face of tempting temptations, she can restrain her desires from within)

  Resistance (You are not enough for a girl's affection)

  Dedication (For a greater goal, she can sacrifice everything)

  She feels receptive (she doesn't resist pleasure from soul and body)

  Sensitive physique (even just a simple skin contact can make her easily fall into it and cannot extricate herself)

  Zhan En revealed a hint of a smile at this point.

  It seems that the last function of 【Evil Eye】, was still found by him.