Mentor Allison's promotion to the Undead took a long time, from mid-March to late July, and she was always hunting high-level undead and accumulating soul fire energy for her companions!

In the past four months, Mentor Allison has consumed at least more than 40,000 pieces of third-level magic on Su Ze and the others, which can be called an astronomical amount, not counting the magic formulas and magic materials that her servants have to use for some injuries!

If he failed to advance this time, Mentor Alison didn't know that he would have to re-accumulate for hundreds of years before he had a chance to hit the seventh-level realm again! But the good news was that Su Ze heard that Mentor Alison was not very old, no more than 500 years old, which was quite young!

And from this mission, Su Ze has harvested more than a dozen third-level magic formulas and more than 600 third-level magic stones, which can be called an overnight rich. After purchasing the potion, there are not many Magic Stones left, only about 350 left!

In the space of four months, the upper limit of his spiritual power has skyrocketed, reaching the level of 223 points, and he is already about to step into the realm of a second-level magician! This is the effect of his simultaneous non-stop use of potions and the crazy use of spiritual power every day! And the other seven people have also improved a lot, which Su Ze did not expect at all before accepting this task, if this task continues, will it be possible to reach 400 points in another two or three years? Su Ze thought with joy.

However, under the generous task reward, it is an increasingly demanding time requirement for everyone, from the beginning of the extension of one hour a day, to now every day in addition to classes, basically a day to be on call in the mage tower.

............

"Wanda, you three wait!"

In the dark classroom, Instructor Catherine stopped the three Colin who were about to go to the Mage's Tower.

When Su Ze heard this, he smiled at Janet: "Little Jane, then you go first!"

But before Jane could nod her head, Tutor Catherine said, "No need, Janet can also sit in on it, she may already know what I want to tell you!"

Hearing this, Janet asked uncertainly, "Tutor Catherine, are you talking about the Esmie Rhinoceros Calculation?"

Catherine nodded and said, "It seems that Lord Acheson has already taught it to you!" Then she said to Su Ze and the others, "What I want to tell you is to let you learn the Esmi Lingxi Calculation!"

"Doesn't the student have to become a third-level magician before they can learn?" asked Janet, puzzled, and her mental power had reached 300 points a week ago, and becoming a third-level magician was just around the corner.

"Hehe, didn't you study when you were in the second level?" Catherine said with a playful smile, "As for the three of them, they belong to special circumstances, so they need to be studied in advance!"

When Su Ze and the others heard this, they instantly thought of Mentor Allison's task, and the "special circumstances" that Tutor Catherine said could only refer to it!

"By the way, there is a fee for learning this course, 100 third-level magic stones per person, and you can go to the finance office to pay the fee!"

Uh! The faces of the three people who were originally in high spirits suddenly fell, this is cutting meat from them! But there is no way, people have to bow their heads under the eaves!

But it's nice to be able to turn Philosopher's Stone into knowledge!

Then Janet accompanied the three of them to the department finance office to pay the fee and received the warrant. Only then did I enter the library on the fourth floor of the Mage Tower!

Different from entering the residence of Mentor Allison, Su Ze and the four of them went directly up the stairs to the fourth floor under the guidance of Janet, and what appeared inside it was only a space the size of a normal living room, which was very different from the huge tower body outside, which looked extremely mysterious!

Unlike Janet, Su Ze and the three of them came to the library inside the Mage Tower for the first time, so they were a little cautious, for fear of touching some prohibition.

From the outside, the library is a quaint room, the "library" written in Navian on the lintel has disappeared in some places, and the door made of fir wood is full of cracks and dilapidated appearance!

Colin knocked politely on the door, and with a "squeak", the door slowly opened. What appeared from behind the door was an old man, Su Ze sensed from the fluctuation of his mental power that he was at the level of a second-level magician, but he was old and had no vitality, and there was no chance of promotion!

Maybe that's why he came to guard the library!

Although the old man was old, his beard and hair were gray-black, and he was wearing a dark mage robe. He looked at everyone for a moment, and suddenly smiled: "Hehe! Old Cole is old, and the door is a little slow, please don't mind!" After speaking, he suddenly felt annoyed and had to hold his forehead, "Damn, I forgot to invite you in!"

After saying that, he asked everyone to come in......

Seeing that the old man was just an old second-level magician, Colin lost his restraint and walked straight in with Wanda! Su Ze and Janet thanked him softly and quickly followed the two Colin in front!

As soon as they entered the door, Su Ze and the others stood there stunned, shocked again.

At this time, they were located on a high platform, and when they looked down from the high platform, they saw a circular square with no edge in sight, and countless bookshelves were neatly arranged on the square. The busy figures inside are elves that only exist in the magic books and have been extinct in the Middle Ages!

The difference between inside and outside the door is so huge, the surprise in everyone's hearts can be imagined! Even Janet was silent at the moment, looking at the library square attentively!

"Hehe, I'm shocked. When I first came here, I was no less shocked than you!" Old Man Cole said with a smile from behind, "It's just that after so many years here, I feel bored! It seems that it's time to take a vacation and go out for a walk!"

Su Ze and the others couldn't understand the old man's mood, they didn't know how many years it would take to smooth out the shock in their hearts, ten years, one hundred years, two hundred years, or five hundred years?

"By the way, take out your warrants, so that I can tell those little ones to find you something!" said the old man, finally remembering what he was doing.

The three of Colin handed the warrant to Old Cole as he said, and the old man didn't look at it, walked to a counter next to the high platform, and reached out to pull the bell.

"Jingle bell!"

A stunningly beautiful elf heard the news and took the warrant! In less than a quarter of an hour, she staggered and flew over with a large pile of books! People couldn't help but worry about whether she would be crushed by the books, even Su Ze had an urge to pity the fragrance and cherish the jade! (uh, why do you want to use Su Ze as an example?) Janet snorted coldly in her heart when she saw this!

"Slow down, slow down!" Cole said to Janice with a smile. With a wave of his hand, the eye-catching elf left, and he took out three crystal balls from under the counter and began to cast the "photocopying spell"

This is a simple spell for a magician to use a crystal ball to copy a book, which is not expensive and easy to learn!

The old man Cole finished copying, handed the crystal ball to Su Ze and the four of them, and then waved his hand to let the reluctant four leave......

"I didn't expect such a big difference between the inside and outside of the library, it's really, it's really ......" Outside the mage tower, the three people waiting for Eric to talk, Colin was speechless for a while, and he didn't know how to describe it!

"It's really Sumeru mustard seeds, immortal means!" Su Ze was speechless, but said silently in his heart.

"By the way, let's take a look at what this so-called 'Esmi Lingxi Calculation Method' is!" Wanda broke the silence and picked up the crystal ball and injected spiritual power to check!

When Su Ze and the others heard this, they also started to check.

............

After temporarily ending his mission with Mentor Allison, Su Ze began to take out the Philosopher's Stone to restore his mental power.

Late at night, he carefully perceived something, and found that the upper limit of his mental power had increased by 2 points, and he couldn't help but nod with satisfaction. Then take out the magic crystal containing the "Esmi Lingrhino Calculation Method" and probe into the spiritual power to continue reading!

Hours passed before he regained his mental power and carefully comprehended the contents!

The so-called calculation method is a combat method that only comes into contact with after the third-level magician, and it is explained in the words of the book. It is to increase the information calculation power of the magician's mental power per second, which converts the combat method of the magician casting magic spells into the information collection during the battle and the optimal solution to deal with the enemy's spell after calculating the mental power!

This is a rather novel statement, if Su Ze had been a monk in his previous life, he would definitely be able to recognize that this way of fighting was essentially the same as the Heavenly Machine algorithm of "anticipating the enemy's first opportunity".

The fundamental operation of the two is supported by huge spiritual power and divine consciousness!

However, the greatest useful function of the Spirit Rhino Calculation Method is not to fight! You must know that magicians, especially high-level magicians, only spend a small part of their long lives in battle! Most of the time, they are cultivating their spiritual power and doing research!

And magic research is actually quite dangerous, if magicians can use their mental power to calculate first, and avoid some unnecessary risks, their personal safety factor will be much higher!

"I see, it seems that the war has reached the late stage, is Mentor Alison afraid that our second-level ones will drag their feet and affect the speed of repair?"

Su Ze touched his chin, thinking about the task situation in the past month, and at the same time secretly said in his heart.

After entering the middle of July, even if Su Ze, Colin, and Wanda repaired it, they were already lord-level undead. And once the undead have crossed level 10, they will become lords. Their bones will be nourished and evolved by the energy that overflows during the advancement, and become extremely hard!

Therefore, when repairing them, the mental power and time required to use the Dry Bone Resurrection Technique have also increased greatly, and the speed has slowed down, which is also something that cannot be helped!

However, if he learned this calculation, Su Ze believed that the situation would be much better......