The so-called essence blood is not ordinary blood, it is the essence of blood, and there are only a dozen drops of essence blood in the body of ordinary people.

According to the method that Kus said, Luo Lin forced a drop of essence blood to the tip of his finger, and then the fingertip slashed, and suddenly, a drop of blood that was extremely red fell into the middle of the six-pointed star, and the blood dripped out, Luo Lin's face suddenly turned white, obviously the flow of blood essence was a lot of damage to the body.

"Hum—"

The six-pointed star array immediately lit up with a strange red, and at the same time, black light quickly circulated in the magic array, and extremely mysterious magic symbols jumped in the magic array as if they were alive.

Rollin stood up, wiped the sweat from his forehead due to weakness, and looked curiously at the magic array he had single-handedly constructed.

Kus looked at the star array without blinking, and after a while, he couldn't help but sigh, "This undead space is really not so easy to condense!"

Before his words fell, the strange blood red color dimmed, and all the magic symbols retreated into the formation again, and in an instant, the six-pointed star array flew back to Luo Lin's dantian in a circle.

"Uncle Kus, this is ......," Rollin asked in surprise.

"Boy, don't be disappointed, although this last step of the blood sacrifice is the simplest, but this step is also the most variable! This method of condensing the undead space is also obtained from an ancient book, which says that this blood sacrifice method is extremely weird, and the success or failure is almost entirely dependent on luck, some people can condense the undead space with a drop of essence blood, and some people may not be able to condense it successfully even if they drop thousands of drops!"

Luo Lin couldn't help but be dumbfounded, he didn't think that this last step would have to be tested to 'hit the luck' to succeed, "Uncle Kus, how many drops of success did you drop in the first place?"

"Well, it seems that it took more than a hundred and fifty drops to succeed!" Kus's eyes showed a hint of remembrance, as if he had returned to his youth, and in order to condense into this undead space, he dripped essence blood into the six-pointed star array again and again.

Suddenly, Rollin felt a little dizzy in his head, a little panicked in his heart, and sat down on the ground.

"Hehe, you kid, from today onwards, you eat more meat, don't go to the college cafeteria to eat those light vegetarian dishes, this can give you more blood, and at the same time, use up to two drops of essence blood a day, don't be greedy." Kus laughed and said that no one had told him this back then, and that he had only wanted to make a successful dripping of blood, and finally passed out due to excessive blood loss.

On that day, Rollin did not go to the canteen as instructed by Couss, but caught a few wild games with the donkey Xiaohei to eat, however, Rollin's 'nightmare' also began at that moment.

In the first few days, Rollin didn't have any burden to eat barbecue, but after eating it for a week, Rollin couldn't bear it, what a delicious thing, if you keep eating, you won't get tired of a few meals, besides, every time Rollin is at the request of Kus, he must eat at least a pound of meat before he is willing to give up, and later, Rollin sees the barbecue and his scalp is numb, and he dodges back, but under the 'pressure' of Kus, he has to pinch his nose and eat.

Xiao Hei does not refuse to eat meat every day, and even is extremely puzzled by Luo Lin's grinning and stuffing barbecue meat into his mouth, he thinks that the best thing in the world is barbecue, and how does his own master eat this barbecue as if he has suffered a great sin.

With an abundant supply of meat, Luo Lin would drip essence blood into the magic array twice a day, but the undead space was not generated for a long time.

At the beginning, Luo Lin had a hope every day, and when he dripped, he still had expectations in his heart, maybe if he dropped this drop, he would succeed, but after more than a month, Luo Lin was also numb, and this blood work became a routine every day.

"This seems to be the eightieth drop. "How much, Luo Lin didn't bother to remember, he squeezed out a drop of essence blood from the tip of his finger as usual, and then didn't look at the formation, sat on the ground, adjusted his state, and prepared to cultivate thunder and lightning magic power.

"Hum-" The magic array, as usual, will light up with blood-red light after dripping into the essence blood, and it used to stop automatically after about ten seconds, but today it has continued for more than thirty seconds and has not stopped.

Rollin was not aware of this.

"Buzzing ......" was different from the past, the blood-colored light not only did not decrease, but became brighter and brighter, and during this time, the mysterious magic symbols also flowed wildly.

The middle of the six-pointed star array began to concave down, and the six corners around it quickly moved closer together, and at one point, the six corners touched together, forming an irregular ball shape, and then it began to contract.

"Boom—"

A little golden light suddenly came out of the black, and at this time, Luo Lin, who was refining the magic power of the thunder and lightning system, was suddenly awakened by this sound, and saw that the gold in the dark mana package was getting more and more abundant.

"Cheng, it worked!" Kus also flew out of the white stone, looking at the golden and muttering.

The golden light gradually faded, and in mid-air, a dark golden skull the size of a fingernail was quietly suspended there, and at the same time, Luo Lin felt that a space of ten cubic meters was closely connected with him, and it felt like his own arms, legs and feet.

"This, is this the undead space?" Luo Lin's fingers gently pinched the dark golden skull, and a trace of blood connection came from it, Luo Lin's heart moved, and the skull entered the middle dantian.

The donkey Xiao Hei lay leisurely on a piece of bluestone, squinting and napping with big eyes.

Suddenly, it felt empty under it, and slammed it to the ground, and the donkey quickly stood up, but found that the big bluestone under him was gone!

When it was in doubt, it only heard a boom, next to it, a big bluestone came out of thin air and fell heavily on the ground, the donkey tentatively took two steps forward, came to the bluestone, but found that this bluestone was the one under him just now, it didn't understand how this guy suddenly disappeared and how it suddenly appeared.

"Hmm" the bluestone disappeared again under its nose.

Immediately, "boom!" and "boom!" and "boom!" ...... The bluestone kept appearing and disappearing, so frightened that Xiao Hei's two big ears stood up.

"This kid, it's really ......" Kus laughed and watched as Luo Lin used the undead space, kept collecting this big bluestone and then releasing it, having a lot of fun, how similar it was to the situation when he had just condensed the undead space.

"How's it going, little black, isn't it fun!" Rollin Soul said.

“...... Xiao Luo, you got this stone, you, how did you do it!" The donkey came to Rollin's side, circled around him a few times, and stared at him carefully with big eyes, but found nothing suspicious.

"It turns out that there is also a limit to the weight of things in this undead space. Luo Lin said secretly, it turned out that he just wanted to put away a stone several times larger than this bluestone, although the space could be accommodated, but it could not be collected, and he could only collect things about a foot around him.

"This space can't collect living things!" Luo Lin tried it a few times on Xiao Hei, but he couldn't put it into the space.

"My undead space is about ten cubic meters, which is several times larger than the space ring of Boss Mahler, and he needs hundreds of thousands of gold coins, and I am a ......" Luo Lin secretly thought in his heart, and inadvertently, saliva flowed from the corner of his mouth.

Kus looked at Rollin's appearance and couldn't help but smile helplessly, "Have you had enough of this kid!"

"Uh...... Almost, Uncle Kuss, what's the matter with you?" Rollin said solemnly, wiping the saliva from the corner of his mouth.

"Hey, you kid is lucky, the eighty-eighth drop of essence blood has condensed into the undead space, from now on, you can be regarded as a necromancer, well, from tomorrow, Lord Ben will start teaching you necromancer, let's repair it today, you are really tired during this time, it's time to relax." ”

"You don't have to eat that damn barbecue from today onwards!" Luo Lin cheered and ran towards the academy cafeteria, for the past month and a half, he had dreamed of eating the vegetables in the cafeteria, but because he had to replenish enough blood to blood the magic array, he had not been able to achieve it, and today he could finally get his wish.

After eating a vegetarian meal, Luo Lin finally took Xiao Hei and walked in the direction of the library with satisfaction.

This is what he thought about when he was eating, he has been to the Potter Academy for more than half a year, he has not been to the academy's library, I heard from several other people in the dormitory that this library has a lot of books, and there are many kinds of books, and there are often many beautiful female magicians reading in the library, and the third Bill is also because of this, he often wanders around the library.

The library was about two or three miles away from the cafeteria, and Luo Lin cast a thunderbolt speed auxiliary magic on himself, and it only took three or four minutes to arrive, of course, he asked Xiao Hei to go back to the beast shed in the dormitory.

The library of the college is built on a small dirt hill, covering an area of thousands of square meters, Luo Lin walked into the library along the exquisite white jade steps, the library is divided into several areas, each area has a class of books, Luo Lin first carefully looked at the sign next to the door, and understood what types of books are available in each area.

Then he walked towards the 'Magic Element' book area, because he wanted to find out if there were any books about the two major energies other than the seven elements, and the inky black in his dantian According to Kus, it was very likely that it was a type of time energy or space energy, but he didn't know which one it was and how to cultivate, so he came today to verify it.

There are really a lot of students in the library, one by one or standing in front of the bookshelves, or finding an empty seat to look at the books seriously, the library is very quiet, and occasionally a few voices are also very low.

"Isn't this the third Bill!" Luo Lin was stunned to find that the handsome and handsome Bill was sitting at a table in front of him, and there was a beautiful girl with long black hair sitting opposite him.

At this moment, Bill also spotted Rollin, and was surprised and just wanted to come over to say hello, only to see Rollin make a 'you continue' gesture to him, and then walked away with a smile.

After a while, Rollin came to the area of magical element books, where there were more than a dozen tall bookshelves, and he began to search for books about the two major energies one by one.

As soon as Luo Lin turned around a bookshelf, he found a middle-aged man in a black robe standing here, holding a book and reading it carefully.

"Mr. Harvey!" Rollin called out softly.

The middle-aged man looked up and saw that it was Luo Lin, a student he used to be most optimistic about cultivating necromancy, but now he only came to his dark department class for two or three classes a month, and his eyes couldn't help but be filled with complicated looks!