Returning to the ruins of the towering tower, Zhang Cheng was not in a hurry to start the last step of the plan and completely destroy the city shrouded in death and resentment. Instead, he took out his notes and began to sort out and summarize the problems encountered in the experiment and how he solved them. By the way, he made a comparison with the knowledge learned in books.

After two consecutive world experiences, he has clearly realized that he can\'t simply and rudely use a set of magic system to deal with all crises.

Whenever entering a new world, the power obtained from the previous world will be greatly weakened, limited, or even completely incompatible. The only thing that can be retained is the knowledge and materials that can be used for reference.

If he wants to go further in this dangerous game, he must find out the common points of different magic systems, and then slowly build a magic system that can be applied to all worlds.

Of course, innovation is never easy.

In fact, no matter what happens, innovation can never be achieved overnight. So far, Zhang Cheng has no clue, so he has to start with the most elementary experience.

With the passage of time, the original blank notepad is densely filled with a large number of letters that people on earth can\'t understand, as well as various unique symbols, complex patterns and so on.

In order to prevent this note from being accidentally seen by outsiders, Zhang Cheng deliberately uses several languages, including human common language and high elf language in Azeroth world, Westeros common language in the song of ice and fire world, a small amount of source language obtained from the son of the forest, valerian language translated from the stone, etc.

In short, it is basically wishful thinking for others except myself to want to read the content inside. Even with the help of some mysterious spells, it will take quite a long time to decipher it, so as to ensure that the secret will not be leaked to the greatest extent.

Just when he was absorbed in the incomparable complexity and great destructive power of death and psychic magic, he suddenly felt a strong wind coming towards his face. He looked up and saw that xiuma came back on the dragon.

The newborn death knight was full of fear and despair, jumped directly from the dragon\'s back, and carried a Valeria steel sword in his right hand.

However, this valerian steel sword has been infiltrated by magic plague and death energy in the killing. The sword body shows a large number of black spots, as if it has been soiled by something. Once a living person is hit by it, the consequences will not be as simple as skin trauma, but also accompanied by terrible diseases and curses.

Looking at the black and red ripples around the surface of the long sword, Zhang Cheng suddenly remembered that after ED, Duke of the north, was executed, Stark\'s family sword "cold ice" seemed to have been obtained by old tywin, melted it and recast two new swords.

One of the shorter ones is called "widow\'s howl", which was given to the short-lived Geoffrey as a wedding gift, and the other one is given to James. According to the original plot, James should name the sword "oath keeping sword" and give it to Britney.

Obviously, according to the length and width, the death knight should be carrying the latter at the moment.

It seems that with the flutter of butterfly wings, James Lannister didn\'t send out the "oath keeping sword", but chose to leave it to himself.

Unfortunately, a sharp sword did not help him escape from the terrible war and magic plague. Since the sword fell into xiuma\'s hands, his fate is self-evident.

Recalling their previous unpleasant contacts, Zhang Cheng couldn\'t help sighing slightly, closed his thick notes and asked in a low voice, "have you handled it all?"

"Yes, master, it\'s all cleaned up." the death knight knelt down on one knee and replied in the affirmative.

"Very good! Now take your mount and go to occupy this island for me, turn it into a country of death with killing and pollution, and kill anyone who tries to get close, okay?" Zhang Cheng took out a simple chart from his pocket and handed it to me.

"Understand!" xiuma opened her eyes and nodded without hesitation.

Without any hesitation, he put away the chart and rode directly into the sky on the dragon of death, flying towards the ruins of varelia. He was completely unaware of what this move meant.

Watching the huge death dragon become a dot in the sky, Zhang Cheng finally showed a sneer on his face and muttered in a voice that only he could hear: "Dear cronada, since you are so eager to be free and break the seal that imprisons you, I will add an insurance to the seal. See how long it will take you to succeed alone without external help."

There is no doubt that the island he let the death knight occupy is nowhere else. It is the island where the varelians imprison the dragon, and it is also the only entrance to the basement.

The purpose of doing so is to retaliate on the one hand and prevent cronada from doing similar things again on the other hand.

After all, with its sensitivity to magical energy, once the death knight begins to corrupt the land, it can quickly detect it. Moreover, when it finds out that the person who did this is the servant sent out at the beginning, the expression on his face will be very wonderful.

At the thought of Lao Long\'s furious appearance at that time, Zhang Cheng showed a malicious smile on his face. Then he carefully took out a sealed metal box from his arms, took out a stone with red light from it, and said softly, "dust to dust to earth, it\'s time to draw a full stop..."

The voice just fell!

He threw the stone the size of the baby\'s fist into the air, raised his hands and loudly sang the ancient valerian language!

With strange syllables, the already very bright stones burst out a strong light comparable to the sun, both like a burning flame and a huge light mass.

When the light rose slowly and expanded to the limit, a deafening voice suddenly echoed over the old town.

Boom!!!!!

The loud noise like thunder made the ground tremble!

Next second

The huge mass of light began to fall to the ground like a meteor, and the terrible power was chilling.

As a caster, Zhang Cheng is undoubtedly very aware of the destructive power of this thing, so he doesn\'t hesitate to jump on Kulo kelba\'s back and fly to the sea.

Before it could fly far, a light that could not be described in words ran through the sky and the earth. Whether it was the dark clouds over the city or the broken buildings and bodies on the ground, they all turned into dust in front of the light.

The terrible energy storm takes the falling place as the center, tearing everything within a radius of more than 2000 meters into tiny particles like fine sand!

Zhang Cheng, who was almost overturned in mid air, managed to control his mount and stabilize his body. He narrowed his eyes and looked at the port. As a result, he found that a large pit with a depth of more than 150 meters had been formed near the landing site, and the scope covered all the old town. At present, there is no intact building in the city wall