After learning about what happened on Iron Cross Avenue, Levi didn't pay much attention to it and laughed it off.

However, he didn't ask for any money, and even returned it all with the equipment sold and Zhu Mingyu's thank you gifts, and let Zhu Mingyu take the money and continue to buy the flesh and blood core for him.

This time, Zhu Mingyu's enthusiasm for Li Wei's work was obviously high. A week later, the entire 100,000 flesh and blood cores were all completed.

According to Zhu Mingyu, this time he opened a trade route on the side of the Iron Cross Avenue, and there happened to be a chamber of commerce over there, and he hoarded a batch of high-end flesh and blood cores in his hands, which was a little premium, but he still did it.

The efficiency is very fast, and the little money that goes out at a premium, Levi doesn't care much about it.

In his hand now, he connected the batch of flesh and blood cores he got from the worm hive that time, as well as this batch of newly bought ones, which added up to the value of 160,000 amethyst.

After thinking about it, I opened the thirtieth page of the Book of Ten Thousand Laws, and if I used the flesh and blood core, it should be around the value of 140,000 amethyst.

Without any hesitation, Li Wei digested all the flesh and blood cores of the 140,000 amethyst in one go.

On the thirtieth page, fully opened, four options appear.

"Thor Force Field Upgrade."

"Demon Left Hand Upgrade."

"Blood Cicada Knife: At the expense of flesh and blood, attach great power to the weapon."

"Medusa Ray: Shoots a violet ray, and if it hits the target, it will be poisoned and possibly petrified."

Luckily, at the opening of the thirtieth page, there was an upgrade option for the demon's left hand!

There was no need to think about anything else, and when there was an upgrade option for the Demon Left Hand, one of his two main combat power systems, there was no need to think about anything else.

After decisively choosing the demon's left hand, and filling the thirtieth page with the strange runes on the Book of Ten Thousand Laws, Levi felt a new power rising from his left hand.

Another large increase in the basic strength attributes, and the power increase of the original skills attached to the demon's left hand, these are the most basic increases brought about by the system upgrade. These, don't need to mention it for the time being, Levi felt it a little, and probably confirmed the increase in his heart.

The upgrade of the demon's left hand, what Levi values most is the new ability that has grown.

Its name is called, 'God Destroying Chop'.

"God Destroying Slash: Use weapons to guide thunder and lightning to slash out a thunder sword light, which has the power of God Destroyer."

The name was domineering, and Levi's mood became excited.

According to the information about the 'God Destroying Slash' that had been put into his mind, he knew that this was a direct attack method based on the thunder attribute.

After the demon's left hand obtained the important trait of 'Demon Punishment Thunder', from the Thunder Demon Punishment Hand at the beginning to the 'Destroying Thunder' later, the thunder and lightning attribute moves along the way were very powerful.

But lately, he's feeling a little weaker.

'Destroying the Thunder' is used to fight the opponent of the element level, and the power is not enough. Not counting the kaleidoscope pupil technique, when he was dealing with high-level opponents who needed all his strength to deal with, he turned on the demon form, and the 'wind, fire, frost, and thunder demon dragon' that he used to play with traditional combination skills was instead the main combat method.

The Wind Slash makes up for this to a certain extent, but this move is not too easy to use to hit the elements, although this move is close to the level of the elemental skill, but there are pre-requirements for activation.

The new 'God Destroying Slash', as a powerful means of direct attack, is a medium and long-range split, which is much more direct.

All in all, the upgrade of the demon's left hand represents the completion of one of Levi's two main combat systems, and it must be of great help to his combat power.

After spending 140,000 amethyst flesh cores and opening a page of the Book of Ten Thousand Laws, the remaining flesh and blood cores he has now in hand are still about 20,000 amethysts.

These things are enough for him to refine for the next two or three months.

With patience, Li Wei began his normal cultivation. Most of the time, I spent my time in the practice room at home, practicing the 'Heavenly Venerable Divine Will'. Occasionally, I run to the training ground on the side of Merlin Avenue and practice my tricks.

And now, he has an important breakthrough that will soon be achieved.

That is the combined study of the wind wall of the wind sword technique and the armor of his own mage.

He had this idea for a long time. But in the past, due to the slight lack of attainments in the sword art of resisting the wind, he has not been able to research anything particularly good.

But now, he has improved his level in the Wind Resisting Sword Technique, and he has also mastered the Wind Breath Slash. These improvements have made him more confident in studying the combination of wind walls and mage armor.

The research was not all smooth sailing, but slowly some results were achieved.

It's been three months since he's mastered the Tempest Breath Slash now. Now, he is finally able to use these two tricks to make a preliminary combination of results.

Standing in the middle of the uninhabited training ground, Levi closed his eyes, his mind urging the power of the wind.

The formless mage armor that shrouded him all the time revealed its form. A swift wind, with a touch of cyan, smeared the transparent mage's armor.

And that's it.

'Wind Armor', this is the name given to the new skill that Levi has researched for himself. The Wind Armor lasts for about ten minutes, and on top of the Mage Armor, the Wind Armor can greatly improve Levi's defense against physical attacks.

He also specially found Erin to help him test it.

Under the protection of the 'Wind Armor', Levi stood still, and without any means, Erin could no longer break through his mage armor with a single shot without using his elemental skills. She had to fire two shots with all her might to break through the Wind Armor, but she couldn't do much damage to Levi behind the armor.

That's pretty powerful, and the defense capability has risen a lot.

At the beginning, he had also gone to learn from Erin, and he had personally experienced the power of Erin's gunfire, and he remembered it quite vividly. Bright red roses and pure white roses, these two roses, in the competition, brought him great trouble.

And Irene, who hit a red rose with her own hands, didn't be able to do anything to Levi this time. The red rose bloomed onto the Tempest armor, and the cyan Tempest power was greatly shattered, but it did not disappear.

Another white rose bloomed on Levi's armor to shatter the Wind's armor.

"Very good, in addition to elemental skills, it is rare to see a stronger defensive skill than your shield." Erin's evaluation is still quite high.