Li Wei sensed some movement from the Book of All Laws.
He did not directly summon the Book of All Laws. Although, after the battle ended, everyone present before, whether workers or thugs of the Skeleton Gang, had all fled, one could never be sure if someone was hiding somewhere, watching the scene.
Moreover, although the police precinct in the lower district was virtually non-existent, it was only "virtually" non-existent, not genuinely non-existent. If he wasted too much time here, and the police arrived, things would become exceedingly troublesome.
He retrieved the vampire's heart that he had just thrown away.
This time, still shaken, before figuring out the exact situation, he did not intend to touch this heart directly with his own body again.
He took off his jacket, wrapped the heart in it, and then picked it up carefully.
Well, no accidents occurred this time.
...
Leaving the crime scene, Li Wei did not immediately go to submit the entrustment, but returned to his own residence.
He first dealt with the wounds on his body. The sense of weakness was still there, but it was better than before.
After confirming that the injuries would not have a serious impact on him and that he could return to normal after a few days of rest, he couldn't wait to study the vampire's heart.
He first summoned the Book of All Laws, skipping over the Sharingan, disguise technique, and steel slicing flash, arriving at the fourth page.
What he saw was that the fourth page, which should have originally been blank, faintly displayed some peculiar patterns.
These patterns were too light, too faint, and too blurry, also being incomplete, and seemed to be veiled by a mysterious power that made them impenetrable.
No one could discern what was written here.
However, for this state, Li Wei was very familiar - this was the process of the Book of All Laws showing new abilities. In the past, this process always passed quickly, in a few breaths' time, brand new text would appear on the blank page. But this time, it should be that the absorbed power was too weak, and it could not directly generate a page, leading to this situation.
Didn't this mean that by continuing to input vitality, new abilities could be demonstrated?
After pondering for a while, Li Wei didn't dare to directly infuse his own vitality - he didn't want to experience the feeling of being sucked dry again. When he first used the Book of All Laws and obtained the Sharingan, without the foundation of genetic liquid, he was fortunate not to be directly sucked into a person-dry and die.
Taking a deep breath, he picked up the vampire heart with his bare hands, while also maintaining the state of the Book of All Laws being summoned.
Slowly, he saw blood seeping out of the vampire heart, falling into his palm, and then being absorbed into the skin.
This time, he carefully and attentively felt the changes in his own body. He noticed that there was a force that, along with the blood, seeped into his palm, then flowed into his chest, and then inexplicably disappeared. At the same time, the content on the fourth page of the Book of All Laws was continuously expanding and becoming clearer.
This process lasted for about five minutes, and the vampire's heart in Li Wei's hand had become completely withered. The originally cold touch completely disappeared, replaced by a feeling as if he was pinching a clump of clay lacking in moisture.
With a slight effort, the whole heart was crushed into pieces in his hand.
Obviously, the vampire heart, which was highly valued and could be used as a main material for manufacturing Class C genetic fluid, had completely lost its value.
In its place was a full page of strange characters that appeared on the fourth page of the Book of All Laws.
This surprised Li Wei - could a vampire's heart actually unlock the pages of the book?
With a shift in perspective, he quickly thought of a possibility.
The Book of All Laws essentially draws upon life force to unlock the pages. Moreover, this life force must be provided by Li Wei himself.
However, the distinction between him providing the life force and it being absolutely necessary lies in its essence.
The usage of genetic fluid is akin to the power of the fluid being injected into the Book of All Laws before it's absorbed by his body. In this process, his body acts like a transshipment station, with his inherent life force not being absorbed much by the book.
The vampire's heart is the core of the vampire's flesh and blood, and the main raw material for genetic fluid, fundamentally containing a large amount of life force. In Li Wei's hands, this core seems to be able to be utilized by the Book of All Laws directly, just like genetic fluid.
The life force contained in this core is comparable to that of genetic fluid of the same grade, even slightly better.
After all, no matter how excellent the manufacturing process is, some life force will inevitably be lost during the processing. If we also consider the effects of adding some auxiliary materials in addition to the main ingredients in the gene liquid, the two can barely balance out.
But in any case, the life force contained in a fresh core of flesh and blood must be more.
Ordinary people must rely on gene liquid, as ordinary people do not have the ability to directly absorb the core of monsters. Of course, neither does Levi.
But the Book of All Laws can. It seems that using the vitality of a monster's flesh and blood core to infuse into the Book of All Laws seems to be more cost-effective for him.
Unprocessed cores of the same level are much cheaper than gene liquids of the same level.
However, the Gene Liquid is still indispensable for Li Wei. It doesn't matter whether it's using the Flesh and Blood Core or the Gene Liquid to upgrade the Book of Ten Thousand Laws, but if it's about strengthening the flesh and developing human potential, he can only use the Gene Liquid. His body can't directly absorb the power of the Flesh and Blood Core like the Book of Ten Thousand Laws.
No matter what, this is a great piece of good news. This means that Li Wei's way of improving his strength has become more extensive!
Encouraged by the mood, Li Wei once again focused his attention on the Book of Ten Thousand Laws that had just absorbed the vitality.
Having filled the fourth page with script characters, in Li Wei's eyes, the Book of Ten Thousand Laws now represents three options.
The first is to upgrade the Sharingan; the second is to upgrade the disguise skill; the third is to acquire a new ability called the Demon Left Hand.
The second option was decisively eliminated. As an auxiliary ability, the disguise skill has its unique value, but it can't directly enhance one's strength after all. There's also not much opportunity to apply its effect, so it's not suitable to spend precious ability enhancement on it.
Thus, a choice must be made between the Sharingan and the Devil's Left Hand.
Sharingan is undoubtedly an extremely powerful ability. In the original anime and manga, it is considered game-breaking.
However, only the Sharingan that has reached the Mangekyou sharingan level can truly be considered game-breaking. Before reaching Mangekyou, Sharingan undoubtedly has powerful visual detection abilities, as well as some illusions and resistance to illusions. But in general, its overall benefits have not exceeded the normal too much.
As for the new ability of the Devil's Left Hand, it makes Rui Li a little excited.
This is a capability that can permanently demonize his left hand. Devil's Left Hand will significantly enhance Rui Li's strength and display multiple special abilities that belong to the devil's hand.
After glancing at the reference images in the Book of Ten Thousand Laws, Li Wei recognized that the Devil's Hand originated from the game "Devil May Cry 4". It belongs to the power of Nero, one of the dual protagonists in "Devil May Cry 4". However, the original game should have been the right hand, and it's unclear why it was changed to the left hand in the Book of Ten Thousand Laws.
But it didn't affect his interest.
After pondering for a moment, he decided to choose the Devil's Hand.
In Li Wei's view, the new abilities that appeared after the upgrade of the Book of Ten Thousand Laws are somewhat like lottery draws. Fortunately, he is not an unlucky person, so he doesn't have too much bad luck. But judging by the two mediocre abilities that appeared when he unsealed the pages for the second time, he is definitely not an extremely lucky person either.
Under these circumstances, if a powerful ability appears when unsealing the fourth page, it's better to obtain it first.
As for the upgrade of the Sharingan, there will always be opportunities in the future.
After making the choice, he quickly felt the changes within his body.
A slight tingling sensation manifested in his left arm. He saw a blue glow surging beneath the skin from his elbow to his fingers.
Soon, the tingling sensation transformed into a burning feeling, then into an agonizing pain as if scalded by boiling water.
Up to this point, Levi could still endure it, but when the scorching feeling intensified further, resembling his forearm, palm, and fingers being grilled directly on the open flame, it became unbearable for him to continue.
Cold sweat the size of soybeans appeared on his forehead, his neck veins bulging, his face flushed red, and clenching his teeth tightly, he tried desperately to withstand the pain.
However, this was not the end. The pain in his left hand continued to intensify, and it didn't stop until he could no longer withstand it!
Li Wei held his left hand tightly, screaming in pain! He felt like he might faint from the agony, but his consciousness seemed to be clearer than ever.
It wasn't until he felt he would not be able to bear the pain and might die directly that the feeling of torment gradually subsided.
He lay weakly on the ground and stayed there for a whole hour before regaining some strength.
He raised his left arm, which had now completely transformed into a different appearance.