In the codex of Dong Xuzi's predecessors, there are a lot of research notes on demon beasts, which record the characteristics and habits of different demon beasts, appearance sketches, and even anatomical records, just like a rigorous scholar.

Therefore, Li Ling boldly guessed that the predecessor of Dong Xuzi should be a scientific researcher of the Celestial Empire before crossing over to the Tianyang Spirit Realm.

In his research, the predecessor of Dong Xuzi pointed out that when the demon beasts devoured enough spiritual power and successfully advanced to the second order, their physical functions would undergo earth-shaking changes, and the most obvious feature of them was the awakening of the "demon pattern".

"Demon pattern", as the name suggests, is those strange lines on the body of the demon beast, connected to the demon core, and draw spiritual power from it to release various demon spells with different effects during battle.

For example, the bloodthirsty demon pattern used to suck blood at the tip of the bloodthirsty spider spider's legs, and the rock armor demon pattern on the back of the gray rock wolf that controls the earth and rock. And because of the inferior bloodline, although the echinoderm pig was promoted to a second-order demon beast by relying on adventures, it did not awaken any demon patterns, and such a second-order demon beast was just a façade.

The demon pattern is the embodiment of the strength and potential of a demon beast.

If the first-order demon beast is only an existence that has been tempered by the aura of heaven and earth and is slightly stronger than ordinary beasts, then the second-order demon beast that has awakened the demon pattern is a ferocious creature that can truly apply spiritual power!

These patterns either enhance the beast's strength, agility and defensive strength, or give it the talent of poison, stealth and rage.

They are constantly fighting and devouring each other for territory, for food, and for survival......

Demon beasts, in thousands of years of natural selection, are constantly forced to fight, adapt to battle, and finally evolve into a tyrannical species born for battle!

This is also why, when most cultivators enter the Manggu Forest, they go together, and under the same realm, the demon beasts are completely crushing ordinary monks.

Looking at the gray rock wolf that smelled blood and gradually became violent, Li Ling frowned slightly, the scar on its back that was burned by the thunder in its palm was being repaired by the earthy yellow spiritual power, and the broken rock armor was also being reforged.

Just like the bloodthirsty spider who took a "sword slash at the red sky" and sewed up its body with a spider web, the second-order demon beasts seemed to have this cheating self-healing ability.

We can't delay any longer, let's do it quickly!

Li Ling put the spider-legged short spear in his hand into the storage bag, and then whispered: "Random equipment draw ......"

Fireflies-like points of light came out of thin air, obediently gathered in Li Ling's hands, and finally shaped into the shape of a long knife. The fluorescent light faded, revealing the original color of the long knife, which was as black as ink, without any superfluous decorations and patterns, and looked very ordinary.

However, at the moment when the black knife was in hand, Li Ling learned the name and origin of the knife......

The inscription of the knife [Cutting the Deer] is the treasure knife of Xiao Shiyi Lang in Gu Long's novel that cuts gold and jade.

Legend is that during the Spring and Autumn Period and the Warring States Period, Xu Luzi, a descendant of the famous sword-casting master Mrs. Xu, spent his whole life to cast, and its name means "Qin loses its deer, the world chases it, and only the winner gets the deer and cuts it." 」

The sharpness of this knife is unparalleled in the world!

"Random equipment extraction, it's really an infinite possibility......" Li Ling weighed the deer cutting knife in his hand, and said with a smile at Xuan in his mind, "I won't be surprised if I draw the Xuanyuan Sword next time." ”

"The upper limit of the strength of the equipment drawn by random equipment depends on the strength of the host," after listening to Li Ling's words, Xuan explained, "In other words, the stronger the host, the stronger the equipment you can extract, and those equipment that cannot be driven by the host's ability will not be extracted." ”

"How do you feel that you are beating around the bush and saying that I am weak ......" Li Ling wiped his face, quite embarrassed.

"This setting is actually a kind of protection for the host, because there is uncertainty in the function of random equipment extraction, and it is possible for the host to extract those equipment that are harmful to itself, such as the legendary magic sword or the cursed equipment. Once the host's strength is insufficient, when this type of equipment is extracted, it is very likely to die immediately. ”

"Understood. After hearing this, Li Ling nodded, clenched the deer cutting knife in his hand, and injected pure yang energy into it along the spiritual veins of his arm.

Different Weapons will behave differently after receiving Pure Yang Energy. So far, among the weapons used by Li Ling in battle, the Qingyu Sword has the highest compatibility with Pure Yang Jin.

Because the green light is a sword-shaped weapon, it can smoothly release the molten gold sword momentum and the Chixiao sword technique, and its own accompanying characteristics can also be activated by pure yang energy, that is, that layer of strange blue-gray sword light.

Because of its own limitations, Li Ling, as a human being, could not exert the sword skills attached to this demon knife, but he could use pure yang energy to liberate its true form.

At this moment, the deer cutting knife in Li Ling's hand has not changed in the slightest appearance after being injected with pure yang energy, but Li Ling can clearly feel the feedback of the deer cutting knife.

Not enough...... To unseal this knife, it takes more spiritual power!

So Li Ling increased the output of pure yang energy, completely letting go of the spiritual veins and veins of his right arm, and let all the spiritual power in the purple mansion pour into the deer cutting knife.

With a beep, the body of the deer cutting knife trembled slightly, and the qi veins burst through, and an invisible golden and iron aura spread out with Li Ling as the center, casting a layer of gray-black aura visible to the naked eye around him.

Others may not know what this is, but Li Ling knows it all too well!

This aura curtain is exactly the same as the layer of gray "field" released by the sword elder when he suppressed Feng Lingyue in Zangfeng Sword Zhai that day!

As for what that "realm" was, after following Jian Lao's practice, Li Ling also found an opportunity to ask Jian Lao, and the answer given by Jian Lao was the true meaning of "substantiation" and "spatialization".

That is, the embodiment of the invisible.

Later, unable to resist Li Ling's fanatical desire for knowledge, Jian Lao simply explained the concept of "domain" systematically.

The so-called "realm", as the cultivator cultivates to the Huiyang realm, he will naturally comprehend it. Because each person's exercises, spiritual veins, and specializations are different, the "realm" is also different.

For example, for a monk with a fire-type spiritual vein, most of the "domain" attributes are related to flames, and if he also specializes in the sword, then the "domain" will also carry his sword intent.

This is the case with Sword Elder's "Ember Heaven Domain", which uses flames as a framework and fills it with sword intent like a mountain toppling.

The higher the monk's cultivation and the deeper his understanding of the true meaning, the greater the scope of the realm, and the more condensed and transparent it will be.

Standing in one's own realm is equivalent to temporarily privatizing the space around one's body, and the cultivation of the domain to a high level can even affect the rules in the domain space.

This is also the reason why there is not much difference between the monks below the Tengyun Realm, but the monks in the Tengyun Realm and the Huiyang Realm are different from the clouds and mud.

Under the sun, they are all ants.

However, the appearance of the deer cutting knife tore the realm restrictions of the realm to shreds, and Li Ling was only in the Fengchu Nine Vein Realm, but he could release the domain with the help of the deer cutting knife!

Although this realm is obviously much inferior to Jian Lao's realm, this is a real realm after all!

In the gray-black field of the deer cutting knife, there was a cold and killing intent, and the smell of blood like rust surrounded the blade. The ownership of this realm does not belong to Li Ling, but is controlled by the Deer Cutter itself.

Under the shroud of this realm, Li Ling only felt that the sky suddenly darkened a little, and there were illusions in front of him from time to time, as if he was on an ancient battlefield, the remnants of the sun were like blood, and there were broken arms and stumps everywhere, and he was angry.

Fortunately, Li Ling had played several similar games in his previous life, and knew that these were just hallucinations under the influence of the deer cutting knife realm, so he was very calm.

Using a sword as a sword, the third style of "Chixiao Sword Technique" - Burning Xia!!

The deer cutting knife was already extremely sharp, and it was even more powerful with the assistance of the domain, slashing out one after another, each of which could easily cut through the rock armor on the gray rock wolf's body, leaving a deep knife wound that could be seen deep in the bones.

The gray rock wolf still had the intention of resisting at first, and wanted to use its claws to cut the deer knife, but in the next second, it was sharply cut off by the wolf's claws, and the sharp pain that came from it made it completely lose its fighting spirit, and was finally killed by Li Ling.