The second-level evolution potion flowed down along the Obsidian's raised head. The moment the potion touched the Obsidian, it began to take effect, and a sliding blue light began to glow on the surface of the Obsidian's carapace.

The stream of light rose from the abdomen and continued to gather in circles towards the location of the beast core in the head of the Obsidian Worm. The head of the Obsidian Worm showed a painful look, but Zhang Mu was powerless to do anything. This was the evolution of the Obsidian Worm itself. Others could not and dared not interfere. They could only watch the development of the situation quietly.

Zhang Mu in the later generations did not have his own mutant beasts, and when other people's mutant beasts evolved, they usually chose a quiet place where no one knew about it to complete the advancement process quietly. Because when the mutant beasts were advancing, they were at their most vulnerable moment. Not only were they unable to resist the enemy, but they were also likely to stop advancing because of a little disturbance from the outside world.

Well, in this case, if it is a minor case, the mutant beast will just lose an opportunity to advance to a higher level. But in serious cases, it is very likely that the energy will go out of control and destroy the beast core in its brain. Once the beast core is destroyed, the mutant beast will completely disappear from this world.

Although Zhang Mu looked nonchalant, he had already asked Wang Liang to inform his men that no one was allowed to approach the courtyard and disturb him before Zhang Mu came out.

This was just the minimum. How could Zhang Mu leave his safety entirely in the hands of others? He had already made a second-hand preparation. He secretly released the blood vine lotus and let it dive into the ground. At this moment, the huge vine network had firmly surrounded the entire yard where he was.

Because he had never had the opportunity to closely observe the mutant beast's advancement process, Zhang Mu was not sure. After all, he had no experience at all, and the only basic knowledge he had was just from hearsay.

But at this moment, Zhang Mu felt uneasy.

Zhang Mu's sixth sense was always very accurate. As expected, after just one second, the mental connection between him and the Obsidian Worm became unstable. He could sense the Obsidian Worm's occasional pain.

Is Obsidian in a difficult situation now?

Zhang Mu continued to focus his gaze on the body of the Obsidian Worm. He was surprised to discover a detail that he had just overlooked. Although the Obsidian Worm's abdomen was constantly sending energy to its brain due to the presence of the second-level evolution potion, the Obsidian Worm's uneasiness was becoming more and more serious.

The key point is that for some unknown reason, Zhang Mu has no idea where to start, which makes the matter more complicated.

Seeing the body of the black worm constantly

Trembling, an inexplicable fear rose in the wolfhound's eyes. It bared its teeth and growled continuously in the direction of the obsidian worm. Yuan Rui wanted to step forward to help the obsidian worm and use her ability to relieve its pain, but was stopped by Zhang Mu.

Under Yuan Rui's puzzled gaze, Zhang Mu explained seriously, "Xiao Hei is not injured now. His condition cannot be solved by injecting life force into him, because there are too many uncertainties in this kind of evolution. Any energy that does not match the attributes of Xiao Hei's body may destroy the balance in his body.

Xiao Hei's attribute is not a life attribute, so even if the life energy is used for healing, it is very likely to disrupt its advancement process, resulting in failure of advancement, or even in serious cases, Xiao Hei may die."

Hearing Zhang Mu's words, Yuan Rui hurriedly put away her hands and covered her mouth with a look of disbelief. Has Xiao Hei's condition become so critical?

Zhang Mu also regretted his arrogance. There were too many things he didn't know. He thought the mutant beast's advancement wouldn't be so complicated, but he didn't expect it to be so complicated.

Just when Zhang Mu was having a headache, the frequency of the Black Obsidian Worm's body trembling had increased, and it looked like it was about to collapse.

Suddenly, Zhang Mu heard the intermittent voice of the Obsidian Worm in his heart, "Give me the beast core...wind..."

After that, there was no more sound from the obsidian worm, as if it had completely cut off contact with Zhang Mu.

Hearing the call of the obsidian worm, Zhang Mu suddenly shuddered.

That's right, it's the beast core of the same attribute! This is what Xiao Hei needs now!

The amount of the second-level evolution potion is absolutely sufficient, so it has been continuously attacking the beast core in the Obsidian Worm's brain. However, the proportion of beast cores of other attributes that the Obsidian Worm had taken before was too large, resulting in the purity of its own beast core refining not reaching an advanced indicator, so it can't bear it now.

These thoughts flashed through Zhang Mu's mind for only a moment, and he immediately took out the bag containing the beast core that he had previously hidden in the ring of the Jiyuan merchant.

Fortunately, Zhang Mu had the habit of classification before, which was a habit he developed in later life. After all, it would be too troublesome to distinguish the types of beast cores when the transaction started.

He instantly picked out one of the small bags that he had marked with the wind attribute, and without blinking, he wanted to pour it into the mouth of the obsidian worm.

However, because of the excessive pain just now, the obsidian worm had already closed its mouth tightly, and now the obsidian worm is trying its best to resist the second stage attack.

With the flushing of chemical agents, how could one have the energy to control his body?

Although Zhang Mu's strength had increased to twice that of an adult, it was still nothing compared to the bite force of the obsidian worm. He used great efforts to pry open a tiny gap in the obsidian worm's mouth and forcefully flicked a smallest wind-attributed beast core into it.

Sure enough, when the beast core was just thrown into the belly of the obsidian worm, it reacted. Its body, which was trembling so hard that it was about to collapse, absorbed energy of the same attribute, which helped it share a lot of the impact from the potion. It instantly felt a little relieved.

Zhang Mu was also anxious, and took the opportunity to shout at the Obsidian Worm's head, "Idiot, open your mouth, why are you biting so tightly? I can't open it."

With the help of this foreign beast core, the obsidian worm seemed to have heard Zhang Mu's voice and regained some control over its body. Its big mouth, which had been tightly closed just now, lifted up a little, and a small hole appeared in an instant, but it soon couldn't hold on and wanted to let it go. It seemed that the energy of the beast core would soon be exhausted.

Seeing this, Zhang Mu didn't dare to delay any longer. If he was a step slower, this idiot might close his mouth again. Zhang Mu quickly poured all the wind-attributed beast cores in his bag into the small opening. A lot of them overflowed, which Zhang Mu picked up quickly. He didn't even have time to wipe the dirt off them before stuffing them back in.

After all the animal cores were put into the mouth of the obsidian worm, Zhang Mu lifted it up with force, and all the animal cores gurgled into the belly of the obsidian worm.

They were neutralizing the energy of the second-level evolution potion in the abdomen of the Obsidian Worm. In this way, the impact on the Obsidian Worm's own beast core became smaller and smaller, and then it simply absorbed this gentle energy.

When the frequency of the blue light on the obsidian worm gradually softened, Zhang Mu was delighted, knowing that things were almost done, and suddenly felt a little excited.

roar!

The sudden roar shocked Zhang Muyuanrui and the other person who were standing beside the Black Obsidian Worm, the instigator, and they were frozen in place.

Just when Zhang Mu wanted to curse, the black worm kept spitting out black silk threads from its mouth, and Zhang Mu was so scared that he quickly pulled Yuan Rui away.

In just ten seconds, a huge black cocoon appeared in the center of Zhang Mu's courtyard, and black silk threads exuded a mysterious aura lingering around the entire cocoon.

Zhang Mu swallowed in astonishment, unable to maintain his usual calmness. "It can even spin cocoons. I'm beginning to wonder if its biological father is the Obsidian Worm, the old silkworm next door?"

(End of this chapter)