Ling Yun's sword undoubtedly caused extremely serious trauma to him.
The terrifying demonic power surged out from him like a volcano erupting.
Boom! Ling Yun was blown away by the impact of this demonic force on the spot.
"puff."
Ling Yun was directly hit hard.
But he couldn't care less about his injuries.
At this critical moment, it is undoubtedly more important to kill the old black bull demon.
"Guiyi Assassination Technique!"
He turned into a sword light again and shot at the Black Bull Demon, not giving the Black Bull Demon any chance to breathe.
After all, the Black Bull Old Demon is a Heavenly Soul-level existence.
It really gave the Black Niu old demon a chance to breathe. Ling Yun couldn't guarantee whether the opponent would have any terrifying trump cards.
Poof! This sword, without any suspense, once again penetrated the body of the Black Bull Demon.
Most of the black bull old demon's internal organs were shattered by Ling Yun's sword.
Ling Yun retreated violently to prevent the black bull old demon from self-destructing, and pulled him to die together.
But the Black Bull Demon didn't do that.
Because there was a dense sound of breaking wind coming from all around the battlefield.
Thousands of monsters came from all directions.
Apparently they sensed the fluctuations in the battle here.
When they saw the scene in front of them, all the monsters' eyes were blood red, they roared with grief and anger, and looked at Ling Yun with eyes filled with hatred.
Seeing that these monsters were about to attack Ling Yun, the old black bull monster's deep voice sounded: "Stop it all."
A group of monsters roared unwillingly.
The golden monkey transformed from the Gang Stone also flew in front of the old black bull demon, with a look of grief on its face.
Seeing the golden monkey, the old black bull demon's eyes showed a soft light.
He reached out and stroked the golden monkey's head to calm the latter's emotions.
Then, the old black bull demon looked at Ling Yun: "Humans, your human race has a saying, 'The winner is the king and the loser is the bandit.' I lost today.
Then next, you need to make a choice.
I can admit defeat and not make any resistance, but you must promise not to harm any monsters in the Lost Mountain, and at the same time, you must take good care of Tiangang.
If you refuse, we will have no choice but to die and I will blow myself up on the spot."
As an old demon who has lived for thousands of years, the Black Bull Demon is extremely rational and will not be carried away by anger.
Now he is certain to die.
Under such circumstances, it would be obviously irrational to anger Ling Yun again.
In this case, Ling Yun will only transfer his anger to other monsters.
With Ling Yun's strength, it would be easy to massacre the entire Mizong Mountain.
This is not what the Black Bull Demon wants to see.
He had indeed thought about blowing himself up on the spot to die with Ling Yun.
But after seeing other monsters, he resisted this impulse.
In his eyes, Ling Yun, a human being, is unfathomable.
If he self-destructs, he may not really be able to kill Ling Yun, but none of the monsters around him will be able to survive.
In addition, although he uses the Tiangang Stone to practice, after spending many years together, he really treats the Tiangang Stone as his children and grandchildren.
He is already on the verge of death, so he must find a way out for Tiangang Stone.
It is impossible not to hate Ling Yun and the old demon Black Niu.
But at the same time, he must admit that Ling Yun is a very suitable person to be used as a backer.
With Xuanxu's cultivation, Ling Yun was able to kill a true soul-level being like him. No matter what method he used, it proved Ling Yun's strength and potential.
When such a person grows up, he will definitely become a powerful person in the future.
It would be better and more promising to let Tiangang Shi follow Ling Yun than to follow him.
"It's called Tiangang?"
Ling Yun sighed.
"Not bad, Shi Tiangang."
The old black bull demon nodded, then stared at Ling Yun closely, "Human, how do you choose me?"
"I promise you."
Ling Yun said.
For him, what Black Niu Lao Yao said was undoubtedly the best ending. It could even be said to be an unexpected surprise.
"good."
The old black bull demon smiled.
Then he looked at Shi Tiangang and said: "Tiangang, from now on, you will follow him."
Hearing this, Shi Tiangang roared loudly, obviously disagreeing with the Black Niu Old Demon's words.
In Shi Tiangang's eyes, the old demon Black Niu is like his master.
Ling Yun killed the old demon Black Niu, and that was his master-killing enemy. How could he follow Ling Yun?
The old black bull demon's face was serious: "Tiangang, this is my will. If you still regard me as your master, then obey my will, otherwise I will die in peace."
Shi Tiangang had tears in his eyes and could only kneel on the ground: "Yes."
Seeing this, the old black bull demon showed a relaxed expression.
Then he sighed.
Without Ling Yun taking action, he would activate the Ling Gang on his own and break his own heart veins.
"Tiangang, Lao Niu, I died by myself, not by this young master, so you don't have to hate him."
The old black bull demon was extremely considerate.
He was worried that if Ling Yun killed him personally, it would leave an indelible knot in Shi Tiangang's heart, which would be detrimental to Shi Tiangang's future development.
After saying these words, the old black bull demon died of anger.
Wave after wave of powerful life energy surged out from the Black Bull Old Demon's body and merged into Ling Yun's body.
The life energy of the true soul level old demon is not unpowerful.
But this life energy can no longer improve Ling Yun.
Therefore, Ling Yun made a prompt decision. Ling Yun himself did not absorb the life energy he devoured, but transferred it to the demon elixir of the Storm Siren.
After this battle with the Black Bull Old Demon, Ling Yun used the Guiyi Assassination Technique more than ten times in a row, and most of the Storm Sea Demon's demon elixir energy had been consumed.
But the greatest value of the Storm Sea Monster Demon Pill is not the life energy contained inside it, but the life energy it can store.
Not all monster elixirs can do this.
It can be said that this is the characteristic of the Storm Sea Demon Demon Pill.
The demon elixirs of other demon beasts will be scrapped directly once their energy is exhausted.
As long as the demon elixir of the Storm Siren has an extremely unique structure, it has an independent energy space inside and can be used repeatedly.
Ling Yun immediately stored all the life energy of the Black Bull Demon in the demon elixir of the Storm Sea Demon.
The Storm Sea Demon Demon Pill, which had already consumed most of its energy, was suddenly filled with energy again.
Ling Yun estimated that the energy inside was enough for him to perform the Guiyi Assassination Technique twelve times.
Even if he uses the Demon Purgatory Technique, he can do it once.
It can also be seen that the side effects of these two exercises are very different.
Judging from the compensated life energy, the side effects of the Demon Purgatory Technique are ten times that of the Guiyi Assassination Technique.
Therefore, when Ling Yun could not use the Heavenly Demon Purgatory Kung Fu, he tried his best not to use it.
Then, Ling Yun looked at Shi Tiangang.
Although this Shi Tiangang has some spiritual intelligence, his intelligence is actually not very high. It is only slightly higher than ordinary monsters, and is about the same as a three-year-old child.
"let's go."
Ling Yun walked outside.
With Old Demon Black Niu's instructions on his deathbed, Shi Tiangang did not resist.
It knelt on the ground and kowtowed to the old black bull demon three times before getting up and following Ling Yun away.
Once outside, Ling Yun immediately heard countless sad howls coming from the underground world.
Apparently it was those monsters that were grieving for the death of the old black bull monster.