After the destruction of the Immortal Realm, I took in the fallen fairy.

The moment Lin Heng saw that fairy, the Celestial Slave Manual opened before his eyes:

[Immortal Slave Cultivation Manual: The other party's spiritual root purity is 50%, meeting the requirements for Immortal Slave cultivation.]

A spiritual root purity of 50% or higher is a binding condition in the Immortal Slave Manual.

As it turned out, this fairy from an ancient sect just barely passed the test.

To say I wasn't disappointed would be a lie.

Although he doesn't know what benefits a high purity of spiritual root will bring, to some extent, it also reveals the opponent's strength before their spiritual energy was depleted.

For example, Yun Qinghe and Mu Tinglan, one has a spiritual root purity of 70% and the other has 79%.

Therefore, when Lin Heng bound them to become his immortal slaves, he could see that Mu Tinglan's strength was at the Nascent Soul stage, while Yun Qinghe was still at the Nascent Soul stage.

That 50% purity of spiritual roots...

Surely it can't be that we've only just reached the Foundation Establishment stage?

"Fairy Song, please... let me get up first. Do you remember what I told you a few days ago?"

At this moment, Cao He, lying on the ground, hurriedly called out to the red-haired fairy.

"A few days ago?"

The red-haired fairy slowly moved her bare feet away.

Despite her slender figure, she managed to lift Cao He off the ground with just one hand after bending down slightly!

"Master, be careful."

Instantly, Mu Tinglan and Yun Qinghe stood protectively in front of Lin Heng.

Something seems off.

Lin Heng seemed to realize something as well.

"Um."

Mu Tinglan said in a deep voice, "There is spiritual energy within her."

A fairy with spiritual power...

Lin Heng's feeling just now was correct.

After all, there's a spirit-restoring array on half of the bed where he sleeps every day, capable of producing spirit stones.

Moreover, his slums are now filled with arrays that use the spiritual energy from spirit stones as their driving force.

Therefore, he was no less familiar with the aura of spiritual energy than the fairies.

But now it's already the Magic Calendar.

If it weren't for the use of a formation like the Fairy Spring, how could a fairy possess spiritual energy on her own?

Although he had heard the demon merchant mention before that some fairies who fell into the human world would bring with them some immortal techniques and secret methods containing spiritual energy.

But judging from the red-haired fairy's reaction just now, she clearly didn't carry any magical techniques with her and was always on guard.

"A few days ago you said that because of that new slave master, I might have to stay in this cave for the rest of my life, from birth to death..."

The red-haired fairy nodded gently, her lively expression gradually turning somber.

Although she may be the only fairy in the world whose spiritual roots have not withered, she has never seen the fairy realm.

Because she has been here ever since she opened her eyes, and it has been exactly nineteen years now.

In other words, when she was born, the Immortal Era, which was known as the golden age of cultivation, had already ended, and the Demon Era had begun.

She didn't know about her own background, and she had only seen her mother in her dreams.

She still remembers her first dream since she could remember, in which her mother told her about the fate of fairies who had been reduced to celestial slaves in the mortal world.

As a result, the red-haired fairy had nightmares for several days, dreaming that she too had become a fairy slave at the mercy of others...

Then one day, she dreamed of her mother again.

In her dream, her mother gave her the token that the sect had protected for generations, and told her that this token could protect her spiritual roots from the invasion of the demonic tide and could protect her at any time.

The true owner of this keepsake was her sister, whom she had never met.

Subsequently, her mother placed a special magic seal on the fairy tattoo on her in a dream.

That was a binding seal to prevent her from running away during her mischievous childhood.

The seal will only automatically unlock when her sister takes the token, ensuring that she can stay by her sister's side...

After a dream.

When the red-haired fairy awoke from her dream, she found the keepsake her mother had given her in the dream beside her, as well as a special magical mark on her forehead.

But she was already trapped in the cave, so how could she go find someone?

Perhaps the only good thing is that the keepsake can transform into a demon to keep her company and pass the time...

at last.

When she was eight years old, she heard a noise coming from the cave.

It was Cao He, who was just a miner back then, who dug this place because of a wealthy businessman's job.

But as soon as Cao He dug in, he saw the token that had transformed into a demon, which terrified him.

So the red-haired fairy captured him and made a deal with him.

She shared some of the valuable spiritual herbs from her cave with Cao He, and asked him to bring different fairies to her cave every month.

She used this method to find her sister's whereabouts.

But now, eleven years have passed, and she has not heard a single word about her sister.

Cao He has now amassed a fortune by relying on those priceless spiritual herbs and has become the city lord of Linxian City...

"Where is that person?"

Raising her head, the red-haired fairy questioned Cao He.

A few days ago, Cao He told her that an extremely difficult slave owner had come to Linxian City and had bought almost all the fairies in Linxian City.

Even if a new celestial servant arrives in Linxian City, the demon merchants will give him priority in being introduced to them.

For the red-haired fairy who was eager to find her sister, Lin Heng's appearance completely disrupted her plans!

The red-haired fairy glared angrily at Cao He: "Didn't you say you would bring me that person who goes around buying fairy slaves?!"

"Fairy Song, I came here with some people."

After saying that, Cao He turned to the side.

The red-haired fairy also saw Lin Heng and the other two who had just come down the steps.

"So it was you who bought up almost all the fairies in Linxian City?"

The red-haired fairy bared her teeth, her youthful eyes fixed on Lin Heng, "I'm going to kill you!"

boom!

Instantly, the red-haired fairy emitted intense spiritual energy fluctuations, and sparks of fire emanated from her body.

At the same time, Yun Qinghe made an accurate judgment: "Master, she is a fire spirit root fairy, and her strength... should not be at the Nascent Soul stage yet, but only at the mid or late stage of the Spirit Realm."

Mu Tinglan, who had been somewhat wary just moments before, smiled gently at Lin Heng after seeing the red-haired fairy display her strength: "However, Master, she doesn't seem very friendly right now."

"So you guys are all set, right?" Lin Heng asked.

Mu Tinglan nodded and said, "Even if the Immortal Spring only restored some of its strength, if my junior sister and I go together..."

"We don't even need Gathering Yuan Grass."

Yun Qinghe confidently raised her chin.

"Then you guys play with her, but don't bully the little girl too much."

After all, she was the third fairy to fulfill the requirements of the Fairy Slave Manual, so keeping her around might be useful in the future.

So, facing the fireworks bursting around the red-haired fairy, Lin Heng actually sat down on the steps.

He even thought that the spiritual herbs he had prepared in advance were completely unnecessary; how much better it would be if he could exchange them for a bag of melon seeds at this moment…

Looking at the leisurely Lin Heng, Cao He and the red-haired fairy were both stunned for a moment.

Doesn't this guy realize that the plan he brought him here was to use this red-haired fairy to attack him?

The red-haired fairy pouted angrily, "Hey! You who bought the fairy slave! Didn't you hear me calling you? I'm planning to kill you!!!"