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

The next day, early morning.

Yun Qinghe and Mu Tinglan woke up at almost the same time.

Although they slept well last night, they noticed something different about their surroundings this morning...

"Master's hand is gone?"

"Why does my chest feel so heavy...?"

The two of them turned to look at each other almost at the same time, only to find themselves looking into each other's eyes.

"Where is Master?!"

In an instant, the two of them sat up.

"Sister, what's wrong...?"

On the other side, Song Jingyu rubbed her eyes and slowly sat up.

"The master is missing."

Yun Qinghe said in a low voice.

"So the spiritual energy in the house now is all generated by the array created by the owner?"

Yun Qinghe asked in surprise.

"That's right."

Lin Heng nodded.

Yun Qinghe looked at Lin Heng with admiration, nodded slowly, and muttered, "No wonder, I feel like the purity of my spiritual root has improved a bit..."

"Oh, right!"

Hearing her say that, Lin Heng also remembered the effects of the Spirit Restoration Array.

Although the description in the Celestial Slave Manual states that it only provides spiritual energy within the coverage area.

However, after understanding the rules of the Lingying Fuling Array, Lin Heng discovered the benefits that this spiritual energy could bring.

For example, formations like the Immortal Spring, the Demon-Sealing Array, and the Spirit-Suppressing Tower Array all require spirit stones to activate their effects.

However, because they were set within the coverage area of ​​the Spirit Restoration Array by Lin Heng, they can operate autonomously through the spiritual energy they produce, even without using spirit stones.

In addition, he also discovered a characteristic in the construction rules of the Spirit Restoration Array:

The spiritual energy produced can enhance the purity of the fairies' spiritual roots.

So when Yun Qinghe asked this, Lin Heng couldn't help but ask, "What exactly is the purpose of your spiritual root purification?"

Previously, he only thought that this was the standard set by the Immortal Slave Manual for binding him with an Immortal Slave.

"Hmm... The purity of one's spiritual root, to a certain extent, determines the upper limit of the realm a cultivator can reach in the future."

At this moment, Mu Tinglan provided the answer from the side.

"However, the purity of one's spiritual root is not entirely determined by one's own talent. One can also improve the purity of one's spiritual root through cultivation that absorbs spiritual energy."

"The higher the purity of one's spiritual root, the easier it is to learn some demanding immortal techniques."

"Therefore, many major sects have basic requirements for the purity of spiritual roots when accepting disciples."

"For example, in our Yunling Sect, the most basic requirement is a spiritual root purity of 50 or above."

"As for those ancient sects, they require spiritual roots to be 100% pure!"

Ancient sects...

Subconsciously, Lin Heng glanced at Song Jingyu, who had just stretched and gotten out of bed.

Why does the heir of the Yuanhuo Sect only have 50% spiritual root purity?

As if seeing the doubt in Lin Heng's eyes, Mu Tinglan took the initiative to say, "However, after the invasion of the demonic tide, everyone's spiritual root purity has been damaged to some extent. For example, Junior Sister, her spiritual root purity used to be higher than mine, reaching over 90."

"According to the sect leader, with a spiritual root purity of over 90, junior sister will definitely be able to break through to the Nascent Soul Realm and reach the Enlightenment Realm like the sect leader. She might even... become the first Ascension Realm fairy of our Yunling Sect."

As she spoke, Mu Tinglan sighed, "It's a pity that my junior sister hadn't yet unlocked her talent when that demonic tide invaded..."

"So that's how it is."

Lin Heng nodded slowly.

Simply put, spiritual root purity is a manifestation of a cultivator's talent.

In the current Demonic Calendar, he doesn't need to understand the benefits of spiritual root purity in detail. He only needs to know that the spiritual energy generated by the Spiritual Restoration Array can improve the strength of his immortal servants.

"So, through the spiritual energy cultivation of the Spiritual Restoration Array, you can also improve the purity of your spiritual roots?" Lin Heng asked.

"Yes, absorbing spiritual energy is a way to improve the purity of one's spiritual root."

Mu Tinglan said, "However, this method has very limited effect on improving the purity of spiritual roots. It only takes about half an hour of absorption per day to reach the limit. This is also the daily training content that our Yunling Sect and other major sects arrange."

"OK."

Lin Heng immediately made a decision: "From now on, I will open this spiritual energy for half an hour every day. You can also cultivate during this time, since it requires spirit stones."

Although the Lingying Fuling Array seems powerful, even capable of automating all his array constructions.

However, the amount of spirit stones consumed is also enormous.

For example, in the short time before he came back, he consumed a full one hundred spirit stones!

Upon hearing this, Song Jingyu immediately found a chair and sat down.

"Then I'll hurry! Hmm... that way I can save you some spirit stones!"

Compared to the heartless Song Jingyu, who only has 28 loyalty points.

Yun Qinghe and Mu Tinglan did not move, but looked at the exhausted Lin Heng with concern.

Mu Tinglan said softly, "Master, are you alright...?"

"I'm just a little tired, I'll feel better after a nap."

Lin Heng waved his hand and said, "Just see me at lunchtime. I'll probably have to go to the Sand Fox family's place today."

"Does Master need to relieve fatigue?"

Upon hearing this, Mu Tinglan looked at Yun Qinghe meaningfully.

Yun Qinghe was taken aback at first, then her face turned slightly red.

The Wood Spirit Root Fairy can indeed relieve fatigue through her vibrant spiritual root, just as the Water Spirit Root Fairy can put people in a gentle and enjoyable state.

However, she had never used this method even in the Immortal Realm...

But upon hearing her senior sister mention it, Yun Qinghe pursed her thin lips and finally whispered, "Master, actually, with the natural spiritual energy here, you can relieve your fatigue without sleeping."

"If Master has something important to do at noon, I can help Master relax..."

"?"

Can a fairy servant also help relieve fatigue?

Lin Heng was stunned.

After all, the Immortal Slave Manual never mentioned such a function.

"cough."

At this moment, Mu Tinglan walked up to Song Jingyu and patted her on the forehead.

"Auntie, what are you doing?!"

Song Jingyu rubbed her head.

"...Turn your head around!"

Mu Tinglan glared at her resentfully, then helped her shift her position so that her back was to Lin Heng and Yun Qinghe.

"what?"

"What you're about to see is not suitable for a young girl like you..."