Xiao Hei, with Xiao Fei's permission, handed over all his personal belongings, his heart a mixture of surprise and apprehension.
Xiao Fei took Xiao Hei's items and examined them. He found only three Immortal Stones and displayed an expression of disdain.
"I'm telling you clearly, if you only bring this much Immortal Stone next time, I will dismember you alive and make you wish for death."
"Yes! Yes! I will definitely bring more Immortal Stones next time."
For the sake of his life, Xiao Hei could only tuck his tail between his legs and promise cautiously.
"How do you plan to go back?"
Xiao Fei was somewhat curious about this, wondering how they managed to travel up and down.
"This is rather complicated. The Immortal Realm and the Great Thousand Worlds below are in constant operation."
"One must accurately calculate specific times and locations, and then use some immortal means to open the passage between the two realms."
Although Xiao Hei's explanation sounded quite mysterious, it did not dampen Xiao Fei's interest.
"Copy this method in detail onto a jade slip and give it to me."
As Xiao Fei spoke, he tossed a jade slip to Xiao Hei. Xiao Hei, like a dog under a falling eaves, had no choice but to lower his head.
He could only obediently comply and record the information into the jade slip.
Xiao Fei took it and examined it with his divine sense, then again, and again!
He still didn't understand. He finally realized what it meant to read a heavenly book.
Even with his vast intellect and extensive knowledge, the complex runes in the jade slip made his eyes dizzy, and he couldn't understand a single one.
Besides the various runes, there were also many professional theories and terms that made his head ache.
"You didn't just record some random nonsense to trick me, did you?"
"I wouldn't dare. Not a single word in here is false."
"Then tell me, what does this rune mean?"
Xiao Fei picked out an incomprehensible rune at random and asked Xiao Hei to explain.
"This is a rune for stabilizing space, which can be used for the construction and stabilization of various spatial passages..."
Xiao Hei provided a detailed explanation of the rune, which involved many basic knowledge points that Xiao Fei did not understand.
At Xiao Fei's inquiry, Xiao Hei further elaborated on these basic knowledge points.
From a point, it extended to a line, then from a line to a plane, and then from this plane, a three-dimensional outline was constructed.
Xiao Hei spent a full fifteen days explaining only the content related to this single rune.
Xiao Fei closed his eyes in contemplation and reviewed the content Xiao Hei had explained in his mind, feeling that he had grasped it almost completely.
However, this was merely an insignificant knowledge point within the jade slip.
It contained a vast ocean of knowledge points that he was unaware of.
At the same time, he had to admit that this black dog, with its tail tucked, was formidable, surpassing him in both cultivation and knowledge.
A strong desire for knowledge led Xiao Fei to make a decision against his conscience.
He decided to go back on his word and detain Xiao Hei, making him his teacher.
When Xiao Hei learned of this news, he was not overly despairing.
As he explained the content to Xiao Fei and saw the other's insatiable thirst for knowledge, he had already guessed this outcome.
For him, it made no difference whether it was good or bad. Even if he were released now, his master above would surely send him down again to bring people.
This would involve more trouble and likely more beatings.
Staying here as a teacher wasn't bad; at least his life wouldn't be in danger.
Immediately, Xiao Fei performed a simple ceremony of apprenticeship to the black dog, presenting two pieces of dried meat as a formality.
After the apprenticeship was completed, Xiao Fei felt that the benefits should not be kept to himself. He promptly had Xiao Hei organize a study group.
He gathered Xiao Lan, Huang Feifei, Ji Wudi, Huangfu Xuan, Fei Xin, Fei Yu, and the Howling Moon Ancestor, all those close to him, to come and learn.
They all paid homage to this black dog as their master.
However, unlike Xiao Fei, others did not have numerous clones or the advantage of time dilation within their own spaces, so they learned much slower than Xiao Fei.
Each of them could only choose one specialized direction to study.
Because Xiao Fei learned so quickly, Xiao Hei also had to give him private tutoring, explaining more profound knowledge to Xiao Fei each month.
The content Xiao Fei was currently studying not only included what was in that jade slip but also much knowledge that could only be accessed in the Immortal Realm.
This included formations, artifact refining, cultivation, and runes.
Additionally, there was knowledge about the Immortal Realm and various Great Thousand Worlds, which Xiao Fei had never had the opportunity to encounter before.
Thinking back now, the value of this dog's life far exceeded that of killing it for meat.
As for Xiao Fei's giant followers, they did not have such good fortune.
It wasn't that Xiao Fei was biased, but teaching them even basic arithmetic was enough to make their heads spin.
The giant followers had made great contributions in the recent hunt of Earth Immortals from the Upper Realm, but they had also paid a heavy price.
Throughout the entire battle, nearly ten thousand giants had died.
For the giant race, which already had a sparse population, this was a significant reduction.
Almost every family had lost someone in this war.
After the fervor of victory subsided, the giants inevitably remembered their deceased relatives.
For these families, the grief of losing loved ones was difficult to alleviate.
If they were not properly comforted and guided, and if this situation were allowed to fester, it could gradually lead to a loss of faith in the populace.
Besides heavily rewarding the meritorious giants, Xiao Fei also established a monument, inscribing the names of the fallen to honor them.
Furthermore, for the families of these fallen soldiers, he provided grain compensation and promised continued compensation for 100 years.
This way, in addition to enjoying honor, they would also receive tangible benefits annually.
Over time, the grief would fade, but the honor and material benefits would last for a long time.
At that point, they might even be grateful for their relatives' deaths.
In addition, Fei Yu and Huang Feifei continued to propagate among the crowd, transforming the giants' grief over the loss of their loved ones into burning hatred, directed squarely at the damned demons.
Because Xiao Fei learned from Xiao Hei that the broken jade disc within his body was a remarkable artifact from the Immortal Realm.
It had long been coveted by powerful figures in the Immortal Realm.
Those who had come to seize it now were merely minor scouts.
In the future, there would undoubtedly be more powerful Immortal Realm cultivators descending to this realm to contend for the Creation Jade Tablet within him.
Although Xiao Fei usually boasted loudly, in reality, he was well aware of his own limitations.
Let alone dealing with Earth Immortal powerhouses, he couldn't even defeat a Mahayana cultivator.
Therefore, besides boasting and playing the mystic before his followers, he spent all his other time diligently learning the many things Xiao Hei taught him.
Concurrently, he relaxed the restrictions on his own cultivation. In the past few days, he had made rapid progress, reaching the late stage of Body Integration.