I Fabricated the Techniques, but my disciple really mastered them?

Clearly, this was a Xuezhi left behind by the Netherworld forces, sensing the changes at the Heavenly Cave Entrance and thus coming to investigate.

"I will go and meet him!"

Feng Yan's figure moved and he went straight up to his opponent.

Behind him, several people from the Emperor Da Yue's party had also arrived.

"Thank you, master, for resolving the great peril facing Da Yue!"

Emperor Da Yue said respectfully as he performed a ceremonial bow.

"Hmm!"

Li Xuan nodded indifferently.

The Immortal Heavenly Venerable who had come with Emperor Da Yue immediately stepped forward to join Feng Yan in encircling and attacking the Xuezhi.

"Senior, we wish to eradicate the Netherworld Nest. May we proceed?"

Emperor Da Yue asked with respect.

"Go ahead!"

Li Xuan nodded.

"Thank you, senior!"

Emperor Da Yue sighed in relief and then instructed the True King Heavenly Venerables behind him, "Go, exterminate the Netherworld fiends. Do not take any treasures from the Heavenly Cave, understand?"

"Yes, Your Majesty!"

The True King Heavenly Venerables replied respectfully.

As the True King Heavenly Venerables, led by an Immortal Heavenly Venerable, marched mightily towards the depths of the Heavenly Cave, it signified that this area of the Heavenly Cave was about to be cleared.

While Emperor Da Yue took part in the attack on the Xuezhi, wielding his spear. With Emperor Da Yue taking action, the Xuezhi could not hold out for long before being killed by a thrust of Emperor Da Yue's spear.

He respectfully presented the items carried by the Xuezhi on board the Flying Boat.

Looking at the master sitting leisurely in his chair, Emperor Da Yue speculated, "The senior must surely come from that legendary place. If that's the case, what Xuezhi Ji said is probably true, they desire to invade the Qinghua state.

"It must be because this senior has seen through the Netherworld's schemes that he appears in the Qinghua state."

Li Xuan looked over and said, "Emperor Da Yue? Tell me about this Heavenly Cave."

The Da Yue Abyss was significantly different from the Heavenly Caves that appeared in the Spiritual Realm, with soil, plants, and the essence of the Heaven and Earth Laws, giving the impression that a small world or a minor celestial realm had been carved out within this space of the Domain.

The Domain Barrier was not at the bottom of the Heavenly Cave, but rather above it, like the sky above the cave, with a faint barrier impeding passage.

Li Xuan sensed the presence of the Dao Principles within it.

"Senior, you can just call me Da Yue!"

Emperor Da Yue quickly said.

He then began to introduce this Heavenly Cave.

According to Emperor Da Yue, this Heavenly Cave was of ancient origin, existing even before he became a Martial Artist and founded the Da Yue Dynasty.

"There are legends that a cosmic catastrophe once occurred, and afterwards, the cave holes of Heaven and Earth began to appear. Initially, there were no invaders, it was only later that the invaders discovered the Heavenly Cave and hence wanted to infiltrate this Domain.

"According to the records, when the Heavenly Cave first appeared, some Martial Artists attempted to explore it and even tried to use it to peer beyond the heavens, but none succeeded.

"Only when extraterrestrial enemies invaded did we realize that the Heavenly Cave could be entered from the outside but could not be departed from within...no, that's not exactly right. It's that the living creatures of this Domain could not leave.

"The objective of the extraterrestrial invaders was to occupy this Domain, to plunder the essence of the living beings of this Domain... they created countless disasters.

"Later on, defending the Heavenly Caves became an inevitable responsibility for the Divine Realm Warriors, and over time, more and more Heavenly Caves appeared, as if the Domain was continuously developing holes.

"The entire Qinghua state, with its three largest and most ancient Heavenly Caves..."

Li Xuan listened silently as Emperor Da Yue described.

According to Emperor Da Yue, this Domain had once experienced a cosmic catastrophe, but precisely what the catastrophe was, he did not know.

The appearance of the Heavenly Cave was after the catastrophe, while the invasion of extraterrestrial enemies through the Heavenly Cave happened later.

"...It is said that the Netherworld is also a Domain, desiring to swallow the Domain we inhabit. The Heavenly Caves of the Qinghua state are all Netherworld Caves, facing the invasion of the Netherworld creatures.

"As for detailed information, we do not know, as what lies beyond the Domain, not even the Immortal Heavenly Venerables, are capable of exploring."

Emperor Da Yue said with a sigh.

While the Immortal Heavenly Venerables are mighty, as enduring as the heavens themselves, they cannot leave this Domain, nor explore beyond it. They are, ultimately, restricted.

In the end, he looked towards the senior.

"Sage, do you know of the matters beyond the heavens and earth?"

It was the same for Xu Yan and the others. Their master, who transcended the heavens and earth, surely knew better than anyone else what lay beyond, right?

Li Xuan, the ever-calm deity, replied indifferently, "As for what lies beyond the heavens and earth, you will know once your realm is sufficient. If your realm is inadequate, such knowledge is of no benefit."

A sage, of course, knows everything. The reason he does not tell you is that you are too weak; even if you knew, it would be of no use.

The Emperor Da Yue thought to himself that this was indeed characteristic of a true sage, to know the matters beyond the heavens and earth.

He then continued to talk about the Da Yue Abyss, the great battles fought by generations defending it, when the Xuezhi Ji and other Xuezhi appeared, and the disasters they created, and so on.

"Now, although the enemies from the Netherworld within the Abyss have been wiped out, it is impossible to prevent the invasion of the Netherworld. They will surely send stronger beings to try to take over this Heavenly Cave as a foothold for invading the Domain," said the Emperor Da Yue, somewhat helplessly.

"The strength that the Heavenly Cave can withstand is limited. Currently, the strongest invader that can enter is only on the level of Xuezhi Ji."

That was also the reason why Da Yue Country could hold the Heavenly Cave.

If a Blood Spirit expert came, it would be enough to crush the Qinghua state.

Upon hearing this, Li Xuan nodded. Indeed, as he had expected, the extraterrestrial invaders were ultimately limited by the Domain Barrier. Those with too much power could not enter.

And for a Netherworld powerhouse like Xuezhi Ji, to him, it was but a slap's effort and thus not a concern.

As for Blood Spirit-level experts, regardless of their power, they could not enter this Domain, so there was no point in discussing a threat.

"Emperor Da Yue, one can set up a Great Formation inside the Heavenly Cave to guard the entrance. To enter, one must break through the Formation. And with an Immortal Heavenly Venerable presiding over and seated within the Great Formation, even enemies at the level of Xuezhi Ji cannot break in," Fang Hao suggested enthusiastically after listening to the Emperor Da Yue.

"Moreover, with the Great Formation as an obstacle, once a strong enemy is detected, reinforcements can come before the Great Formation is breached, continuing to fend off the enemy outside of the Heavenly Cave."

Fang Hao could not help but speak out after listening to the Emperor Da Yue's account.

The Heavenly Cave was the perfect place to set up a Great Formation to thwart enemy invasions. Moreover, one could arrange one Formation after another to trap and annihilate the invading enemies.

Furthermore, Defensive Formations could also be set up in the city, and with them, it was possible to use the Formations to resist strong enemies despite being at a disadvantage and to buy time for strong reinforcements to arrive.

"What is a Formation?" asked the Emperor Da Yue in confusion.

After Fang Hao explained, the Emperor Da Yue's face was painted with shock. Was there truly such a profound and mysterious art?

"The Formation Path is one of the arts within the Qimen Martial Art I practice. It cannot be explained clearly in just a few words. Let me demonstrate, and then you will understand," said Fang Hao, his demeanor slightly exhilarated. He had suddenly realized that the Qimen Martial Art would once again demonstrate its divine prowess in the Divine Realm, especially in guarding the Heavenly Cave.

"Your Majesty, the enemies from the Netherworld have all been exterminated!" reported the Messaging True King at that moment.

"Good!"

The Emperor Da Yue nodded with great joy.

The speed of the Flying Boat increased sharply, and in an instant, they arrived at the core of the Heavenly Cave. What met their eyes was a sea of bloodred, and especially above, there seemed to be a layer of blood membrane covering it, with blood light pervading down.

"The enemies from the Netherworld, especially those of the Xuezhi Realm, all enter the Heavenly Cave and invade this Domain from here," the Emperor Da Yue pointed up to the place covered by a blood membrane.

Fang Hao nodded and directed, "Watch carefully as I demonstrate what a Formation is!"

With a sweeping glance, he saw that the core of the Heavenly Cave was not lacking in blood essence gold and other materials. So, he waved his hand, calling over materials one by one.

Boom!

An Artifact Refining furnace emerged, with Fang Hao refining Formation tools on the spot.

The tools refined from materials of the Divine Realm were more durable, and the Formations set up with them were stronger.

Finally, the Formation tools were ready. Fang Hao waved his hand grandly, a flurry of lights soared up, landing in all directions, with eight small banners shooting upward and settling on the layer of the blood membrane.

"Emperor Da Yue, observe carefully. What I'm setting up now is the Eight Directions Banning Locking Spirit Formation," said Fang Hao.

With a thunderous boom, the Formation activated, and a mystical light emerged. In just a flash, phoenix fire surged, and chains crisscrossed. Within moments, the invasion point of the Netherworld was completely sealed within the Formation.

The Emperor Da Yue was astounded by the mysterious power of the Formation. Although the sealing power of this Formation did not seem very strong, it was hastily set up after all.

Moreover, to be able to block for a while was enough to gain much time, enough to turn the tide of battle.

"Brother Fang, Da Yue wishes to appoint you as the State Preceptor, to help Da Yue resist the Netherworld enemies, and to aid the Qinghua state in fending off the Netherworld threat!" said the Emperor Da Yue with formal gratitude.