During this time, Ye Langtian had already come to completely understand this Tier Four Law Stone Vein, even more so than the Blood Skull Demon himself.

"Lead the way."

Xu Qing said.

"Yes."

Ye Langtian nodded respectfully.

Outside the mine.

In the giant basin, the Blood Skull Demon and his forces were locked in a deadly battle with Yanyun Zhenren. Thanks to the Blood Demon Array, the Blood Skull Demon’s side held the upper hand.

However, as Yanyun Zhenren and the others began to coordinate more closely, and with the Observatory Master of Ziyang Temple and the Abbot of Little Leiyin Temple revealing their formidable strength, the situation on the battlefield gradually shifted. The fighting grew more intense, and the two sides became evenly matched. Even with the boost from the Blood Demon Array, the Blood Skull Demon and his forces found it difficult to maintain their advantage.

"Damn it."

The Blood Skull Demon’s expression slowly darkened.

"Blood Skull Demon."

The Demon Extermination Guard shouted coldly, "Today is the day you die."

"Kill!"

SWOOSH!

Wielding a black longspear, the Demon Extermination Guard’s power surged like a rainbow piercing the sun, like a flood dragon emerging from the sea, as he charged swiftly toward the Blood Skull Demon.

BANG! BANG! BANG!

The battle between the two grew even more ferocious.

「Moments later.」

「Inside the mine.」

Within a few minutes, Ye Langtian led Xu Qing to the location of the Top-grade Law Stones within this Tier Four Law Stone Vein. However, these Top-grade Law Stones had not been mined yet and would have to be personally extracted by Ye Langtian, Xu Qing, and their people.

"Master."

Ye Langtian said in an excited tone, "The Top-grade Law Stones really are here."

"Mm."

Xu Qing nodded.

However, Xu Qing looked around and, after a moment of careful inspection, discovered that this Tier Four Law Stone Vein had only produced about 10,000 Top-grade Law Stones in total.

The quantity was quite ordinary.

"Begin mining."

Xu Qing said.

"Yes."

"As you command."

"..."

Kaya and the other seventeen servants quickly sprang into action, with Ye Langtian naturally among them. With their strength as Third Realm cultivators, mining Law Stones was a simple matter. They could circulate the Power of Law around them to resist the Law erosion released by the stones.

Of course, mining Top-grade Law Stones was relatively more difficult, and the Law erosion was more severe, but it was not enough to pose a threat to Third Realm existences.

In fact, the true value of a Law Stone Ore Vein lay in it being a renewable resource. A Law Stone Ore Vein could continuously produce Law Stones.

It wasn’t that after these 10,000 Top-grade Law Stones were mined, there would be no more. Rather, more Top-grade Law Stones would gradually be produced over a corresponding period of time.

It was a renewable resource.

This was the true value of a Law Stone Ore Vein.

Furthermore, Law Stone Ore Veins below Tier Four—that is, Tier One to Tier Three Law Stone Veins—did not produce Top-grade Law Stones. Only Tier Four Law Stone Veins could produce them.

Therefore, the value of a Tier Four Law Stone Vein was many times higher than that of a Tier Three Law Stone Vein.

「Ten minutes later.」

Xu Qing’s seventeen servants, along with Ye Langtian, had finished mining all the Top-grade Law Stones from the Tier Four Law Stone Vein.

BUZZ!

RUMBLE!

The next moment, a huge commotion erupted from the Tier Four Law Stone Vein. The Law Energy fluctuated violently, impossible to conceal, and swept through the entire ore vein.

"Not good!"

Xu Qing’s expression shifted slightly.

"This..."

Ye Langtian looked bewildered.

Clearly, this sudden change had indeed been beyond Xu Qing and his group’s expectations. They had not anticipated that mining all the Top-grade Law Stones would trigger such a drastic transformation.

"Go."

Xu Qing said in a low voice.

In truth, the reason for this sudden change in the Tier Four Law Stone Vein was precisely because Xu Qing and his people had mined all the Top-grade Law Stones.

It was because the energy had become imbalanced.

Generally speaking, mining an ore vein required starting from the Low-grade Law Stones. After the Low-grade Law Stones were exhausted, one would then mine the Middle-grade Law Stones. And after the Middle-grade Law Stones were gone, one would mine the High-grade Law Stones.

Finally, once the High-grade Law Stones were mined, one could then proceed to mine the Top-grade Law Stones.

If one were to directly mine the Top-grade Law Stones, it would cause an energy imbalance in the Law Stone Ore Vein. This would, in turn, generate a massive energy shift, and could even cause the remaining Law Stones to be destroyed by the resulting fluctuations.

However, this was a secret known only to the upper echelons, even within the Cangzhou Prefecture Mansion. Naturally, Xu Qing and Ye Langtian were unaware of it.

This was what had triggered the abrupt change moments ago.

"Not good!"

The Blood Skull Demon was aghast. With such a massive change, he had naturally detected the energy imbalance fluctuations from the Tier Four Law Stone Vein.

"This..."

"..."

Yanyun Zhenren also looked bewildered.

Clearly, they hadn’t expected someone to take advantage of their battle with the Blood Skull Demon to sneak into the mine and steal the Law Stones.

"This kind of energy imbalance must mean that all the Top-grade Law Stones were mined directly. That’s the only reason there would be such a change and fluctuation," the Demon Extermination Guard said gravely.

"Amitabha Buddha."

The Abbot of Little Leiyin Temple put his palms together. "Indeed, something unexpected has happened."

"Infinite Celestial Venerable."

The eyes of the Ziyang Temple’s Observatory Master lit up slightly.

"You’re courting death!"

BOOM! BOOM! BOOM!

At this moment, the Blood Skull Demon flew into a rage. Murderous intent surged as his Demonic Qi shot to the heavens. A terrifying blast of energy erupted, and he charged toward the mine with monstrous power.