As for Yu Yunyi and Lv Ruoxi, they didn’t have any time to speak. The two continuously infused mana into the "Blood Demon Seal," casting one Blood Sword after another!

Besides blood sacrifice, there was no other way to quickly refine the "Blood Demon Seal."

Facing Zhao Yibai’s oppression, Li Yunjing and his group could no longer stand in place to defend. Li Yunjing used the "Myriad Poison Banner" to release streams of poisonous gas, his figure taking Yu Yunyi, Lv Ruoxi, and Fu Chao with him as they flew away or plunged underground, swiftly using the "Earth Escape Technique" to evade Zhao Yibai’s pursuit.

Whenever Li Yunjing and the others were about to be caught, they immediately threw out a lethal weapon, using the explosions of various Forbidden Artifacts to stall Zhao Yibai for just a breath.

In that moment’s breath, Li Yunjing and his group could momentarily widen the distance and fly toward the surface!

As for whether there were any more powerful Demon Artifacts hidden in the ruins, Li Yunjing and his group had no energy to search. The four could only be chased around, fleeing everywhere.

"Rumble!"

In their flight, Li Yunjing struck mercilessly, continuously bombarding the cave walls and ceiling, causing massive collapses, aiming to bury the entire underground world completely!

"Damn it! These detestable brats!"

Upon seeing this, Zhao Yibai was furious. He knew that Li Yunjing and the others had just discovered two Treasure Artifacts upon entering, and who knew how many valuable items were still hidden here.

If the entire underground city was buried, even if he attacked, unearthing it would take time, wasting an unknown amount of time.

It should be known that "Beiwang City" had already experienced a massive earthquake. With such a great commotion, the surrounding forces wouldn’t ignore it.

Consequently, it would inevitably attract cultivators to investigate.

Once those cultivators arrived, Zhao Yibai wouldn’t be able to remain hidden!

This was certainly not the result he wanted!

Faced with this situation, Zhao Yibai had no choice but to temporarily slow down his pursuit of Li Yunjing and the others, instead using half of his energy to continuously obliterate falling boulders with his immense mana.

In the end, he had no other option. With the entire underground city collapsing, Zhao Yibai could only utilize his full mana to freeze the entire underground world using "Cold Ice True Qi."

The dense white cold air spread rapidly underground, and in just a moment, the entire underground city became a frozen world.

"Damn it! This bastard is really powerful!"

After Li Yunjing and the others escaped from the underground world, Fu Chao turned back to look and couldn’t help but curse.

Yu Yunyi released the "Cyan Cloud Ship" first, and the four jumped onto the flying ship, continuing to flee southward.

When the "Cyan Cloud Ship" flew a hundred miles away, Li Yunjing and the others could clearly feel the intense cold air rapidly approaching from behind.

The flying speed of the "Cyan Cloud Ship" was certainly not faster than Zhao Yibai!

"Hand over the ’Myriad Poison Banner’ and ’Blood Demon Seal’, and I’ll spare your lives."

At this moment, Zhao Yibai was chasing them with all his might, simultaneously using words to crumble Li Yunjing and the others’ determination.

"Playing that trick with me? That’s old hat from the times of our ancestors!"

Upon hearing this, Li Yunjing and his group didn’t slow down but instead fled even faster.

Li Yunjing and the others carried plentiful resources, able to continually supply energy to the "Cyan Cloud Ship," keeping it in full operation mode with speed comparable to Golden Core Realm cultivators!

The "Cyan Cloud Ship" could fly freely in the void, constantly changing direction and altitude in circles, infuriating Zhao Yibai, who chased but couldn’t catch up.

Every time they got close, a threatening force would erupt from the "Cyan Cloud Ship," launching an attack on Zhao Yibai!

If he didn’t avoid it, he would certainly end up with a disheveled appearance or suffer injuries!

Zhao Yibai planned to flee from the Great Ming Dynasty in the future. Injuries while entering the demonic cultivators’ territory could be extremely dangerous.

Normally, Zhao Yibai wouldn’t want to risk injuries from pursuing Li Yunjing and his group, as it wouldn’t result in anything favorable for him.

"No choice! Either we kill them, or we return to the underground world to search for Demon Artifacts! What to do?"

Zhao Yibai fell into deep thought. If the "Cyan Cloud Ship" kept fleeing, they would eventually encounter cultivators. When the news spread and someone pursued the Shenxiao Dao Sect disciples, he would be in deep trouble.

But before Zhao Yibai could make a decision, a great force once again erupted from the "Cyan Cloud Ship."

"Boom!"

A gigantic lightning bolt shot out from the "Cyan Cloud Ship," striking Zhao Yibai.

This bolt almost used up all of Li Yunjing’s energy, even disintegrating a piece of his "Celestial Thunder Stone," releasing tremendous force.

Demonic cultivators were naturally restrained by Pure Yang Thunder Skill, and since Zhao Yibai began practicing Demonic Dao, he inherently feared Thunder Skill, forcing him to dodge to the side.

"Rumble!"

Following Li Yunjing’s strike, Yu Yunyi, Lv Ruoxi, and Fu Chao similarly activated Thunder Power towards the "Celestial Thunder Cannon." The "Celestial Thunder Cannon" was nearly ruptured, releasing twelve bolts of lightning!

Twelve bolts of Thunder Power reverberated between heaven and earth. Zhao Yibai had no choice but to halt his movements, evading repeatedly, not daring to be hit directly.

"Speed up!"

At this moment, the "Cyan Cloud Ship" couldn’t fire anymore. If it continued to fire, the "Celestial Thunder Cannon" would explode, and Li Yunjing’s group’s stored Thunder Power had already dissipated, rendering them powerless.

"Go!"

Quickly increasing their distance by more than a hundred miles, seeing Zhao Yibai still in pursuit, Li Yunjing had no choice but to throw out the "Blood Demon Seal" refined by Yu Yunyi and Lv Ruoxi.

The "Blood Demon Seal," an extremely hard Demon Artifact resembling Vajra, made the void ripple upon impact.

"Bang!"

Zhao Yibai’s treasure flashed, deflecting the "Blood Demon Seal," but its interior was filled with Evil Qi. Just one collision enveloped Zhao Yibai in Evil Qi, sending chills through his body and nearly causing him to lose control.

His Primordial Spirit was completely shrouded in Evil Qi, almost losing consciousness.

With his body out of control, Zhao Yibai paused again in mid-air, forcibly suppressing the Evil Qi with his cultivation.

"Great opportunity!"

As the "Blood Demon Seal" was summoned back, Li Yunjing and his group attempted to flee at full speed.

After three breaths, Zhao Yibai subdued the Evil Qi in his body and returned to normal. He was nearly driven mad.

"Little beasts! I swear not to be human if I don’t kill you!"

As Zhao Yibai fiercely pursued, two figures appeared in the distant sky, heading straight for the North Emperor Sect.

Without enemies chasing him, Shan Baiyi flew at impressive speed, quickly arriving within ten thousand miles of the North Emperor Sect. Shan Baiyi was truly meticulous, immediately informing the sect elders.

Three hundred years ago, Shan Baiyi was a master at Foundation Establishment Realm Seventh Heaven. Such cultivation practically matched the status of a Shenxiao Dao Sect’s top ten true disciple.

Such a person naturally had close relationships with the sect elders.

The sudden news from the vanished Shan Baiyi shocked the North Emperor Sect’s significant figures, especially regarding the four Shenxiao Dao Sect true disciples being pursued.

As the northern hegemon of the Great Ming Dynasty, loyal allies of the Shenxiao Dao Sect, the North Emperor Sect’s important figures wouldn’t stand idly by while Shenxiao Dao Sect’s true disciples were hunted by a Golden Core Realm cultivator.

The elderly and young Daoist nun had come to aid Li Yunjing’s group, led by a Golden Core Realm Elder.

The elder Daoist nun, with crane-like white hair and childlike skin, had a hunched frame seemingly vulnerable to being knocked over by a gust of wind. Yet, her eyes were extremely sharp, resembling blades.