Start slaying demons from the proficiency panel.

However, it doesn't matter. There is still a comprehension point on the proficiency panel. The previous comprehension point belonged to the mysterious woman, so this comprehension point must belong to the Black Demon Ancestor.

Perhaps by learning about this powerful figure who survived two eras, one can gain even more insights.

Without hesitation, Ning Xiu chose to use it.

……

The nights in the Xuan Yin Domain are far more profound than the nights in the outer domains.

Even moonlight couldn't reach the ground, shrouding the entire area in endless darkness. The phrase "pitch black" was no joke.

Without a campfire, a person simply cannot see more than a few steps away with their own eyes.

Once a campfire is lit, it means that your location will become a beacon in the night, illuminating not only yourself but also attracting things from the depths of darkness in the distance.

"Well……"

Outside the Protectorate, a series of low humming sounds rang out, and then a group of gray-white figures were seen approaching.

Hearing the noise, the people felt a chill and, some in fear, moved closer to the nearby demon-subduing officers.

Compared to his own unarmed state, the Demon Slayer's strength undoubtedly inspired much more trust.

"Don't be afraid, everyone. We have Lord Ning with us, so there will be no danger," the Silver Tiger Demon-Subduing Captain immediately shouted.

Ning Xiu is like a lighthouse now; his name alone can bring people a great sense of security.

However, these people did not know that Ning Xiu was currently in the midst of enlightenment and would not be able to wake up for a while.

Aying, Long Ning, Chang Fenghai, and the other Demon-Subduing Guards all stood up, picked up their weapons, and by the light of the fire, they were able to see clearly the appearance of the monsters that were closing in.

They were all people, but their bodies were much paler and thinner, their eyes were cloudy white, and their mouths were open with drool dripping from them, making them look like... zombies.

"Woo!" Smelling the scent of living people, the zombies could no longer restrain themselves and charged forward with howls, launching an attack on the people.

The demon-slaying officers shielded the civilians behind them while they engaged in a fierce battle with the zombies.

Since the arrival of the Xuan Yin Domain, Chang Fenghai has lost contact with the Fox Demon Village and the Python Sect Cave. He can no longer summon immortals to possess him. Without this ability, his strength is no different from that of an ordinary person.

Long Ning and A Ying, as the strongest members of the Demon-Subduing Squad, rushed out without hesitation and fought against a large number of zombies.

Each time the two women made a move, seven or eight zombies would be crushed.

Long Ning is a dragon, and with the blessing of her cheap father's dragon pearl, she can now unleash a force of tens of thousands of pounds with every move, which is even more ruthless than weapons. The zombie's body simply cannot withstand it.

A-Ying's ability to control qi is even more extraordinary. With a flick of her hand, it's like sword qi, capable of severing the heads of zombies from a great distance, or even cutting their bodies in two.

Its execution was swift and decisive, without any unnecessary delays. Compared to Long Ning's simple and brutal attack style, which resulted in countless casualties, it appeared more elegant and graceful.

What's truly disheartening is that the sheer number of zombies is seemingly endless. Kill one batch, and another will emerge from the darkness, a vast and overwhelming force, as numerous as the sea.

Even if Long Ning, A Ying, and the other Demon-Subduing Guards killed as many as they could quickly, they couldn't solve the fundamental problem. In fact, as time went on, the Demon-Subduing Guards began to show signs of weakness.

This made the people's hearts clench. If the Demon-Subduing Commander fell, what would happen to them? Would they all perish in the mouths of those zombies?

Thinking of this, all the people couldn't help but tremble, and some could no longer stand.

If it weren't for the darkness nearby, a coward might have already run away.

“There are too many. Logically speaking, it’s impossible for so many undead to gather in one place. I suspect that a sentient leader has emerged among them. If we don’t behead this guy, we’ll just be worn down to death here.” A-Ying said to the Demon-Subduing Guards around her after killing another undead.

“But with so many undead creatures rushing out to find the leader, it’s practically suicide,” someone said, frowning and looking distressed.

The outside world is so dark, which greatly hinders human movement and makes an already dangerous situation even more dangerous.

“I’ll go,” Long Ning volunteered.

After glancing at her, Aying nodded: "Alright, we don't need too many people for this, two will suffice. The rest of you stay here to resist the invasion of the undead. We don't know what's going on with Lord Ning, he hasn't reacted at all. Everyone, please be careful to protect Lord Ning's safety and don't let the undead affect him."

“Of course, Miss Aying.”

Chang Fenghai clenched his fists in frustration. If he could still rely on the power of the two immortals, Hu Taigu, he could be going out to help with Long Ning and A Ying right now, instead of being like a cripple who needs the protection of other demon-subduing officers.

It was only then that Chang Fenghai realized that true power must be possessed by oneself, rather than relying on the power of others to strengthen oneself.

What belongs to others will always belong to them; only what you possess truly belongs to you.

Chang Fenghai glanced at Ning Xiu, who was sitting cross-legged with his eyes closed, and made up his mind that once this crisis was over, he would definitely ask Ning Xiu for advice and seek the power that truly belonged to him.

After exchanging instructions with several Silver Tiger Demon-Subduing Guards, A Ying and Long Ning fought their way out of the ruins of the Anti-Protectorate and soon disappeared from everyone's sight.

This journey is likely to end badly.

The Xuan Yin Domain is already extremely dangerous, but at night, the danger level increases tenfold or more. Even a first-grade expert cannot guarantee that they will return alive.

"Miss Aying, Miss Long Ning, you must live!" Chen Peifeng shouted as he beheaded an immortal being, wielding an iron knife.

[186] A special kind of immortality

After leaving the ruins of the Protectorate, Long Ning and A Ying discovered that the situation outside was far more complicated than they had imagined.

The vast tide of undead beings stretched as far as the eye could see, and its number was probably already over ten thousand.

Even though they had followed Ning Xiu all the way and encountered countless immortal beings, this was the first time they had experienced so much.

"Sister Aying, how are we going to find the leader of that immortal being? It's too difficult." Long Ning frowned. If this dragged on, she would have to transform into a dragon to last longer.

But that's not a long-term solution. There are tens of thousands of immortal creatures, and their numbers might even increase. If the battle drags on, they'll eventually wear her down.

"I have a method I can try." A-Ying's expression was firm, and her hands suddenly emitted a fluorescent light. Without wind, they moved slowly into the sky, transforming into a cross-shaped burst that illuminated the area.

All the immortal beings looked up, staring blankly at the cross-shaped starlight.

At this moment, it was as if stars had descended to earth, and the sky was filled with aurora. Aying held a cross in her hand and scanned the earth with her eyes. With the help of the light, Long Ning quickly protected Aying and stood beside her, although she did not know what her method was.

But in the current situation, having a solution is better than having none.

"Roar!"

A beastly roar came from somewhere, and all the undead creatures seemed to suddenly understand, piling on top of each other, one on top of the other's shoulders, the other on top of the other's heads.

In no time, a tall tower suddenly appeared on the spot, and it quickly climbed towards A-Ying, intending to drag her down.

How could Long Ning possibly let such a thing happen? Instantly, she transformed into a dragon, and the enormous dragon charged out, its horns smashing down the tall 'tower' that had been built.

“That thing must be nearby. Without its command, these undead creatures certainly couldn’t have done such a thing.” Long Ning looked around and spat out a stream of dragon flame.

It was over ten zhang long, and the burning immortal creatures sizzled as they turned into black charcoal.

“We heard its voice, but we still can’t pinpoint its exact location.” A-Ying’s expression was serious. Because she was at a high vantage point, she could see more than Long Ning could.

Further away, countless undead creatures crawled out of the earth and rushed from afar, joining the undead tide in a mighty torrent.

Judging from the current situation, it seems that in less than the time it takes for an incense stick to burn, the price of these tens of thousands of immortal items will skyrocket to three or four times their original value, which would be a catastrophic disaster for the people in the Protectorate.

We must find the leader of all things as soon as possible, otherwise the tide of undead creatures in this place will only increase, which will be detrimental to everyone.

"If only Lord Ning could make a move, no matter how many of these immortal beings there are, they wouldn't be able to withstand a single strike from him. But Lord Ning is doing something else entirely, and hasn't reacted at all yet." Long Ning couldn't help but sigh.

Since important figures can't be relied upon, we can only rely on ourselves.

"Roar!"

The roar that had just summoned the tide of undead creatures rang out again, and all the undead creatures sprang into action, rushing towards Long Ning in a suicidal manner.

At the same time, a dim green light burst forth, like a halo, striking every undead creature.

The undead creatures that came into contact with the green light underwent visible changes instantly. Their nails grew longer, sharp teeth grew out of their mouths, and short, steel-spiky hairs even grew all over their bodies.

One immortal being is weak, but thousands upon thousands of immortal beings create a completely different kind of spectacle.

It was like a tidal wave, it was terrifying!

Due to a moment of carelessness, Long Ning was knocked to the ground by a large number of undead creatures, who then began to frantically devour her body.

Even with her incredibly tough body, Long Ning couldn't withstand the bites of these mutated undead creatures. Before long, she was covered in blood from all the bites.

A-Ying's gaze grew even more serious. The leader of the undead creatures hiding in the shadows was clearly more dangerous than she had imagined, and even possessed the ability to cause the undead to mutate.

The mutated undead are clearly much stronger than ordinary undead.

If the original immortal being was around the first rank, now it has been directly upgraded to the sixth rank, which is a qualitative transformation.

"Kill!" After being bitten, Long Ning's ferocity as a demon surged into her heart. She swung her dragon tail, swatting away a large number of undead creatures. Then, she lashed out with her four claws. Even sixth-grade undead creatures died instantly under Long Ning's claws.

With one gulp, a burst of dragon flame, which had been accumulating for a long time, erupted out. This time, the force was extremely fierce, sweeping over two hundred feet. From the sky, a cone-shaped scorch mark appeared on the ground.

Within the scorch mark, all immortal beings were reduced to nothingness.

"Huh?" Just then, A-Ying's eyes suddenly lit up.

Because in the area that Long Ning had cleared out, a green light suddenly flashed by, but it quickly disappeared without a trace.

"Long Ning, attack your left side!" A Ying shouted immediately after realizing what was happening.

Upon hearing this, Long Ning, though unaware of the reason, had no doubt about A Ying's decision. She forcefully spat out the remaining air, clearing another area.

This time, the green light was a little too slow to dodge and was caught red-handed by A-Ying, who was floating high in the sky.

She stared intently and saw that it was an immortal creature the size of a two- or three-year-old baby. Its head was large, but its body and limbs were short. It leaped quickly across the ground like a toad, and its speed was not slow at all.

Upon approaching an undead creature, the large head leaped up and landed on its back, its limbs plunging into the creature's back.

The two things look like parasites.

"I see." A-Ying suddenly realized why it was so difficult to find the target. It turned out that the target was too small and its position kept changing as the undead moved.

The thought that this large-headed immortal creature possessed the abilities of summoning, dispatching, and strengthening simultaneously sent a chill down A-Ying's spine.

Perhaps individually, its strength is not as great as that of ordinary undead, but in terms of true threat, a million ordinary undead cannot compare to this one big leader.

This thing must die, otherwise it will surely become a disaster once it grows up!

In an instant, A-Ying swiftly flung the cross-shaped star in her hand.

At that moment, it was as if stars were descending to earth, a meteor streaking across the sky, the entire earth was illuminated in a fluorescent green light, and then it exploded with a deafening roar.

The cross-shaped formation shattered into countless fragments, sweeping across every corner of the area without leaving any gaps. The density was so great that even a fly couldn't escape.

Long Ning was greatly shocked by the sight. She herself felt that if she were in that area, she would not be able to escape alive from the power unleashed by the cross star.

A-Ying's strength far exceeded her comprehension.

The undead creatures, which had been behaving very violently and moving in unison, suddenly lost their original coordination and began to act aimlessly. The abnormalities on the bodies of the mutated undead creatures also gradually disappeared, and they returned to their original appearance.